Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Hourly","department":"O&M - Operations and Maintenance","location":"Remote","team":"O&M - Operations and Maintenance","allLocations":["Remote"]},"createdAt":1788984886741,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nWe are seeking a highly reliable and detail-oriented Operations Support Specialist to monitor system alerts, respond promptly to issues, and execute defined troubleshooting actions based on established flowcharts. This position requires strong problem-solving skills, comfort with technical systems, and the ability to work independently during afternoon and weekend shifts.
\nA key aspect of this role is flexibility — you may support coverage needs by filling open shifts, assisting with vacation or absence coverage, and adapting to changing operational demands.
\nShift Schedule
This role follows a 4×10 schedule (four 10-hour shifts per week):
Block B: Wednesday – Saturday from 10:30 AM – 9:00 PM PST/PDT
Learn and understand novel electro-mechanical hardware systems and operations
\nMonitor system alerts and notifications during assigned shifts
\nFollow established troubleshooting protocols to address issues
\nExecute problem-solving actions based on provided flowcharts
\nRestart hardware systems or escalate issues to senior engineering staff as needed
\nMaintain detailed logs of alerts and actions taken
\nEnsure all issues are resolved within the allotted time or escalated appropriately
\nProvide weekend and flexible shift coverage, including filling in for team absences or vacations as needed
\nA Bachelor's degree in a related field is preferred
\nPrevious experience in operations, dispatch, or customer support roles
\nBasic technical aptitude; prior experience with dashboards or similar systems is a plus
\nFamiliarity with troubleshooting hardware and software systems and technology
\nAbility to follow detailed instructions and processes
\nStrong problem-solving skills with a focus on execution
\nAttention to detail and the ability to work independently
\nExcellent communication skills
\nAbility to manage multiple tasks and prioritize in a fast-paced environment
\nWillingness to provide flexible shift coverage, supporting team members during vacations or absences
\nThis position is remote. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nPartner with department leaders to build the annual plan. This includes establishing targets and collaborating with leaders to gather and document inputs to the financial plan
\nPrepare monthly, quarterly, and annual financial reports for department leaders, highlighting key performance indicators
\nConduct variance analysis to explain deviations from budget and forecast, identifying potential issues and areas for improvement
\nBuild and maintain financial models that support business decisions, scenario analysis, and management reporting
\nDrive comparative analysis of Mainspring Energy with peer public companies
\nSupport the Controller’s organization as needed; including close, variance explanations, and data analysis
\nParticipate in the long-term financial planning process representing R&D and G&A department needs
\nContinuously improve FP&A processes, systems, and analytical capabilities to support the company as it scales
\nSupport special projects, business cases, and ad-hoc analyses as needed
\nBachelor’s degree in Finance, Economics or related area; MBA, CFA, or CPA a plus
\n5+ years of relevant experience in a corporate finance or FP&A role, preferably in a company manufacturing a complex product or in the energy industry
\nProven experience in budgeting, forecasting, and financial planning
\nStrong analytical skills with proficiency in financial modeling and data analysis
\nExcellent communication and presentation skills to convey complex financial information to non-financial stakeholders
\nDeep understanding of financial accounting principles and business operations
\nAdvanced proficiency in Microsoft Excel and financial software applications
\nHighly motivated team player driven to achieve exceptional results
\nMainspring Energy is seeking an experienced and highly organized Corporate Paralegal to join our growing Legal team. This individual will play a key role in supporting Mainspring’s corporate governance, securities and financing activities, legal operations, and other strategic corporate matters as the company continues to scale.
\nThis is a broad, hands-on role for someone who enjoys taking ownership, building efficient processes, and working across a wide range of legal and business matters. The Corporate Paralegal will work closely with the General Counsel and other members of the Legal team and will regularly partner with Finance,HR and other teams across the company.
\nCorporate Governance: Support Board of Directors and committee processes, including preparing and organizing meeting materials, maintaining minutes and resolutions, managing approvals and consents, and maintaining corporate governance records
\nCorporate Records & Entity Management: Maintain corporate books and records and manage subsidiary and entity matters, including formations, qualifications, annual filings, registered agents, and other corporate maintenance requirements
\nSecurities & Financing Support: Assist with equity financings, debt transactions, secondary transactions, equity administration, and other corporate transactions, including signature processes, closing documentation, diligence, and maintenance of transaction records
\nEquity & Cap Table Support: Partner with Legal, Finance, and People on equity-related matters, including equity grants, exercises, stockholder records, capitalization information, and related documentation
\nLegal Operations: Help develop and maintain scalable Legal team processes, templates, trackers, policies, document-management practices, and other systems that improve efficiency and visibility
\nContract & Document Management: Support execution and organization of significant agreements and other legal documents, maintain accurate legal records, and help ensure key obligations and deadlines are tracked
\nDiligence & Strategic Transactions: Coordinate legal diligence and data-room processes for financings, commercial transactions, M&A, and other strategic initiatives
\nCross-Functional Support: Work closely with Finance, People, Executive Operations, and other teams to gather information, coordinate approvals, and keep complex projects moving
\nOutside Counsel Coordination: Help manage workflows with outside counsel and other external service providers, including coordinating documents, information requests, signatures, invoice management, and filings
\nTake on other projects and responsibilities as the Legal team and company continue to grow
\n4+ years of corporate paralegal experience at a law firm and/or in-house legal department, preferably supporting venture-backed, technology, manufacturing, energy, or other high-growth companies
\nStrong experience with corporate governance, board and committee processes, corporate records, and entity management
\nExperience supporting corporate transactions such as venture financings, debt financings, M&A, secondary transactions, or similar matters
\nExcellent organizational and project-management skills, with the ability to manage multiple priorities and deadlines without losing attention to detail
\nStrong written and verbal communication skills and the judgment to work effectively with attorneys, executives, directors, employees, and outside advisors
\nAbility to handle sensitive and confidential information with discretion
\nA practical, proactive approach to solving problems and a willingness to take ownership of both significant projects and the details required to get them done
\nExperience supporting a late-stage private or public company
\nFamiliarity with equity administration and capitalization platforms
\nExperience with legal technology, contract lifecycle management, board-management, or entity-management systems
\nExperience developing or improving legal processes rather than simply administering existing ones
\nThis role is well suited for someone who is comfortable operating with a high degree of autonomy, enjoys creating order around complex processes, and wants to be an integral part of a small, collaborative Legal team supporting a rapidly scaling company.
\nThis position is remote. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Supply Chain","location":"Menlo Park, CA","team":"Supply Chain","allLocations":["Menlo Park, CA"]},"createdAt":1788376579104,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nWe are seeking a motivated and detail-oriented Cost Engineer to join our SC PM & Cost Engineering team. This position provides an excellent opportunity to gain hands-on experience in supply chain cost analysis and optimization strategies, should-cost modeling, and capacity reporting inside a fast-moving hardware environment. You will work closely with the experienced team members to support BOM cost roll-ups, cost-down tracking, and capacity planning, while building the analytical and cross-functional skills to grow into more senior cost engineering ownership over time.
\nCost Analysis & Should-Cost Support
\n\nAssist in conducting cost analysis across the supply chain — procurement, manufacturing, transportation, and distribution — in support of BOM cost roll-up and forecasting activities
\nHelp build and maintain should-cost and cost models to evaluate the impact of different scenarios on overall BOM cost, working under the guidance of the Cost Engineering Program Manager
\nResearch and track market trends for key cost drivers (raw material prices, labor costs, logistics rates) and summarize findings to support forecasting and cost planning
\n\n
Capacity Planning & Reporting Support
\n\nSupport the team’s capacity management process by helping compile and maintain supply and production capacity data across commodities
\nHelp develop and maintain a cost/capacity tracking database or dashboard (e.g., Smartsheet, Quickbase, Tableau, Power BI, or equivalent) to support cost reduction and capacity visibility efforts
\nPrepare clear, data-driven reports and visuals to communicate cost and capacity metrics and project progress to stakeholders
\n\n
Cross-Functional Support & Project Execution
\n\nCollaborate with cross-functional teams — procurement, engineering, commodity management, and finance — to collect and validate cost and capacity data
\nSupport the tracking of cost-savings initiatives, providing status updates and reporting to the team as needed
\nAssist in maintaining project tracking so cost and capacity data stays current and accurate
\nSupport supplier engagement efforts to understand cost structures, identify cost-saving opportunities, and maintain pricing transparency
\nParticipate in ad-hoc projects and process-improvement initiatives as assigned
\nBachelor’s degree in Engineering, Supply Chain Management, or a related field
\n1–3 years of relevant experience (full-time experience in cost analysis, supply chain, or a related analytical role)
\nStrong analytical skills with proficiency in spreadsheet-based data analysis (Excel, Google Sheets); comfort working with BOM or cost data
\nExcellent written and verbal communication skills, with the ability to work effectively across teams
\nDetail-oriented with strong organizational skills and the ability to manage multiple tasks simultaneously
\nEagerness to learn, take feedback well, and take on new challenges in a fast-paced, evolving environment
\nFamiliarity with ERP systems or supply chain planning software
\nExposure to PLM systems (e.g., Enovia or equivalent) or willingness to learn one
\nFoundational understanding of supply chain principles — logistics, procurement, and inventory management
\nPrior internship or project experience in cost analysis, data analysis, capacity planning, or supply chain
\nExperience with dashboard or database tools (e.g., Tableau, Power BI, Smartsheet, Quickbase) is a plus
\nExperience using AI-powered tools (e.g., Claude or similar large language model platforms) to speed up analysis or reporting is a plus
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"O&M/Commercial","location":"Menlo Park, CA","team":"O&M/Commercial","allLocations":["Menlo Park, CA"]},"createdAt":1774300259141,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nMainspring Energy is scaling deployment of its Linear Generator—a new category of flexible, low-emissions onsite power designed to support a net-zero grid.\nAs deployments expand, we are seeking a Director of Customer Success to own the customer experience following system commissioning (post-COD). This role sits at the intersection of customer, product, and operations, ensuring that systems perform successfully in the field and that customers remain confident as we scale.\nThis is a hands-on leadership role requiring close collaboration with Engineering, Product, Field Service, and Commercial teams.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy is scaling deployment of its Linear Generator—a new category of flexible, low-emissions onsite power designed to support a net-zero grid.
\nAs deployments expand, we are seeking a Director of Customer Success to own the customer experience following system commissioning (post-COD). This role sits at the intersection of customer, product, and operations, ensuring that systems perform successfully in the field and that customers remain confident as we scale.
\nThis is a hands-on leadership role requiring close collaboration with Engineering, Product, Field Service, and Commercial teams.
\nThis position is Hybrid. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is Hybrid. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Director of Customer Success","country":"US","workplaceType":"hybrid","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy is scaling deployment of its Linear Generator—a new category of flexible, low-emissions onsite power designed to support a net-zero grid.
\nAs deployments expand, we are seeking a Director of Customer Success to own the customer experience following system commissioning (post-COD). This role sits at the intersection of customer, product, and operations, ensuring that systems perform successfully in the field and that customers remain confident as we scale.
\nThis is a hands-on leadership role requiring close collaboration with Engineering, Product, Field Service, and Commercial teams.
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Mechanical Engr","location":"Menlo Park, CA","team":"Mechanical Engr","allLocations":["Menlo Park, CA"]},"createdAt":1771960507211,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nDirector of Mechanical Engineering\nThis is not a pure people-management role. We are looking for a hands-on mechanical engineering leader who has built real hardware, moved fast in imperfect environments, and developed the judgment to recognize technical risk before it becomes a field or manufacturing problem. You should be comfortable leading managers and senior engineers, but also capable of diving into a design review, asking the question that changes the direction of a project, and helping the team make a high-quality decision under uncertainty.\nThe ideal candidate has experience in a startup or high-growth hardware environment where process was incomplete, ownership was still being defined, and the product had to mature while the company was scaling. You may have helped take a product from early development into production, or you may have led major subsystems through repeated design, test, manufacturing, reliability, and field-learning cycles. You know that process matters, but you also know how to build just enough process to improve execution without slowing down creative engineering.\nReporting to the VP of Mechanical Engineering, you will lead multiple subsystem-focused teams, develop managers and technical leaders, raise the technical bar, and help the organization scale from heroic execution toward disciplined, repeatable product development.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThis is not a pure people-management role. We are looking for a hands-on mechanical engineering leader who has built real hardware, moved fast in imperfect environments, and developed the judgment to recognize technical risk before it becomes a field or manufacturing problem. You should be comfortable leading managers and senior engineers, but also capable of diving into a design review, asking the question that changes the direction of a project, and helping the team make a high-quality decision under uncertainty.
\nThe ideal candidate has experience in a startup or high-growth hardware environment where process was incomplete, ownership was still being defined, and the product had to mature while the company was scaling. You may have helped take a product from early development into production, or you may have led major subsystems through repeated design, test, manufacturing, reliability, and field-learning cycles. You know that process matters, but you also know how to build just enough process to improve execution without slowing down creative engineering.
\nReporting to the VP of Mechanical Engineering, you will lead multiple subsystem-focused teams, develop managers and technical leaders, raise the technical bar, and help the organization scale from heroic execution toward disciplined, repeatable product development.
","id":"5008d562-e306-4c3d-8728-5622d1aa6002","lists":[{"text":"Core Responsibilities","content":"\nLead multiple mechanical engineering teams responsible for delivering high-quality subsystem designs from concept through manufacturing. Own a significant portion of the mechanical engineering project portfolio. Develop and lead managers/technical leads in the execution of these projects.
\nBe accountable for technical oversight, roadmap planning, engineering process discipline, and team development across your scope. Serve as a key escalation point for technical issues, project risk, and cross-team dependencies; remove blockers and ensure rapid, high-quality decisions.
\nStrengthen day-to-day engineering execution systems (e.g., project tracking hygiene, communication discipline, timely review/approval flows) so teams can scale without losing rigor.
\nPartner closely with Supply Chain, Supplier Quality, and Manufacturing teams to support sourcing decisions, supplier technical engagement, and fast resolution of technical issues in manufacturing.
\nPartner closely with Field, O&M, Test and Reliability teams to support issue triage, structured problem solving, and prevention of recurrence.
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Director of Mechanical Engineering","country":"US","workplaceType":"onsite","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThis is not a pure people-management role. We are looking for a hands-on mechanical engineering leader who has built real hardware, moved fast in imperfect environments, and developed the judgment to recognize technical risk before it becomes a field or manufacturing problem. You should be comfortable leading managers and senior engineers, but also capable of diving into a design review, asking the question that changes the direction of a project, and helping the team make a high-quality decision under uncertainty.
\nThe ideal candidate has experience in a startup or high-growth hardware environment where process was incomplete, ownership was still being defined, and the product had to mature while the company was scaling. You may have helped take a product from early development into production, or you may have led major subsystems through repeated design, test, manufacturing, reliability, and field-learning cycles. You know that process matters, but you also know how to build just enough process to improve execution without slowing down creative engineering.
\nReporting to the VP of Mechanical Engineering, you will lead multiple subsystem-focused teams, develop managers and technical leaders, raise the technical bar, and help the organization scale from heroic execution toward disciplined, repeatable product development.
","descriptionBodyPlain":"Director of Mechanical Engineering\nThis is not a pure people-management role. We are looking for a hands-on mechanical engineering leader who has built real hardware, moved fast in imperfect environments, and developed the judgment to recognize technical risk before it becomes a field or manufacturing problem. You should be comfortable leading managers and senior engineers, but also capable of diving into a design review, asking the question that changes the direction of a project, and helping the team make a high-quality decision under uncertainty.\nThe ideal candidate has experience in a startup or high-growth hardware environment where process was incomplete, ownership was still being defined, and the product had to mature while the company was scaling. You may have helped take a product from early development into production, or you may have led major subsystems through repeated design, test, manufacturing, reliability, and field-learning cycles. You know that process matters, but you also know how to build just enough process to improve execution without slowing down creative engineering.\nReporting to the VP of Mechanical Engineering, you will lead multiple subsystem-focused teams, develop managers and technical leaders, raise the technical bar, and help the organization scale from heroic execution toward disciplined, repeatable product development.\n","hostedUrl":"https://jobs.lever.co/mainspringenergy/5008d562-e306-4c3d-8728-5622d1aa6002","applyUrl":"https://jobs.lever.co/mainspringenergy/5008d562-e306-4c3d-8728-5622d1aa6002/apply"},{"additionalPlain":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.\n","additional":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Business Development Sales","location":"Remote","team":"Business Development Sales","allLocations":["Remote"]},"createdAt":1788390748355,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking a high-energy, commercially driven Director of Origination to lead our commercial strategy and transaction execution across Municipalities, Electric Cooperatives, and IOUs.
\nThis is an executive-level, outward-facing origination role for a natural networker and dealmaker. You will be responsible for bringing an established \"rolodex\" of utility and public power relationships, pitching Mainspring’s value proposition, opening doors at the executive level, and driving high-value, complex transactions from initial handshake to financial close.
\nIf you thrive on the road, love hosting counterparties, excel at translating market tailwinds into executed contracts, and bring deep transaction experience in the power sector, this role is built for you.
\nDrive Commercial Growth: Lead the sourcing, structuring, negotiation, and closure of high-value commercial arrangements—including equipment sales, long-term service agreements (LTSAs), capacity contracts, and project partnerships—with Public Power counterparties (Munis, Co-Ops, IOUs)
\nLeverage & Expand Your Network: Serve as the primary face of Mainspring in the Public Power sector. Mobilize your existing relationships with utility executives, procurement leads, board members, and energy traders to rapidly originate new pipeline opportunities
\nBe the Ultimate Brand Ambassador & Entertainer: Represent Mainspring at industry conferences, regional association meetings (APPA, NRECA, EEI, regional ISO meetings), dinner tables, and customer sites. Comfortable commanding a room, hosting key decision-makers, and building authentic, long-term trust
\nCapitalize on Demand Drivers: Position Mainspring's Linear Generator as the primary solution for urgent utility needs, including data center interconnection delays, load growth, generation retirement replacement, and firm capacity requirements
\nLead Complex Negotiations: Structure and negotiate term sheets, MOUs, equipment purchase agreements, and customized commercial structures alongside internal legal, regulatory, product, and finance teams
\nNavigate Utility Procurement: Lead responses to competitive solicitations (RFPs), integrated resource planning (IRP) engagements, and bilateral partnership pursuits
\nShape Product Strategy: Feed real-time market intelligence, customer pain points, and utility requirements back to Mainspring’s product, engineering, and executive leadership teams to influence product roadmaps
\nMinimum Qualifications:
\n\nExperience: 16 years of total experience in the North American power or clean energy sectors, with at least 8 years of direct transaction experience in an outward-facing origination or commercial role with direct access to counterparties
\nTrack Record: Proven history of originating, negotiating, and closing complex, high-value energy transactions (equipment sales, PPAs, BTAs, capacity contracts, or large infrastructure agreements) with Munis, Cooperatives, and/or IOUs
\nPublic Power Expertise: Deep working knowledge of Public Power procurement processes, G&T (Generation & Transmission) co-op structures, board governance, RTO/ISO market rules, and utility financial models
\nTravel Flexibility: Willingness and ability to travel up to 50%, including client dinners, conference circuits, site visits, and last-minute travel to close deals
\nBehavioral & Relationship Attributes:
\n\nOutgoing & Executive Presence: Highly charismatic, extroverted, and confident navigating everything from boardrooms to informal dinners. Exceptional ability to build instant rapport with senior utility leaders
\nDeal Closer & Networker: Self-starter who brings an active, portable network (\"rolodex\") of utility, co-op, and municipal decision-makers and counterparties
\nCommercial Instincts & Acumen: Deep understanding of power economics, capacity markets, spark spreads, tax credits (IRA/OBBBA), project finance (NPV, IRR), and grid interconnection mechanics
\nCross-Functional Leader: Ability to orchestrate internal technical, regulatory, and finance experts to solve complex customer challenges cleanly and quickly
\nPreferred Qualifications:
\n\nBachelor’s Degree in Business, Engineering, Economics, or related field (MBA or advanced degree preferred)
\nDeep existing network across specific regional wholesale markets (e.g., PJM, ISO-NE, NYISO, MISO, ERCOT, SPP, SERC, or WECC)
\nThis is a remote role with a 100% target bonus. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Legal","location":"Menlo Park, CA","team":"Legal","allLocations":["Menlo Park, CA"]},"createdAt":1785967447361,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy is seeking an experienced legal or regulatory professional to lead the Company's strategy on environmental, energy, and regulatory matters. Reporting to the General Counsel, this individual will drive regulatory strategy, policy engagement, and compliance initiatives affecting the Company's operations, grid integration, and growth objectives. A J.D. and experience practicing or advising on energy, utility, or environmental law are strongly preferred. The role partners closely with Engineering, Manufacturing, Supply Chain, Commercial, Project Development, Finance, and Government Affairs to proactively manage legal and regulatory risk, market access, and support strategic scaling.
\nDevelop and lead the Company's regulatory legal strategy to support further commercialization, manufacturing expansion, project deployment, and market growth, while proactively identifying and mitigating regulatory risks and influencing emerging policy developments
\nAdvise the Company on state and federal environmental laws and regulatory compliance applicable to manufacturing operations, including U.S. EPA regulations, air quality, hazardous materials, waste, and related permitting requirements
\nProvide legal support for air permitting and environmental approvals for manufacturing facilities and customer deployments
\nLead legal strategy relating to product regulatory requirements, certifications, emissions standards, and evolving regulatory frameworks (e.g., NERC)
\nAdvise on utility regulation, interconnection requirements, tariffs, and energy market rules affecting distributed generation projects
\nSupport project development and siting by identifying regulatory risks and permitting requirements
\nMonitor and interpret federal, state, and local legislation, regulations, and policy developments affecting distributed energy resources and advise business leaders on legal implications
\nServe as the legal lead on Foreign Entity of Concern (FEOC), domestic content, and other supply chain regulatory requirements
\nCoordinate with Government Affairs on legislative and regulatory advocacy and engagement with agencies, policymakers, and industry organizations
\nManage outside counsel and consultants as needed
\nJ.D. preferred with an active membership in at least one U.S. state bar
\nDirector: 15+ / Senior Director: 20+ years of legal experience, including significant experience advising on environmental, energy, utility, or regulatory law
\nStrong knowledge of environmental permitting, energy regulation, and administrative law
\nFamiliarity with the Inflation Reduction Act, including ITC, FEOC, and domestic content requirements
\nExperience advising technology, manufacturing, infrastructure, or energy companies preferred
\nExcellent judgment, business acumen, and ability to work cross-functionally in a fast-paced environment
\nThis position is remote. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Product Testing","location":"Menlo Park, CA","team":"Product Testing","allLocations":["Menlo Park, CA"]},"createdAt":1786576338587,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy is growing rapidly and has begun to manufacture its Linear Generators in volume, and reliability is a crucial element to the success of the product. We're looking for a reliability engineering leader to build and run the function that evaluates design risk and quantifies and reduces it to acceptable levels for our target markets.In this role, you'll own the reliability strategy and roadmap, build and develop a team of reliability engineers, and act as the senior voice for reliability across Product Engineering, R&D, and Manufacturing.
\nDirectly lead the team who is responsible for everything related to reliability testing including mechanical stress tests, shock, vibration and environmental testing.
\nContinue to build, lead, and grow a team of reliability engineers, setting hiring plans, org structure and career development paths as the team scales with production volume.
\nOwn the reliability roadmap and testing strategy across the product lifecycle, from design risk assessment through field performance, balancing rigor against Mainspring's fast product cadence.
\nClosely partner with the rest of the test engineering team to define and track reliability testing performed on linear generators.
\nDefine and track reliability metrics and goals (e.g., MTBF, values at risk, warranty/field return trends) and report program health and risk posture to senior engineering and business leadership.
\nEstablish and continuously improve reliability processes and standards — FMEA, HALT, root-cause methodology, CAPA — as scalable, repeatable systems rather than one-off engineering exercises.
\nServe as the senior reliability partner to Product Engineering, R&D, and Manufacturing leadership, influencing design decisions and trade-offs at the architecture and program level.
\nLead cross-functional FMEA efforts for design, process, and maintenance, ensuring the right stakeholders are engaged and risk decisions are made and documented.
\nRepresent reliability in design reviews, program gate reviews, and executive updates, translating technical risk into business-relevant terms.
\nGuide cross-functional teams on compliance-relevant design decisions (UL, NFPA, IEC) for electrical and fuel system components, ensuring reliability considerations are built in early rather than tested later.
\nMaintain enough technical depth to review and challenge test plans, failure analyses, and root-cause investigations led by the team — this is a technically credible leader, not a pure people-manager.
\nEnsure the team's verification test plans are grounded in system/sub-system specs and industry-standard protocols.
\nChampion investment in test infrastructure, automation, and data analysis capability to keep pace with rapid cycles of learning.
\nBachelor of Science in Electrical Engineering, Mechanical Engineering, or related field.
\n10+ years of experience in reliability, test, or quality engineering for mechanical, electrical, or electromechanical systems, including 3+ years in a formal people-management role (not just projects).
\nDemonstrated experience building or significantly scaling a reliability, quality, or test engineering team in a hardware/manufacturing environment.
\nDeep, hands-on background in FMEA, HALT, root-cause analysis, and CAPA processes (RCA, 8D), with the credibility to coach others and set standards.
\nTrack record of influencing design and engineering decisions at the cross-functional/leadership level.
\nStrong communication skills, with experience presenting reliability risk and program status to senior/executive stakeholders.
\nComfortable operating in a fast-paced, evolving environment where systems, processes, and team structure are still being built.
\nExperience in hardware or energy/industrial equipment manufacturing, ideally at a company scaling from low-volume to high-volume production.
\nUnderstanding of electrical system concepts, HV/LV electronics reliability, and failure characterization techniques (X-ray, CT, cross-sectioning, optical microscopy).
\nExperience with compliance testing and standards (UL, IEC, NFPA).
\nFamiliarity with data analysis and reliability statistics tooling (Python, MATLAB, Weibull++, JMP) sufficient to guide and review team output.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Electrical Engr","location":"Menlo Park, CA","team":"Electrical Engineering","allLocations":["Menlo Park, CA"]},"createdAt":1775860915128,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. You will join a talented team responsible for our electrical system architecture. Your primary focus will be the integration and performance of high-power conversion hardware as it interfaces with both the Linear Generator and the customer’s grid. \n \nWe have a highly impactful opportunity for an electrical engineer to be part of the team that is responsible for the Linear Generator’s power delivery and integration into customers’ power systems. This role focuses on system-level architecture and validation rather than ground-up power converter or PCB design. This is a deeply hands-on position; you will be the technical authority in the lab, personally putting grid-interactive inverters through rigorous characterization and stability testing to ensure they meet our high standards before they ever reach a customer site. Your ownership extends through the entire product lifecycle from fine-tuning firmware parameters in a controlled environment to monitoring fleet performance and leading root-cause analysis for complex system-integration challenges in the field.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Electrical Engineer - Inverter & Grid Integration","country":"US","workplaceType":"onsite","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Electrical Engr","location":"Menlo Park, CA","team":"Electrical Engineering","allLocations":["Menlo Park, CA"]},"createdAt":1785169489325,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a talented team of electrical engineers that own hardware design from initial concept through test and manufacturing.\n\nWe have a high impact opportunity for a power electronics engineer to shape the future of the Linear Generator’s power electronics systems.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a talented team of electrical engineers that own hardware design from initial concept through test and manufacturing.
We have a high impact opportunity for a power electronics engineer to shape the future of the Linear Generator’s power electronics systems.
This role is an amazing growth opportunity, where you will work closely with and learn from a small team of top-caliber power electronics engineers. Working together, you will jointly own all the custom power electronics within our system.
\nThis is a hybrid position (onsite + remote) at our Menlo Park HQ. It will require you to be onsite as required to perform testing, troubleshooting, manufacturing support, etc. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This role is an amazing growth opportunity, where you will work closely with and learn from a small team of top-caliber power electronics engineers. Working together, you will jointly own all the custom power electronics within our system.\nThis is a hybrid position (onsite + remote) at our Menlo Park HQ. It will require you to be onsite as required to perform testing, troubleshooting, manufacturing support, etc. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Electrical Engineer - Power Electronics","country":"US","workplaceType":"hybrid","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a talented team of electrical engineers that own hardware design from initial concept through test and manufacturing.
We have a high impact opportunity for a power electronics engineer to shape the future of the Linear Generator’s power electronics systems.
Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Electrical Engr","location":"Menlo Park, CA","team":"Electrical Engineering","allLocations":["Menlo Park, CA"]},"createdAt":1789584460557,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nLow-Voltage Hardware Design: Design low-voltage (< 60V) electrical systems and PCBAs that enable core functions and expand the capability of the Linear Generator
\nBring-Up & Validation: Own the full bring-up, validation, and qualification of your custom electrical hardware designs
\nTechnical Reviews: Lead cross-functional design reviews to present concepts, align requirements, and secure approvals
\nComplex Diagnostics: Debug and troubleshoot complex hardware issues that arise across field deployments, test labs, and the production floor
\nDesign for Reliability: Partner closely with reliability engineers to analyze hardware performance and continuously increase system robustness
\nManufacturing Collaboration: Work directly with our New Product Introduction (NPI) team and external suppliers to optimize designs for manufacturability (DFM) and testability (DFT)
\nCross-Domain Integration: Interface with high-voltage hardware teams and define requirements for cabling and embedded firmware support
\nTeam Growth: Learn complex design concepts and mentor peers while collaborating with a world-class engineering team
\n2+ years of experience with a Bachelor's degree, or 1+ years of experience with a Master's degree, in Electrical Engineering or a related field
\nProven hands-on experience designing, troubleshooting, and realizing low-voltage electrical hardware (e.g., DC/DC converters, relays, e-fuses, and MOSFETs)
\nProficiency with PCBA schematic capture and PCB design tools (Altium strongly preferred)
\nStrong fundamentals in analog/mixed-signal design, including operational amplifiers, ADCs, and hardware filtering (anti-aliasing, bandpass, etc.)
\nExperience performing component derating analysis, worst-case tolerance stack-ups, and Design Failure Mode and Effects Analysis (DFMEA)
\nDemonstrated ability to drive projects forward from initial requirements through production
\nA \"collaborate-first\" mindset with strong communication skills across diverse technical teams and personalities
\nExperience in the full hardware development life cycle of PCBA’s and electrical assemblies, from requirements development to manufacturing support
\nFamiliarity with hardware reliability and environmental validation testing (e.g., HALT, thermal chamber testing, Hipot, vibration)
\nExperience working in a startup or rapid product development environment
\nFamiliarity with project management and documentation tools (e.g., Jira, Confluence)
\nBasic programming or scripting experience (Python, C, or C++) specifically for automating lab bench tests or debugging hardware
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Hourly","department":"Product Testing","location":"Menlo Park, CA","team":"Product Testing","allLocations":["Menlo Park, CA"]},"createdAt":1788457866470,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\n \nThe R&D Electrical Technician will be someone with a solid baseline of experience in electrical fabrication, assembly, and troubleshooting. They will have had experience in an R&D environment beyond just circuit board work. They will be experienced in working on high voltage and large electrical equipment and will have a demonstrated knowledge of electrical safety. We are searching for a well-organized, reliable technician to join our growing team.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThe Electrical R&D Technician will be someone with a solid baseline of experience in electrical fabrication, assembly, and troubleshooting. They will have had experience in an R&D environment beyond just circuit board work. They will be experienced in working on high voltage and large electrical equipment and will have a demonstrated knowledge of electrical safety. We are searching for a well-organized, reliable technician to join our growing team.
"},{"text":"Responsibilities","content":"\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Hourly","department":"Upgrades","location":"Menlo Park, CA","team":"Upgrades","allLocations":["Menlo Park, CA"]},"createdAt":1790786792198,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nCollaborate with various teams including Failure Analysis, Inventory management, and Supply Chain across a wide variety of issues/corrective actions that are identified in production, field service, testing & inspection
\nFollow established procedures for the assembly, installation, testing, and troubleshooting of production components
\nExecute timely corrective action to mitigate and contain quality issues while the production line is active, minimizing downtime
\nInterpret drawings and work instructions to perform duties
\nFollow all safety procedures and wear the appropriate PPE
\nPreferred three to five years electrical technician experience
\nDemonstrated hands on ability to visually detect electrical defects/non-conformances of materials, determine solutions, and repair them in a fast-paced environment
\nExperience using hand tools like drivers, torque wrenches and wire crimpers
\nDemonstrated technical computer system knowledge such as using Google or MS office software and using Terminal/Command lines to run tests
\nVocational certificate or equivalent preferred
\nStrong verbal & written communication skills demonstrated in a team environment
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Upgrades","location":"Menlo Park, CA","team":"Upgrades","allLocations":["Menlo Park, CA"]},"createdAt":1787859143572,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"On product SW and Sys Engr","location":"Menlo Park, CA","team":"On product SW and Sys Engr","allLocations":["Menlo Park, CA"]},"createdAt":1786483387861,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy’s revolutionary linear generator is a sophisticated robot. Inside the generator is a network of computers combining embedded Linux and real-time bare metal applications. These orchestrate the critical tasks of shaping control signals and collecting data from a wide variety of sensors which make this technology possible. Our embedded platform is rapidly evolving, and we need great managers to lead the engineering team making it happen. If you love leading people to solve challenging technological problems and are passionate about driving an efficient, agile process, then we need you!
\nThis is a managing role for an embedded software team.
\nAs a leader in the organization you will:
\n\nTeam Leadership: Supervise, mentor, and guide a team of software engineers, conducting regular one-on-ones and performance reviews
\nProject Management: Oversee the full software development lifecycle, setting clear milestones, managing timelines, and removing roadblocks
\nCross-Functional Collaboration: Partner with product managers, executives, and QA teams to align technical goals with business needs
\nTechnical Guidance: Provide high-level architectural and technical feedback during design reviews
\nHiring and Growth: Interview, hire, and onboard new engineering talent while building paths for career growth within the team
\nYou have...
\n\nExperience: 12+ years embedded software development experience (real-time a plus) including project management experience delivering a commercial product
\nMethodologies: Strong background in Agile, Scrum, or Kanban project management frameworks
\nCommunication: Excellent verbal and written communication skills to bridge the gap between technical and non-technical stakeholders
\nEducation: Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience
\nThis position is a hybrid position (onsite + remote) at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Hourly","department":"Product Testing","location":"Menlo Park, CA","team":"Product Testing","allLocations":["Menlo Park, CA"]},"createdAt":1770319175088,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking a motivated and technically skilled End of Line Technician to join our growing Product Testing team. This role is ideal for individuals who thrive in a fast-paced, hands-on environment, enjoy mechanical and electromechanical work, and are energized by troubleshooting, testing, and continuous improvement.
\nAs an End of Line Technician, you will play a critical role in the assembly, testing, validation, and occasional field deployment of our next-generation linear generator technology. You will perform mechanical and electronics assembly, diagnostics, retrofits, functional testing, core validation, emissions testing, and electronics box (eBox) testing, primarily in-house, with limited field work to support on-site testing or retrofit activities.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"O&M - Operations and Maintenance","location":"Menlo Park, CA","team":"O&M - Operations and Maintenance","allLocations":["Menlo Park, CA"]},"createdAt":1788977279558,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nAs a Field Service Programs & Operations Engineer at Mainspring Energy, you will serve as a technical leader supporting the Operations & Maintenance organizations. You will bridge Field Service, Operations, Quality, and Engineering by translating field challenges into practical technical solutions, scalable service programs, and improved maintenance practices.
\nThis is a field-facing and hands-on engineering role. You will work directly with Field Service Technicians, Supervisors, and Managers to support advanced troubleshooting, develop field service tooling and processes, and plan and execute special projects across the fleet. The role will also support the development and implementation of programs that improve fleet availability, safety, reliability, and field execution.
\nThis position does not have direct people management responsibility but will be expected to provide technical leadership, mentorship, and cross-functional coordination.
\nDevelop and implement Field Service programs, procedures, and processes that improve maintenance execution, safety, reliability, and fleet availability
\nProvide advanced technical troubleshooting support for complex mechanical, electrical, controls, and system-level issues
\nServe as a technical bridge between Field Service and Engineering, translating field issues into engineering requirements and bringing engineering solutions into field execution
\nIdentify, develop, test, and deploy specialized Field Service tooling, test equipment, fixtures, and other resources that improve safety and service efficiency
\nLead and support special projects including fleet retrofits, service campaigns, and major maintenance initiatives
\nAnalyze field failures, maintenance activities, and fleet performance data to identify recurring issues and opportunities for improvement
\nDevelop and improve maintenance procedures, troubleshooting guides, work instructions, and other technical documentation
\nCollaborate with Reliability Engineering, Product Engineering, Supply Chain, Manufacturing, Safety, and Field Service leadership to resolve operational and technical issues
\nMentor and provide technical guidance to Field Service Technicians and Supervisors
\nSupport significant customer issues, outages, and technical events as needed
\nTravel to customer sites and be actively engaged in field activities as required
\nBachelor's degree in Mechanical Engineering, Electrical Engineering, Systems Engineering, or a related technical field
\n8+ years of experience in Field Service, power generation, O&M, industrial maintenance, commissioning, reliability engineering, or a related technical environment
\nExperience troubleshooting complex mechanical, electrical, controls, or electromechanical systems
\nExperience working directly with field technicians, maintenance personnel, or other hands-on technical teams
\nExperience developing technical procedures, maintenance programs, tooling, or field solutions
\nStrong project planning, coordination, and execution skills
\nStrong analytical and problem-solving skills
\nEffective communication and collaboration skills, with the ability to influence across technical and operational organizations
\nWillingness and ability to work hands-on with equipment in field environments and customer sites
\nStrong commitment to safety and operational excellence
\nPrevious experience as a Field Service Engineer, Senior Field Service Technician, Commissioning Engineer, or O&M Engineer
\nExperience in power generation, distributed energy, utilities, or industrial equipment
\nExperience with generators, engines, turbines, electrical distribution systems, controls, or other complex electromechanical systems
\nExperience with field tooling or diagnostic equipment development
\nExperience with Salesforce Field Service, Quickbase, CMMS/EAM, ERP, SQL, Power BI, or similar platforms
\nExperience supporting high-visibility enterprise customers
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO stock options + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"O&M - Operations and Maintenance","location":"Menlo Park, CA","team":"O&M - Operations and Maintenance","allLocations":["Menlo Park, CA"]},"createdAt":1788456317910,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nAs a Field Service Manager at Mainspring Energy, you will lead Field Service Supervisors and support the overall performance, availability, and reliability of Mainspring's operating fleet. You will translate fleet performance objectives into effective field execution by ensuring the organization has the right people, skills, parts, tools, and resources available to safely execute planned and reactive maintenance.
\nThis role provides leadership and direction to Field Service Supervisors while maintaining accountability for fleet performance, workforce capability, resource utilization, and operational readiness. The Manager will work closely with Engineering, Reliability, Supply Chain, Logistics, Safety, Customer Operations, and other internal teams to identify risks, remove operational barriers, and improve field service effectiveness.
\nTeam Leadership: Directly manage, coach, and develop Supervisors. Establish expectations for safety, operational execution, customer engagement, communication, and accountability. Develop supervisor capability, consistency, succession plans, and performance management practices
\nFleet Performance: Monitor fleet availability and maintenance performance; identify reliability risks; ensure appropriate prioritization of reactive versus planned work; review downtime, repeat failures, extended repairs, and trends; drive action plans; lead fleet performance reviews; escalate significant risks with recommendations
\nPersonnel and Resource Management: Develop workforce plans based on fleet growth, maintenance demand, geography, and reactive workload. Evaluate technician capacity, skills, certifications, and coverage. Identify staffing gaps, balance resources, manage subcontractor needs, participate in hiring, and develop training plans
\nStrategic Parts and Resource Planning: Identify critical spares and materials; forecast maintenance and reactive demand with Supply Chain; identify shortages affecting downtime; support stocking-location decisions; plan major maintenance campaigns, upgrades, retrofits, tools, lifting equipment, test equipment, and subcontractor requirements
\nMaintenance and Site Planning: Review requirements across 30-day, 90-day, 6-month, and 12-month horizons. Identify capacity constraints, support outages and major campaigns, ensure critical-path activities have parts and labor, and support new site and fleet expansion planning
\nCross-Functional Operational Leadership: Bridge Field Service with Reliability Engineering, Product Engineering, Supply Chain, Logistics, Safety, Customer Operations, Manufacturing, Technical Support, Finance, and Fleet Operations. Drive closure of issues affecting fleet performance and incorporate field feedback into product and process improvements
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO stock options + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Hourly","department":"O&M - Operations and Maintenance","location":"Menlo Park, CA","team":"O&M - Operations and Maintenance","allLocations":["Menlo Park, CA"]},"createdAt":1790121605494,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThis position is onsite at our Menlo Park HQ. The hourly rate will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base hourly, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is onsite at our Menlo Park HQ. The hourly rate will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base hourly, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Field Service Technician","country":"US","workplaceType":"onsite","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Hourly","department":"O&M - Operations and Maintenance","location":"Long Island, NY","team":"O&M - Operations and Maintenance","allLocations":["Long Island, NY"]},"createdAt":1789511570904,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThis position is onsite in Long Island, NY. The hourly rate will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base hourly, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is onsite in Long Island, NY. The hourly rate will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base hourly, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Field Service Technician (Long Island, NY)","country":"US","workplaceType":"onsite","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Hourly","department":"O&M - Operations and Maintenance","location":"Salinas, CA","team":"O&M - Operations and Maintenance","allLocations":["Salinas, CA"]},"createdAt":1781121385752,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThis position is onsite in Salinas, CA. The hourly rate will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base hourly, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is onsite in Salinas, CA. The hourly rate will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base hourly, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Field Service Technician (Salinas, CA)","country":"US","workplaceType":"onsite","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"O&M - Operations and Maintenance","location":"Menlo Park, CA","team":"O&M - Operations and Maintenance","allLocations":["Menlo Park, CA"]},"createdAt":1781721794944,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nThe Linear Generator is a sophisticated, automated, and integrated system spanning a wide range of engineering disciplines including thermodynamics, mechanical, electrical, software, and controls. As a member of our Fleet Operations & Analytics Team, you will be part of a dynamic group that delivers the best product and experience that Mainspring Energy has to offer. This includes operation and monitoring of our fleet of Linear Generators (LGens), debugging issues, management of incident resolution and advanced data analysis aimed at improving our product and communicating on our fleet performance. \n \nThis is a highly cross-functional role in a rapidly-scaling company function, and there is an enormous opportunity to influence how this work is done now and into the future. The breadth of this role is perfect for an engineer who wants to use their advanced analytical and technical skills in a fast-paced and challenging environment. We are looking for an ambitious and curious individual excited to work at the interface of operations, systems engineering, and analytics.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Finance","location":"Menlo Park, CA","team":"Finance","allLocations":["Menlo Park, CA"]},"createdAt":1790958945398,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nWe are seeking an experienced FP&A professional to support our Services business unit, which services and maintains our hardware/equipment fleet in the field (Operations & Maintenance - O&M) . This role will partner closely with Operations, Field Service, and Supply Chain leadership to drive financial planning, forecasting, and performance analysis specific to a linear generator. The ideal candidate has 5-7 years of FP&A experience, ideally within a hardware, equipment, industrials, or asset-heavy services environment, and is comfortable translating operational metrics (uptime, service costs, spare parts, field labor) into financial outcomes.
\nOwn the annual budgeting, quarterly forecasting, and long-range planning process for the business line, including revenue, cost of service, and margin analysis
\nPartner with Operations and Field Service leaders to build and maintain cost models covering field labor, spare parts/inventory, truck rolls, warranty, and third-party service contracts
\nTrack and report on key O&M/hardware operating metrics (e.g., fleet uptime, mean time to repair, cost per unit serviced, service margin by contract/customer) and connect them to financial performance
\nPrepare monthly management reporting packages, including variance analysis (actuals vs budget/forecast) with clear narrative on drivers
\nSupport pricing and contract profitability analysis for service agreements, maintenance contracts, and warranty programs
\nBuild and maintain financial models to evaluate capital investments (equipment, tooling, spare parts inventory) and business cases for new service programs or geographic expansion
\nPartner with Accounting on month-end close, ensuring accurate cost allocation and revenue recognition for service/maintenance contracts
\nIdentify cost-saving and margin-improvement opportunities across the O&M cost structure
\nDevelop dashboards and self-service reporting tools to give operational leaders real-time visibility into their financial performance
\nSupport ad hoc analyses for senior leadership, including board and investor reporting materials as needed
\nRequired:
\n\nBachelor's degree in Finance, Accounting, Economics, or related field
\n7-10 years of progressive FP&A or corporate finance experience
\nExperience supporting a hardware, equipment, industrials, field services, or asset-intensive business (O&M, install base, or service organizations strongly preferred)
\nStrong financial modeling skills (advanced Excel required; experience building models from scratch)
\nExperience with budgeting/forecasting tools and ERP systems
\nAbility to translate operational/technical metrics into financial insights for non-finance stakeholders
\nStrong communication skills; comfortable presenting to senior operational and finance leadership
\nPreferred:
\n\nMBA or CFA a plus, not required
\nHardware/manufacturing background
\nFamiliarity with cost accounting and revenue recognition as it applies to maintenance/warranty agreements
\nExperience with BI/reporting tools
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Hourly","department":"Supply Chain","location":"Menlo Park, CA","team":"Supply Chain","allLocations":["Menlo Park, CA"]},"createdAt":1765388145482,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nWe are searching for an organized and detail-oriented Inventory Associate to ensure our internal customers in Operations and Maintenance, R&D, and Contract Manufacturing are supplied with the critical parts and kits they need. In this position, you will play a key role in parts kitting and inventory organization, as well as shipping and receiving. You will work within our facility in Menlo Park, collaborating with our highly talented team of mechanics and engineers to bring affordable, dispatchable, and clean energy to the world.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nWe are searching for an organized and detail-oriented Inventory Associate to ensure our internal customers in Operations and Maintenance, R&D, and Contract Manufacturing are supplied with the critical parts and kits they need. In this position, you will play a key role in parts kitting and inventory organization, as well as shipping and receiving. You will work within our facility in Menlo Park, collaborating with our highly talented team of mechanics and engineers to bring affordable, dispatchable, and clean energy to the world.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nWe are searching for an organized and detail-oriented Inventory Associate to ensure our internal customers in Operations and Maintenance, R&D, and Contract Manufacturing are supplied with the critical parts and kits they need. In this position, you will play a key role in parts kitting and inventory organization, as well as shipping and receiving. You will work within our facility in Menlo Park, collaborating with our highly talented team of mechanics and engineers to bring affordable, dispatchable, and clean energy to the world.
\nMainspring is seeking a Manager, CAD & Design Systems to build and scale the Mechanical Engineering organization responsible for CAD operations, product definition, product integration, design release, and configuration management. This leader will set the strategy for how Mechanical Engineering creates, integrates, controls, and releases product definition as the Linear Generator and engineering organization grow in complexity.
\nThe role will lead the existing CAD Operations supervisor and build a new Product Definition & Integration capability. The ideal candidate combines strong CAD and mechanical product-development judgment with people leadership and a systems mindset. This person will not own the PLM software platform; instead, they will represent Mechanical Engineering's needs, prioritize the highest-impact workflow improvements and automations, and partner with the Enterprise Software team to deliver them.
\n• Define and execute the long-term strategy for CAD, product definition, design integration, release, and configuration management within Mechanical Engineering
\n• Lead and develop the CAD Operations and Product Definition & Integration teams, including hiring, capability development, workload planning, and career growth
\n• Own Mechanical Engineering CAD standards, modeling practices, drawing standards, templates, libraries, assembly architecture, and large-assembly methods
\n• Establish the strategy for SolidWorks and CATIA usage, including scalable methods for full-product and other very large assemblies
\n• Ensure the organization maintains authoritative POR and future-state reference assemblies so engineers are designing against the correct product definition
\n• Drive faster and more reliable design release by improving handoffs among Design Engineering, Product Definition, Release, Configuration Management, Manufacturing, and other downstream teams
\n• Represent Mechanical Engineering requirements for PLM workflows, issue resolution, and automation; prioritize improvements based on engineering productivity and product risk
\n• Establish metrics and continuous-improvement mechanisms for CAD throughput, release cycle time, product-definition quality, configuration integrity, and team capacity
\n• BS or MS in Mechanical Engineering, Product Design, or a related technical field, or equivalent relevant experience
\n• 10+ years of experience in mechanical product development, CAD, product definition, or related engineering disciplines, including 3+ years leading technical teams
\n• Deep experience with production CAD environments and strong working knowledge of SolidWorks or comparable parametric CAD systems
\n• Experience with CATIA or another enterprise large-assembly CAD platform strongly preferred
\n• Demonstrated experience improving CAD standards, engineering workflows, product-data quality, or design-release processes in a growing hardware organization
\n• Strong understanding of drawings, GD&T, BOMs, engineering changes, configuration control, and manufacturing handoffs
\n• Ability to think beyond day-to-day execution and build systems, processes, and teams that scale
\n• Strong cross-functional leadership and communication skills, with the ability to influence Design Engineering, Manufacturing, Configuration Management, and software/tooling teams
\n• Experience with ENOVIA, 3DEXPERIENCE, or another enterprise PLM/PDM environment
\n• Experience building or maintaining full-product reference assemblies and product configuration strategies
\n• Experience scaling a CAD/design organization from a small transactional team into a broader product-definition and integration function
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO stock options + benefits.
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Operational Tech and Sys","location":"Menlo Park, CA","team":"Operational Tech and Sys","allLocations":["Menlo Park, CA"]},"createdAt":1787767634428,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nWhy Join Us
\nAt Mainspring, technical documentation isn't just a support function—it’s the backbone of our operations. You won’t be tethered to a desk; you’ll be on the floor, working directly with our hardware and engineering teams. This role offers the unique opportunity to lead and evolve our established documentation systems while staying deeply connected to the 'hands-on' reality of building the grid of the future. If you thrive on translating complex physical systems into clear, actionable guides and want to lead a team that is as comfortable with a wrench as they are with a style guide, this is the place for you.
\nAs Mainspring scales, our technical documentation must be as innovative and reliable as our energy technology. We are looking for a Manager of Technical Writing to lead the team responsible for translating complex engineering and manufacturing processes into the clear, actionable documentation that fuels our growth. You will be a player-coach: driving high-level documentation strategy, overseeing the creation of digital technical visuals (CAD, schematics, process flows), and mentoring a team of writers. Your mission is to ensure that our technical documentation is accurate, accessible, and scalable, and that all relevant technical writing SOPs are maintained and kept up to date.
\nTeam Leadership & Mentorship: Lead a high-performing team of technical writers. Foster a culture of excellence, natural curiosity, and \"hands-on\" technical engagement. Manage workloads, set priorities, and provide professional development for the team
\nDocumentation Strategy & Governance: Establish and maintain global standards for technical documentation styles, tools, processes, and systems for company-wide documentation management and revision control. Ensure consistency across all manuals, assembly instructions, and digital databases
\nCross-Functional Collaboration: Partner with Engineering, Manufacturing, and Field Service to ensure documentation is deeply integrated with hardware development and operational workflows. Act as the bridge between technical experts and end-users
\nVisual Content Oversight: Guide the team in creating high-quality technical visuals, including CAD-derived illustrations, schematics, and process flows. Ensure the team has the necessary tools and training in software like Enovia PLM and Solidworks Composer
\nHands-on Content Development: Act as a player-coach by actively contributing to the creation of high-priority technical documentation. You will balance management duties with direct involvement in complex documentation tasks to ensure we meet critical project milestones
\nExperience: 7+ years of experience in technical writing within an engineering or manufacturing environment, with at least 2+ years in a leadership or management role
\nEducational Background: Bachelor's degree in Technical Communication, English, Engineering, or a related field
\nTechnical Mastery: Proven ability to distill complex mechanical and electrical systems into unambiguous documentation. Strong proficiency in CAD software and visual documentation tools
\nHands-On Mindset: You enjoy working in-person in a \"hands-on\" shop environment. You have excellent mechanical intuition and aren't afraid to pick up a tool to better understand a process
\nCommunication & Influence: Exceptional writing and interpersonal skills. Ability to influence stakeholders and build buy-in for documentation standards across a rapidly scaling organization
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking a Mechanical Drafter to support our engineering team for our Linear Generator platform. In this role, you will build practical drafting skills by supporting CAD modeling and drawing work for COTS (Commercial off-the-shelf) parts, detailing out custom parts and tools, handling assembly rebuilds, and implementing CAD modeling/drawing requests from the engineering team.
\nThis role is intended for drafters who have developed practical CAD drafting experience or early-career engineers who are looking to build this skillset, applying their mechanical fundamentals to CAD modeling and drawing work. A strong candidate should be detail-oriented, eager to learn, and able to execute well-defined tasks with guidance from more experienced drafters or engineers.
\nCreate, refine, and maintain detailed 3D CAD models and 2D engineering drawings for COTS parts
\nExecute on high volumes of CAD queue tickets to incorporate engineering requests into 2D fabrication drawings, 3D models, and BOMs accurately and efficiently within SolidWorks and PLM
\nPerform self-reviews and peer reviews to ensure drawings meet ANSI standards and internal requirements before releasing files via PLM
\nSupport maintenance of reference assemblies, updating metadata, fix and repair broken model mates, defeature complex vendor models, and perform rebuilds
\nAssist engineers with SolidWorks questions on internal channels and support new documentation and continuous improvement initiatives
\n2-4 years or BS in Mechanical Engineering with 1-3 years of industry experience in a drafting role
\nProficient in SolidWorks or a comparable CAD package, modeling, large assembly management, and experience with some level of PDM/PLM model and drawing release workflows
\nFamiliarity of ANSI/ASME standards for dimensioning, datums, GD&T application, and weld/sheet metal callouts.
\nExperience maintaining revision-controlled Bills of Materials and managing metadata fields
\nAbility to execute well-defined CAD tasks carefully, communicate progress, and incorporate feedback from others on the team
\nClear verbal and written communication skills in English and Spanish to interact with US-based and local engineering teams. A willingness to ask questions, learn company processes, and build practical engineering judgment
\nInternship, co-op, project team, research, or early-career experience involving modeling and drawing skills in a SolidWorks comparable CAD package
\nExposure to tolerance analysis on parts and assemblies is a plus
\nDemonstrable experience applying GD&T and ANSI/ASME standards
\nExposure to manufacturing processes such as machining, sheet metal, welding, casting, molding, additive manufacturing, or assembly and ability to identify and resolve design for manufacturability issues is a plus
\nInterest in energy systems, engines, generators, compressors, pumps, thermal systems, fluid systems, structures, electromechanical systems, or industrial equipment
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Mechanical Engr","location":"Menlo Park, CA","team":"Mechanical and Structural Systems","allLocations":["Menlo Park, CA"]},"createdAt":1785976299744,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nAbout the Role\nMainspring is seeking a Mechanical Engineer to own defined-scope mechanical engineering tasks, workstreams, or moderate-complexity projects for our Linear Generator platform. In this role, you will design mechanical hardware, support analysis and testing, drive assigned work through validation and release, and work cross-functionally with engineering, manufacturing, quality, supply chain, test, and service teams.\nThis role is intended for engineers who have developed practical mechanical engineering experience through multiple design, analysis, test, release, or implementation cycles. A strong candidate should be able to independently own defined-scope engineering work, apply sound mechanical fundamentals, identify common risks, communicate clearly, and follow through on deliverables with support available for ambiguity, complex tradeoffs, or higher-risk decisions.\nCandidates who are still primarily learning engineering fundamentals, company processes, and task-level execution may be better aligned to an Associate Mechanical Engineer role, while candidates who have already demonstrated independent ownership of significant projects, subsystems, or technical workstreams may be better aligned to a Senior Mechanical Engineer role.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking a Mechanical Engineer to own defined-scope mechanical engineering tasks, workstreams, or moderate-complexity projects for our Linear Generator platform. In this role, you will design mechanical hardware, support analysis and testing, drive assigned work through validation and release, and work cross-functionally with engineering, manufacturing, quality, supply chain, test, and service teams.
\nThis role is intended for engineers who have developed practical mechanical engineering experience through multiple design, analysis, test, release, or implementation cycles. A strong candidate should be able to independently own defined-scope engineering work, apply sound mechanical fundamentals, identify common risks, communicate clearly, and follow through on deliverables with support available for ambiguity, complex tradeoffs, or higher-risk decisions.
\nCandidates who are still primarily learning engineering fundamentals, company processes, and task-level execution may be better aligned to an Associate Mechanical Engineer role, while candidates who have already demonstrated independent ownership of significant projects, subsystems, or technical workstreams may be better aligned to a Senior Mechanical Engineer role.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking a Mechanical Engineer to own defined-scope mechanical engineering tasks, workstreams, or moderate-complexity projects for our Linear Generator platform. In this role, you will design mechanical hardware, support analysis and testing, drive assigned work through validation and release, and work cross-functionally with engineering, manufacturing, quality, supply chain, test, and service teams.
\nThis role is intended for engineers who have developed practical mechanical engineering experience through multiple design, analysis, test, release, or implementation cycles. A strong candidate should be able to independently own defined-scope engineering work, apply sound mechanical fundamentals, identify common risks, communicate clearly, and follow through on deliverables with support available for ambiguity, complex tradeoffs, or higher-risk decisions.
\nCandidates who are still primarily learning engineering fundamentals, company processes, and task-level execution may be better aligned to an Associate Mechanical Engineer role, while candidates who have already demonstrated independent ownership of significant projects, subsystems, or technical workstreams may be better aligned to a Senior Mechanical Engineer role.
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Mechanical Engr","location":"Menlo Park, CA","team":"Electromechanical","allLocations":["Menlo Park, CA"]},"createdAt":1769618915659,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nMainspring is seeking a Manager with a focus on designing electrical enclosures and cables while improving functionality and system-level performance. This role will involve not only owning engineering development projects but also taking a leadership role in guiding technical decisions and influencing the design process across teams. You will work with cross-functional teams to ensure that key electrical and mechanical subsystems meet challenging technical requirements from concept through manufacturing launch. You will directly manage engineers, providing leadership while ensuring that all team members work towards a cohesive project goal. Ideal candidates will have a strong combination of technical expertise, leadership abilities, and the drive to solve complex problems in a collaborative environment.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking a Manager with a focus on designing electrical enclosures and cables while improving functionality and system-level performance. This role will involve not only owning engineering development projects but also taking a leadership role in guiding technical decisions and influencing the design process across teams. You will work with cross-functional teams to ensure that key electrical and mechanical subsystems meet challenging technical requirements from concept through manufacturing launch. You will directly manage engineers, providing leadership while ensuring that all team members work towards a cohesive project goal. Ideal candidates will have a strong combination of technical expertise, leadership abilities, and the drive to solve complex problems in a collaborative environment.
","id":"86aca04c-106f-4a19-88a8-2e0af7b90493","lists":[{"text":"Core Responsibilities","content":"\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Mechanical Engineering Manager - Electromechanical","country":"US","workplaceType":"onsite","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking a Manager with a focus on designing electrical enclosures and cables while improving functionality and system-level performance. This role will involve not only owning engineering development projects but also taking a leadership role in guiding technical decisions and influencing the design process across teams. You will work with cross-functional teams to ensure that key electrical and mechanical subsystems meet challenging technical requirements from concept through manufacturing launch. You will directly manage engineers, providing leadership while ensuring that all team members work towards a cohesive project goal. Ideal candidates will have a strong combination of technical expertise, leadership abilities, and the drive to solve complex problems in a collaborative environment.
","descriptionBodyPlain":"Job Overview\nMainspring is seeking a Manager with a focus on designing electrical enclosures and cables while improving functionality and system-level performance. This role will involve not only owning engineering development projects but also taking a leadership role in guiding technical decisions and influencing the design process across teams. You will work with cross-functional teams to ensure that key electrical and mechanical subsystems meet challenging technical requirements from concept through manufacturing launch. You will directly manage engineers, providing leadership while ensuring that all team members work towards a cohesive project goal. Ideal candidates will have a strong combination of technical expertise, leadership abilities, and the drive to solve complex problems in a collaborative environment.\n","hostedUrl":"https://jobs.lever.co/mainspringenergy/86aca04c-106f-4a19-88a8-2e0af7b90493","applyUrl":"https://jobs.lever.co/mainspringenergy/86aca04c-106f-4a19-88a8-2e0af7b90493/apply"},{"additionalPlain":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.\n","additional":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Hourly","department":"Upgrades","location":"Menlo Park, CA","team":"Upgrades","allLocations":["Menlo Park, CA"]},"createdAt":1790894292464,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nAs we scale our deployments from Behind-The-Meter (BTM) commercial microgrids to utility-scale Front-of-the-Meter (FTM) power plants and data centers, we are expanding our system boundaries to provide fully integrated, turn-key power solutions.
\nThis role sits at the intersection of power systems engineering, cross-functional hardware integration, and external vendor management. You will own the technical architecture and vision of how Mainspring power plant sites are built, including full ownership of the modular power skids. This includes ownership of the broader site: how generators, inverters, skids, and energy storage come together as a complete and configurable power solution. You will act as the technical anchor, translating high-level single-line diagrams and architectural concepts into robust, mass-manufacturable modular skid-based products. The ideal candidate will bridge the gap between initial concept and factory-ready design by driving requirements across internal multidisciplinary teams (Electrical, Mechanical, Project Delivery, Software Controls, and Supply Chain) while managing critical 3rd-party design and manufacturing partners to scale the product line.
"},{"text":"Responsibilities","content":"Take full engineering ownership of Mainspring's next-generation modular power integration skids, actively translating high-level system architectures into fully commercialized, production-ready assets by driving the design from initial concept through validation and final manufacturing release
\nDefine and own the skid-level power topology for utility-scale and data center sites, ensuring seamless electrical and physical integration between Linear Generators, central inverters, step-up transformers, switchgear, and energy storage systems (BESS)
\nOwn detailed skid engineering decisions: hardware selection, spatial layout, thermal management, environmental protection (NEMA/IP rating, seismic/wind loading as applicable), manufacturability, and field serviceability
\nPartner actively with internal electrical engineering, mechanical engineering, project delivery, operations, software controls, and supply chain teams to extract, synthesize, and freeze comprehensive system requirements
\nDirect and manage third-party design firms and external manufacturers, serving as the primary technical point of contact to ensure engineering and manufacturing outputs align with technical specifications and quality standards
\nDrive the scalability and production readiness of larger skid configurations alongside manufacturing suppliers, ensuring the architectural design leverages standardized hardware, reduces site-level installation labor, and is optimized for high-volume replication
\nOwn the skid's cost target and drive design-to-cost trade-offs across hardware selection, supplier strategy, and configuration options
\nDevelop a site design configuration tool that specifies the optimal inverter and skid configuration based upon customer site requirements
\nBachelor's or advanced degree in Electrical Engineering or a related field
\n24+ years of direct experience productizing complex, multi-disciplinary industrial systems
\nDeep technical knowledge of power conversion systems, including medium-voltage (MV) step-up transformers (12.47kV–35kV), central inverters, switchgear, vacuum circuit breakers, protective relays, and high-current busbar/cabling systems
\nDemonstrated experience driving the engineering lifecycle of modular hardware systems, including a strong grasp of design-to-cost principles, supplier capacity scaling, field reliability, and configuration control
\nStrong cross-functional leadership skills with a track record of translating diverse technical requirements from electrical, mechanical, and operations teams into a cohesive, manufacturing-ready system design
\nDemonstrated success directing 3rd-party design, engineering, or Contract Manufacturing (CM) partners from initial concept through to sustained volume production
\nStrong working knowledge of grid interconnection standards, utility protection schemes, and safety/compliance frameworks (e.g., IEEE 1547, UL 1741 SB/SA, NFPA 70/NEC, NFPA 855)
\nSkilled in SCADA integration, industrial networking, and designing or certifying control systems to UL 508/508A standards
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Mechanical Engr","location":"Menlo Park, CA","team":"Mechanical and Structural Systems","allLocations":["Menlo Park, CA"]},"createdAt":1785977830216,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nAbout the Role\nMainspring is seeking a Principal Mechanical Engineer to serve as a company-level technical authority in a critical mechanical engineering domain for our Linear Generator platform. In this role, you will shape long-term technical direction, define or strongly influence architecture and design principles, guide high-consequence technical decisions, and help the organization solve problems that are novel, ambiguous, and central to long-term product and business success.\nThis role is intended for engineers who have already demonstrated broad technical leadership across multiple teams, systems, or major program areas and are now ready to create durable company-level technical leverage. A strong candidate should be able to operate with exceptional autonomy, advise senior leadership, anticipate long-term technical and business risks, and create principles, standards, methods, or decision frameworks that improve how Mainspring approaches major classes of engineering problems.\nCandidates who primarily shape technical direction across multiple teams or system areas may be better aligned to a Senior Staff Mechanical Engineer role. Principal-level candidates should bring rare technical judgment in a company-critical domain and demonstrate impact that extends beyond individual projects, teams, or near-term program execution\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nAbout the Role
\nMainspring is seeking a Principal Mechanical Engineer to serve as a company-level technical authority in a critical mechanical engineering domain for our Linear Generator platform. In this role, you will shape long-term technical direction, define or strongly influence architecture and design principles, guide high-consequence technical decisions, and help the organization solve problems that are novel, ambiguous, and central to long-term product and business success.
\nThis role is intended for engineers who have already demonstrated broad technical leadership across multiple teams, systems, or major program areas and are now ready to create durable company-level technical leverage. A strong candidate should be able to operate with exceptional autonomy, advise senior leadership, anticipate long-term technical and business risks, and create principles, standards, methods, or decision frameworks that improve how Mainspring approaches major classes of engineering problems.
\nCandidates who primarily shape technical direction across multiple teams or system areas may be better aligned to a Senior Staff Mechanical Engineer role. Principal-level candidates should bring rare technical judgment in a company-critical domain and demonstrate impact that extends beyond individual projects, teams, or near-term program execution
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nAbout the Role
\nMainspring is seeking a Principal Mechanical Engineer to serve as a company-level technical authority in a critical mechanical engineering domain for our Linear Generator platform. In this role, you will shape long-term technical direction, define or strongly influence architecture and design principles, guide high-consequence technical decisions, and help the organization solve problems that are novel, ambiguous, and central to long-term product and business success.
\nThis role is intended for engineers who have already demonstrated broad technical leadership across multiple teams, systems, or major program areas and are now ready to create durable company-level technical leverage. A strong candidate should be able to operate with exceptional autonomy, advise senior leadership, anticipate long-term technical and business risks, and create principles, standards, methods, or decision frameworks that improve how Mainspring approaches major classes of engineering problems.
\nCandidates who primarily shape technical direction across multiple teams or system areas may be better aligned to a Senior Staff Mechanical Engineer role. Principal-level candidates should bring rare technical judgment in a company-critical domain and demonstrate impact that extends beyond individual projects, teams, or near-term program execution
\nMainspring is seeking an open-minded, curious, and highly motivated R&D Test Engineer who likes to solve challenging cross-functional problems in both a research and production environment. In this role, you will design and execute tests on the Linear Generator, focusing on new electrical and software changes that improve product capabilities and performance.You will lead critical sub-system and system-level development and validation tests on new releases of our product and gain exposure to the entire system, including electrical and mechanical components, software, and controls. The breadth of this role is perfect for an engineer or researcher who wants to use their advanced experimental and analytical skills in a fast-paced product development environment.
\nPerform hands on work and work directly with technicians to troubleshoot, retrofit, and operate our Linear Generator test units
\nCollaborate with engineering teams to steer R&D projects by designing and executing experiments that inform product design
\nAnalyze data, generate reports and communicate results with engineering teams to facilitate learnings and design releases
\nManage test priorities on a daily basis to meet higher level deadlines with a focus on throughput and completing high value studies
\nDevelop & improve processes and infrastructure to support testing on our next generation products
\nMaster’s degree in electrical engineering, mechanical engineering, physics, or equivalent with 3+ years of applicable experience
\nExperience designing and executing tests in an industrial or academic environment, specifically involving instrumentation and data analysis
\nSuccessful communicator, with a collaborative mindset, who will interface across a range of teams and personalities
\nProficiency in programming with Python/ MatLab/ C++ (at least one)
\nStrong organizational and project management skills
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Supply Chain","location":"Menlo Park, CA","team":"Supply Chain","allLocations":["Menlo Park, CA"]},"createdAt":1779994025525,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nThe Buyer/Planner will be managing various commodities and suppliers from “quote to pay” to ensure continuity of supply and reduce the cost of the assigned portfolio. The candidate will be organized, communicative, hands-on and will have regular shop floor engagement and constant cross-functional engagement with production, NPI, engineering, logistics, material handling, and suppliers. The role balances tactical buying excellence with advanced planning, supplier coordination, and cost control, ensuring uninterrupted supply while supporting business objectives.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThe Buyer/Planner will be managing various commodities and suppliers from “quote to pay” to ensure continuity of supply and reduce the cost of the assigned portfolio. The candidate will be organized, communicative, hands-on and will have regular shop floor engagement and constant cross-functional engagement with production, NPI, engineering, logistics, material handling, and suppliers. The role balances tactical buying excellence with advanced planning, supplier coordination, and cost control, ensuring uninterrupted supply while supporting business objectives.
","id":"c959cce7-f95f-49b9-8b85-f768e4583d8a","lists":[{"text":"Key Responsibilities","content":"This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThe Buyer/Planner will be managing various commodities and suppliers from “quote to pay” to ensure continuity of supply and reduce the cost of the assigned portfolio. The candidate will be organized, communicative, hands-on and will have regular shop floor engagement and constant cross-functional engagement with production, NPI, engineering, logistics, material handling, and suppliers. The role balances tactical buying excellence with advanced planning, supplier coordination, and cost control, ensuring uninterrupted supply while supporting business objectives.
","descriptionBodyPlain":"Job Overview\nThe Buyer/Planner will be managing various commodities and suppliers from “quote to pay” to ensure continuity of supply and reduce the cost of the assigned portfolio. The candidate will be organized, communicative, hands-on and will have regular shop floor engagement and constant cross-functional engagement with production, NPI, engineering, logistics, material handling, and suppliers. The role balances tactical buying excellence with advanced planning, supplier coordination, and cost control, ensuring uninterrupted supply while supporting business objectives.\n","hostedUrl":"https://jobs.lever.co/mainspringenergy/c959cce7-f95f-49b9-8b85-f768e4583d8a","applyUrl":"https://jobs.lever.co/mainspringenergy/c959cce7-f95f-49b9-8b85-f768e4583d8a/apply"},{"additionalPlain":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.\n","additional":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Hourly","department":"Project Delivery","location":"Menlo Park, CA","team":"Commissioning Technician, Hourly","allLocations":["Menlo Park, CA","Davis, CA","Fresno, CA","Sacramento, CA","Charlotte, NC","Charleston, WV","Dallas-Fort Worth, TX","Denver, CO","Detroit, MI","Houston, TX","Phoenix, AZ","Salt Lake City, UT","Wichita, KS","Tulsa, OK","Pittsburgh, PA"]},"createdAt":1768348966456,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\n \nMainspring Energy is seeking a highly motivated, mechanically inclined Senior Commissioning Operations Technician to join our growing Commissioning team. In this role, you will play a direct lead in completing planned and reactive service operations while transitioning into the technical operation of our systems. You will be responsible for the mechanical integrity of our units while increasingly taking on the configuration and startup of custom systems based on Mainspring's linear generators.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"On product SW and Sys Engr","location":"Menlo Park, CA","team":"On product SW and Sys Engr","allLocations":["Menlo Park, CA"]},"createdAt":1770248693303,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nWe are seeking a Senior Automation & Controls Engineer who applies sound software engineering practices to design and deliver industrial automation systems using the Beckhoff Platform. This role focuses on building reliable, maintainable, and scalable control systems in a real-world manufacturing environment.\n \nYou will develop automation solutions that balance deterministic control requirements with modern engineering practices such as modular design, version control, code reviews, and disciplined change management. While the work is rooted in traditional industrial automation, there is an increasing emphasis on improving the development, testing, and deployment of control software.\n \nIn this role, you will work across the full lifecycle of automation systems—from electrical design and hardware selection to controls software development, deployment, commissioning, and long-term support. A significant portion of your time, approximately 20-25%, will also be dedicated to the maintenance, improvement, and upgrading of existing equipment. You will collaborate closely with manufacturing, electrical, mechanical, and software teams to ensure systems are safe, reliable, and adaptable to evolving production needs.\n \nThe role is based at Mainspring Headquarters in Menlo Park, California, and is primarily on-site with some travel within North America.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Senior Controls & Automation Engineer","country":"US","workplaceType":"onsite","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Off product SW and Data Sys Engr","location":"Menlo Park, CA","team":"Off product SW and Data Sys Engr","allLocations":["Menlo Park, CA"]},"createdAt":1787768038619,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nWe are seeking a Senior DevOps Engineer to act as a technical pillar of our platform team. In this role, you will transition from simply maintaining infrastructure to actively designing, building, and scaling it. You will own the lifecycle of several existing and brand-new infrastructure projects, driving architectural decisions, upgrading our CI/CD pipelines, and integrating modern AI-driven workflows and autonomous agents into our platform ecosystem.
\nAs a Senior DevOps Engineer you will work with a high degree of autonomy. While you will collaborate with Staff and Principal Engineers on advanced architectural patterns, you are expected to independently lead projects from conception to production. Your work will directly impact our system's reliability, developer velocity, operational autonomy, and overall engineering efficiency.
\nBuild & Redesign: Lead the creation of new infrastructure projects and drive the comprehensive redesign of aging legacy systems to modern, cloud-native standards
\nInfrastructure as Code (IaC): Architect, write, test, and manage robust IaC templates using Terraform across multi-cloud environments
\nProcess Modernization: Identify bottlenecks in our engineering workflows and design, document, and implement entirely new processes to optimize our DevOps maturity
\nAdvanced Automation & Agentic Workflows: Build robust automation frameworks using Python (primary language) and AI agents to automate routine support, maintenance tasks, log analysis, and incident triage, eliminating manual operational toil
\nIndependent Execution: Take full ownership of projects. You will be responsible for planning, executing, and deploying your initiatives with minimal daily oversight
\nCollaborative Design Reviews: Partner with Staff and Senior Staff Engineers to review architectural designs, ensuring alignment with company standards, advanced patterns, and AI/agent capabilities
\nDocumentation & Shared Knowledge Champion: Author clear system architecture diagrams and runbooks. Build and maintain centralized AI prompt/skill libraries and tooling to elevate team capabilities
\nVulnerability Management & AI Guardrails: Take a proactive role in triaging complex security issues, defining IAM policies, and establishing safety guardrails and access controls for cloud environments and autonomous AI agents
\nAutomated Support & Developer Advocacy: Serve as a technical advisor for dev teams, building AI-assisted support tools (e.g., automated troubleshooting agents) to drive developer self-service
\nCloud Architecture: Deep production experience with GCP (Google Cloud Platform) and/or AWS (Amazon Web Services)—ideally both
\nInfrastructure as Code: Advanced proficiency in Terraform, including writing modular, reusable, and secure configurations
\nCI/CD Pipelines: Deep expertise in constructing and optimizing enterprise-grade pipelines, with a strong preference for GitLab (and/or GitHub)
\nScripting, Software Engineering & AI Integration: Strong software engineering fundamentals in Python, paired with practical experience leveraging AI, LLM tooling, or agentic frameworks (e.g., Google ADK, LangChain, or custom tool-calling agents) for operational automation
\nContainers & Orchestration: Production-grade experience managing Kubernetes (K8s) clusters, helm charts, and containerized microservices using docker images
\nServerless & Microservices: Hands-on experience architecting and deploying solutions utilizing AWS Lambdas, GCP Cloud Run, and container automation frameworks
\nHigh Ownership & Accountability: You understand that your technical choices carry a broad blast radius where downtime or misconfigurations result in significant business delays. You design with high availability, self-healing, guardrails, and rollback strategies in mind
\nArchitectural & AI Pragmatism: You know when to build a custom solution, when to leverage existing cloud-native tools, and how to evaluate AI solutions to solve real operational problems rather than chasing hype
\nStrong Communicator: Ability to explain highly technical, low-level cloud concepts clearly to stakeholders, product developers, and business partners
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Electrical Engr","location":"Menlo Park, CA","team":"Electrical Engineering","allLocations":["Menlo Park, CA"]},"createdAt":1770420890019,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. You will join a talented team responsible for our electrical system architecture. Your primary focus will be the integration and performance of high-power conversion hardware as it interfaces with both the Linear Generator and the customer’s grid. \n \nWe have a highly impactful opportunity for an electrical engineer to be part of the team that is responsible for the Linear Generator’s power delivery and integration into customers’ power systems. This role focuses on system-level architecture and validation rather than ground-up power converter or PCB design. This is a deeply hands-on position; you will be the technical authority in the lab, personally putting grid-interactive inverters through rigorous characterization and stability testing to ensure they meet our high standards before they ever reach a customer site. Your ownership extends through the entire product lifecycle from fine-tuning firmware parameters in a controlled environment to monitoring fleet performance and leading root-cause analysis for complex system-integration challenges in the field.\n\n\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nLead Corrective and Preventive Action (CAPA) root-cause investigations to diagnose and resolve complex field and lab grid-tied inverter (GTI) anomalies
\nConfigure and tune inverter parameters for stable operation across grid-forming and grid-following modes
\nValidate microgrid integration, black-start capabilities, and grid-edge compliance (CA Rule 21, IEEE 1547-2018, low-voltage ride-through)
\nSupport qualification testing and integration for next-generation power system architectures
\nPerform critical design reviews and collaborate cross-functionally with mechanical, thermal, controls, test engineering and software engineers to ensure holistic system performance and manufacturability
\nYou should have...
\nBachelor's or Master's degree in Electrical Engineering or a related field.
\n5+ years of hands-on experience integrating industrial power conversion hardware or energy storage systems
\nStrong troubleshooting skills with AC power systems, including waveform analysis, fault behavior, and system stability
\nComfort working on high voltage systems (400-800 Vac, up to 1500Vdc) in both a laboratory and industrial field environment
\nExperience with industrial communication protocols (Modbus TCP/RTU, CANbus, SunSpec) for power electronics control
\nThe ability to work independently and own complex technical problems from initial identification through final resolution
\nDemonstrated experience in the development, deployment, or optimization of grid-scale energy projects
\nExpertise in Protection & Control (P&C), including programming SEL or Basler relays and coordinating with utility engineers for grid interconnection
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Senior Electrical Engineer - Inverter & Grid Integration","country":"US","workplaceType":"onsite","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Electrical Engr","location":"Menlo Park, CA","team":"Electrical Engineering","allLocations":["Menlo Park, CA"]},"createdAt":1775599385245,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a talented team of electrical engineers that own hardware design from initial concept through test and manufacturing.\n\nWe have a high impact opportunity for a power electronics engineer to shape the future of the Linear Generator’s power electronics systems.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a talented team of electrical engineers that own hardware design from initial concept through test and manufacturing.
We have a high impact opportunity for a power electronics engineer to shape the future of the Linear Generator’s power electronics systems.
This role is an amazing growth opportunity, where you will work closely with and learn from a small team of top-caliber power electronics engineers. Working together, you will jointly own all the custom power electronics within our system.
\nThis is a hybrid position (onsite + remote) at our Menlo Park HQ. It will require you to be onsite as required to perform testing, troubleshooting, manufacturing support, etc. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This role is an amazing growth opportunity, where you will work closely with and learn from a small team of top-caliber power electronics engineers. Working together, you will jointly own all the custom power electronics within our system.\nThis is a hybrid position (onsite + remote) at our Menlo Park HQ. It will require you to be onsite as required to perform testing, troubleshooting, manufacturing support, etc. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Senior Electrical Engineer - Power Electronics","country":"US","workplaceType":"hybrid","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a talented team of electrical engineers that own hardware design from initial concept through test and manufacturing.
We have a high impact opportunity for a power electronics engineer to shape the future of the Linear Generator’s power electronics systems.
Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Electrical Engr","location":"Menlo Park, CA","team":"Electrical Engineering","allLocations":["Menlo Park, CA"]},"createdAt":1786742386173,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nAre you an innovative hardware leader who thrives on driving cutting-edge electronics from initial concept to production? Do you prefer the challenge of owning complex, low-voltage control systems and guiding cross-functional teams through technical hurdles over routine, single-phase component tweaking? Mainspring Energy is looking for a highly autonomous, intellectually curious, and influential Senior Electrical Engineer, Electronics Design to join our core Electrical Engineering organization. Unlike traditional electrical design roles confined to narrow subsystems or isolated schematic capture, this is a high-impact engineering position where you will take end-to-end ownership and act as the technical lead for the critical electrical hardware and PCBA designs that power our revolutionary Linear Generator. Working alongside a world-class team of multidisciplinary engineers, you will have the execution autonomy to design advanced low-voltage (< 60V) systems, spearhead complex hardware validation and technical reviews, and directly shape the future of our power generation control architecture.
\nMainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a talented team of electrical engineers that own hardware design from initial concept through test and manufacturing. We have a high impact opportunity for an electronics engineer to shape the future of the Linear Generator’s electrical control hardware systems. As a member of the team, you will:
\n\nLow-Voltage Hardware Design: Design low-voltage (< 60V) electrical systems and PCBAs that enable core functions and expand the capability of the Linear Generator
\nBring-Up & Validation: Own the full bring-up, validation, and qualification of your custom electrical hardware designs
\nTechnical Reviews: Lead cross-functional design reviews to present concepts, align requirements, and secure approvals
\nComplex Diagnostics: Debug and troubleshoot complex hardware issues that arise across field deployments, test labs, and the production floor
\nDesign for Reliability: Partner closely with reliability engineers to analyze hardware performance and continuously increase system robustness
\nManufacturing Collaboration: Work directly with our New Product Introduction (NPI) team and external suppliers to optimize designs for manufacturability (DFM) and testability (DFT)
\nCross-Domain Integration: Interface with high-voltage hardware teams and define requirements for cabling and embedded firmware support
\nTeam Growth: Learn complex design concepts and mentor peers while collaborating with a world-class engineering team
\nYou have...
\n\n5+ years of experience with a Bachelor's degree, or 4+ years of experience with a Master's degree, in Electrical Engineering or a related field
\nProven hands-on experience designing, troubleshooting, and realizing low-voltage electrical hardware (e.g., DC/DC converters, relays, e-fuses, and MOSFETs)
\nProficiency with PCBA schematic capture and PCB design tools (Altium strongly preferred)
\nStrong fundamentals in analog/mixed-signal design, including operational amplifiers, ADCs, and hardware filtering (anti-aliasing, bandpass, etc.)
\nExperience performing component derating analysis, worst-case tolerance stack-ups, and Design Failure Mode and Effects Analysis (DFMEA)
\nDemonstrated ability to drive projects forward from initial requirements through production
\nA \"collaborate-first\" mindset with strong communication skills across diverse technical teams and personalities
\nExperience in the full hardware development life cycle of PCBA’s and electrical assemblies, from requirements development to manufacturing support
\nFamiliarity with hardware reliability and environmental validation testing (e.g., HALT, thermal chamber testing, Hipot, vibration)
\nExperience working in a startup or rapid product development environment
\nFamiliarity with project management and documentation tools (e.g., Jira, Confluence)
\nBasic programming or scripting experience (Python, C, or C++) specifically for automating lab bench tests or debugging hardware
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"On product SW and Sys Engr","location":"Menlo Park, CA","team":"On product SW and Sys Engr","allLocations":["Menlo Park, CA"]},"createdAt":1786483764041,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThis is a managing role for an embedded software team.
\nAs a leader in the organization you will:
\n\nStrategic Leadership: Define the long-term technical roadmap and align engineering deliverables with overarching business goals
\nTeam Leadership: Supervise, mentor, and guide a team of software engineers, conducting regular one-on-ones and performance reviews
\nProject Management: Oversee the full software development lifecycle, setting clear milestones, managing timelines, and removing roadblocks
\nProcess and Architecture: Drive engineering excellence by defining org-wide standards for code quality, architectural governance, and system reliability
\nCross-Functional Collaboration: Partner with product managers, executives, and QA teams to align technical goals with business needs
\nTechnical Guidance: Provide high-level architectural and technical feedback during design reviews
\nHiring and Growth: Interview, hire, and onboard new engineering talent while building paths for career growth within the team
\nYou have...
\n\nExperience: 15+ years embedded software development experience (real-time a plus) including 4+ years of people management, and project management experience delivering multiple commercial products
\nMethodologies: Strong background in Agile, Scrum, or Kanban project management frameworks
\nInfluence: Strong stakeholder management skills to negotiate priorities with executives, product VPs, and external partners
\nEducation: Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nOur Linear Generator is a sophisticated system integrating a wide range of engineering disciplines, including thermodynamics, mechanical, electrical, software, and controls. To support our rapid transition into volume manufacturing we are actively expanding the scope and size of our Failure Analysis team.
\nWe are looking for a highly motivated Senior Failure Analysis Engineer with a strong electrical engineering background to join us. In this role, you will own the investigation of electrical failures, scaling our FA throughput and translating physics-of-failure insights into hardware improvements. This is a high-visibility and high-impact role where your findings will help steer design iterations, prevent escapes, increase test coverage and help ensure the ultimate reliability of the fundamentally new class of power generation.
\nLead Hands-on Investigations: Perform deep-dive troubleshooting and debugging on a wide variety of electrical enclosures and hardware, ranging from low-voltage logic controllers to high-voltage power switching systems
\nDrive Root Cause Analysis: Apply structured engineering and problem-solving methodologies to pinpoint mechanisms of failure, translating your findings into actionable containment, corrective, and preventive actions (CAPA)
\nAccelerate FA Throughput: Streamline diagnostic workflows and optimization techniques to increase the pace of our failure analysis loop, ensuring rapid feedback for fast-moving product upgrade programs
\nCollaborate Cross-Functionally: Work closely with Design Engineering, Manufacturing, Quality, Reliability, and field maintenance teams to clearly communicate data-driven FA findings and influence product improvements
\nBuild the Knowledge Base: Document diagnostic workflows, teardown procedures, and failure-mode data to build a resourceful knowledge base
\nCoach and Mentor: Provide technical guidance, mentorship, and coaching to less experienced failure analysis engineers and technicians, raising the collective technical bar and impact of the team
\nYou thrive at the intersection of electrical hardware and physics. You love getting your hands on in the lab, tracing signals, and finding the needle in a haystack within complex electrical architectures
\nYou are fascinated by environmental and system interactions. The challenge of understanding how EMC/EMI issues, thermal cycling, moisture, and harsh operating environments interact with complex power electronics excites you
\nYou are a master of structured problem-solving. You don't rely on guesswork; you systematically approach failures using data and frameworks to build an ironclad case for root cause analysis
\nYou thrive in dynamic, cross-disciplinary environments. You enjoy working side-by-side with cross-functional teams, seamlessly closing gaps to solve multi-faceted system issues
\nYou are an impactful communicator. You can translate complex, highly technical electrical failure mechanisms into clear, concise, and actionable insights for both technical peers and executive stakeholders
\nBachelor’s degree in Electrical Engineering, Physics, or a related technical discipline required
\nMinimum 5–8+ years of direct, applicable experience in failure analysis, electrical troubleshooting, or reliability engineering
\nDeep expertise in analyzing system-level electrical interactions, including hands-on experience identifying and mitigating EMC/EMI issues and environmental degradation
\nProficiency with common structured problem-solving methodologies (e.g., 8D, Ishikawa diagrams, 5-Why analysis)
\nStrong verbal and written communication skills to construct clear FA reports and presenting technical data to cross-functional teams
\nExperience with coaching or mentoring junior engineers or laboratory technicians
\nDetail-oriented mindset with the ability to manage multiple priorities comfortably in a fast-paced, high-growth environment
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Hourly","department":"O&M - Operations and Maintenance","location":"Menlo Park, CA","team":"O&M - Operations and Maintenance","allLocations":["Menlo Park, CA"]},"createdAt":1790121674924,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThis position is onsite at our Menlo Park HQ. The hourly rate will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base hourly, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is onsite at our Menlo Park HQ. The hourly rate will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base hourly, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Senior Field Service Technician","country":"US","workplaceType":"onsite","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Hourly","department":"O&M - Operations and Maintenance","location":"Long Island, NY","team":"O&M - Operations and Maintenance","allLocations":["Long Island, NY"]},"createdAt":1789511713709,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThis position is onsite in Long Island, NY. The hourly rate will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base hourly, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is onsite in Long Island, NY. The hourly rate will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base hourly, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Senior Field Service Technician (Long Island, NY)","country":"US","workplaceType":"onsite","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Hourly","department":"O&M - Operations and Maintenance","location":"Salinas, CA","team":"O&M - Operations and Maintenance","allLocations":["Salinas, CA"]},"createdAt":1781121485047,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThis position is onsite in Salinas, CA. The hourly rate will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base hourly, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is onsite in Salinas, CA. The hourly rate will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base hourly, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Senior Field Service Technician (Salinas, CA)","country":"US","workplaceType":"onsite","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"department":"NPI - New Product Introduction","location":"Menlo Park, CA","team":"NPI - New Product Introduction","allLocations":["Menlo Park, CA"]},"createdAt":1788192030995,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nOversees and coordinates all day-to-day operational and support activities of the shop, ensures that work production meets the objectives, specifications, and standards, and that all applicable operating policies and procedures are adhered to
\nOperate standard equipment, i.e. vertical milling machines, band saw, drill press, and measuring tools to produce prototype parts
\nConsult with engineers regarding design, capacity and purpose, and types of materials to be used for fabrication
\nAnalyze written specifications, drawings, rough sketches, and oral instructions to plan layout and determine sequence of operations. Plans machining by studying work orders, engineering plans, materials, specifications, drawings, reference planes, locations of surfaces, and machining parameters; interprets geometric dimensions and tolerances
\nWorks with engineers to evaluate processes and recommends changes or modifications for efficiency and adaptability to setup and production
\nMay review, evaluate, and make recommendations for purchases such as supplies, materials, and/or equipment
\nMay supervise the work of employees engaged in shop production and production support activities, to include recommendations for hiring, termination, performance evaluation, training, work allocation, and problem resolution
\nMaintains current knowledge with respect to relevant state-of-the-art technology, equipment, and/or systems
\nPerforms miscellaneous job-related duties as assigned
\nProduces custom tooling and fixture design as needed for complex prototypes
\nHigh school diploma or GED; at least 7 years of experience directly related to the duties and responsibilities specified
\nCompleted degree(s) from an accredited institution that are above the minimum education requirement may be substituted for experience on a year for year basis
\nExperience with MasterCAM, 5 axis programming
\nAbility to operate standard and specialized equipment to produce prototype parts
\nAbility to perform standard shop computations
\nSkill in production of parts with extremely close tolerances
\nAbility to perform experimental set ups and complex machining procedures
\nWork in a collaborative environment
\nAbility to read, understand, follow, and enforce safety procedures
\nStrong interpersonal skills and the ability to effectively communicate with a wide range of individuals in a diverse community
\nLeadership skills
\nAbility to supervise and train employees on basic machine operations
\nWorking knowledge of geometric dimensions and tolerances
\nWorking knowledge of AutoCAD, Solid Works and/or related CAD software
\nKnowledge of American National Standards Institute - ANSI
\nModerate physical activity. Requires handling of average-weight objects up to 25 pounds or standing and/or walking for more than four (4) hours per day
\nWork environment involves some exposure to hazards or physical risks, which require following basic safety precautions
\nWork may involve moderate exposure to unusual elements, such as extreme temperatures, dirt, dust, fumes, smoke, unpleasant odors, and/or loud noises
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Materials Engineering","location":"Menlo Park, CA","team":"Materials Engineering","allLocations":["Menlo Park, CA"]},"createdAt":1786654394359,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nWe have a high-impact opportunity for a Senior Materials and Process Engineer who wants to join a world-class engineering team and help scale production of the Linear Generator. The materials and process team at Mainspring Energy works on complex development projects which are at the intersection of properties, performance and processing of a wide range of materials – non ferrous, ferrous, coatings, graphite, polymers etc. \nIn this role, you will develop reliable cost effective materials solutions and manage existing solutions through validation testing, process development and deployment on an actual part/subassembly. This is a great opportunity to be part of cross functional projects and collaborate with multiple teams such as Supply chain, Quality, Reliability, Design and Production. \n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nWe have a high-impact opportunity for a Senior Materials and Process Engineer who wants to join a world-class engineering team and help scale production of the Linear Generator. The materials and process team at Mainspring Energy works on complex development projects which are at the intersection of properties, performance and processing of a wide range of materials – non ferrous, ferrous, coatings, graphite, polymers etc.
\nIn this role, you will develop reliable cost effective materials solutions and manage existing solutions through validation testing, process development and deployment on an actual part/subassembly. This is a great opportunity to be part of cross functional projects and collaborate with multiple teams such as Supply chain, Quality, Reliability, Design and Production.
","id":"b9baa611-801a-463f-a721-340511554d0d","lists":[{"text":"Responsibilities","content":"This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Senior Materials and Process Engineer","country":"US","workplaceType":"onsite","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nWe have a high-impact opportunity for a Senior Materials and Process Engineer who wants to join a world-class engineering team and help scale production of the Linear Generator. The materials and process team at Mainspring Energy works on complex development projects which are at the intersection of properties, performance and processing of a wide range of materials – non ferrous, ferrous, coatings, graphite, polymers etc.
\nIn this role, you will develop reliable cost effective materials solutions and manage existing solutions through validation testing, process development and deployment on an actual part/subassembly. This is a great opportunity to be part of cross functional projects and collaborate with multiple teams such as Supply chain, Quality, Reliability, Design and Production.
","descriptionBodyPlain":"Job Overview\nWe have a high-impact opportunity for a Senior Materials and Process Engineer who wants to join a world-class engineering team and help scale production of the Linear Generator. The materials and process team at Mainspring Energy works on complex development projects which are at the intersection of properties, performance and processing of a wide range of materials – non ferrous, ferrous, coatings, graphite, polymers etc. \nIn this role, you will develop reliable cost effective materials solutions and manage existing solutions through validation testing, process development and deployment on an actual part/subassembly. This is a great opportunity to be part of cross functional projects and collaborate with multiple teams such as Supply chain, Quality, Reliability, Design and Production. \n","hostedUrl":"https://jobs.lever.co/mainspringenergy/b9baa611-801a-463f-a721-340511554d0d","applyUrl":"https://jobs.lever.co/mainspringenergy/b9baa611-801a-463f-a721-340511554d0d/apply"},{"additionalPlain":"Before you apply, a quick note on your resume\nWe care about the substance of your work and want to make sure we learn as much as we can about your design experience. To help us evaluate your experience accurately, please ensure your resume includes:\nWhat you actually built or worked on — name the real product, subsystem, or hardware (not just \"components\" or \"systems\"). \"Redesigned the bracket mounting the compressor to reduce vibration failures\" tells us far more than \"designed mechanical components.\"\nWhat you personally did, separate from what your team did. If you contributed to a group project, tell us your specific role and contribution.\nThe engineering fundamentals you applied — tie your skills (CAD, FEA, GD&T, thermal/fluid analysis, testing, etc.) to the actual problem you used them on, rather than listing them as standalone skills.\nWhat happened as a result — did it pass validation/testing, resolve a failure, ship to production, and if so, at what volume or scale (prototype quantity, low-rate production, high-volume manufacturing)? This helps us understand whether your experience is with one-off/prototype hardware or product that shipped at scale.\nOne more thing: please don't feel obligated to keep your resume to one page. If accurately describing your relevant projects and contributions takes more space, that's completely fine — we'd rather see the detail than have you compress or omit meaningful work to fit a page limit. \n \nThank You!\n\n\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.\n","additional":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Mechanical Engr","location":"Menlo Park, CA","team":"Mechanical and Structural Systems","allLocations":["Menlo Park, CA"]},"createdAt":1785976593013,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nAbout the Role\nMainspring is seeking a Senior Mechanical Engineer to own significant mechanical engineering projects, subsystems, or technical workstreams for our Linear Generator platform. In this role, you will develop robust mechanical designs, drive projects through the full design cycle, and work cross-functionally to validate and release hardware into production or field use.\nThis role is intended for engineers who have already demonstrated independent ownership of meaningful mechanical design work through multiple design, test, release, or implementation cycles. A strong candidate should be able to own a significant subsystem or project area with limited day-to-day guidance, make sound technical tradeoffs, identify risks early, and drive cross-functional execution.\nCandidates who are still primarily building independence on bounded tasks or single workstreams may be better aligned to a Mechanical Engineer role, while candidates who regularly improve technical decision quality across multiple projects or teams may be better aligned to a Staff Mechanical Engineer role.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking a Senior Mechanical Engineer to own significant mechanical engineering projects, subsystems, or technical workstreams for our Linear Generator platform. In this role, you will develop robust mechanical designs, drive projects through the full design cycle, and work cross-functionally to validate and release hardware into production or field use.
\nThis role is intended for engineers who have already demonstrated independent ownership of meaningful mechanical design work through multiple design, test, release, or implementation cycles. A strong candidate should be able to own a significant subsystem or project area with limited day-to-day guidance, make sound technical tradeoffs, identify risks early, and drive cross-functional execution.
\nCandidates who are still primarily building independence on bounded tasks or single workstreams may be better aligned to a Mechanical Engineer role, while candidates who regularly improve technical decision quality across multiple projects or teams may be better aligned to a Staff Mechanical Engineer role.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking a Senior Mechanical Engineer to own significant mechanical engineering projects, subsystems, or technical workstreams for our Linear Generator platform. In this role, you will develop robust mechanical designs, drive projects through the full design cycle, and work cross-functionally to validate and release hardware into production or field use.
\nThis role is intended for engineers who have already demonstrated independent ownership of meaningful mechanical design work through multiple design, test, release, or implementation cycles. A strong candidate should be able to own a significant subsystem or project area with limited day-to-day guidance, make sound technical tradeoffs, identify risks early, and drive cross-functional execution.
\nCandidates who are still primarily building independence on bounded tasks or single workstreams may be better aligned to a Mechanical Engineer role, while candidates who regularly improve technical decision quality across multiple projects or teams may be better aligned to a Staff Mechanical Engineer role.
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Mechanical Engr","location":"Menlo Park, CA","team":"Electromechanical","allLocations":["Menlo Park, CA"]},"createdAt":1779815197329,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nMainspring is seeking Senior Mechanical Design Engineers with a focus on designing electrical enclosures and cables while improving functionality and system-level performance. In this role, you will lead projects from setting requirements, designing, conducting cross functional reviews, coordinating testing and release to ensure that key electrical subsystems meet challenging technical requirements with a potential for direct reports. Ideal candidates will have a strong combination of technical expertise and the drive to solve complex problems in a collaborative environment.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking Senior Mechanical Design Engineers with a focus on designing electrical enclosures and cables while improving functionality and system-level performance. In this role, you will lead projects from setting requirements, designing, conducting cross functional reviews, coordinating testing and release to ensure that key electrical subsystems meet challenging technical requirements with a potential for direct reports. Ideal candidates will have a strong combination of technical expertise and the drive to solve complex problems in a collaborative environment.
","id":"5a49365b-a0a2-423e-8d66-3945eea64f49","lists":[{"text":"Core Responsibilities","content":"\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking Senior Mechanical Design Engineers with a focus on designing electrical enclosures and cables while improving functionality and system-level performance. In this role, you will lead projects from setting requirements, designing, conducting cross functional reviews, coordinating testing and release to ensure that key electrical subsystems meet challenging technical requirements with a potential for direct reports. Ideal candidates will have a strong combination of technical expertise and the drive to solve complex problems in a collaborative environment.
","descriptionBodyPlain":"Job Overview\nMainspring is seeking Senior Mechanical Design Engineers with a focus on designing electrical enclosures and cables while improving functionality and system-level performance. In this role, you will lead projects from setting requirements, designing, conducting cross functional reviews, coordinating testing and release to ensure that key electrical subsystems meet challenging technical requirements with a potential for direct reports. Ideal candidates will have a strong combination of technical expertise and the drive to solve complex problems in a collaborative environment.\n","hostedUrl":"https://jobs.lever.co/mainspringenergy/5a49365b-a0a2-423e-8d66-3945eea64f49","applyUrl":"https://jobs.lever.co/mainspringenergy/5a49365b-a0a2-423e-8d66-3945eea64f49/apply"},{"additionalPlain":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.\n \nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.\n \nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.\n","additional":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDo you have a knack for design of complex mechanical systems? Have you ever invented a tool or changed a process just to make routine installation or service faster and easier? If you're driven by solving real-world design challenges, especially within state of the art mechanical power generation equipment, then this role is built for you.
\n\n
Mainspring Energy is seeking a Continuous Improvement Engineer with a focus on mechanical design to lead product improvement efforts across our field and production systems. You will work on-site at a contract manufacturer, addressing design and manufacturing issues at their root. You will redesign critical components for durability and ease of service, integrate your findings back into the development process to ensure the long-term reliability and manufacturability of our products. You will support manufacturing with a hands-on approach to solve complex mechanical problems working directly with the product to take measurement, perform testing, and support pilot efforts to develop rework/retrofit processes.
\nYou will redesign critical components for durability and ease of service, and integrate your findings back into the development process to ensure the long-term reliability and manufacturability of our products.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDo you have a knack for design of complex mechanical systems? Have you ever invented a tool or changed a process just to make routine installation or service faster and easier? If you're driven by solving real-world design challenges, especially within state of the art mechanical power generation equipment, then this role is built for you.
\n\n
Mainspring Energy is seeking a Continuous Improvement Engineer with a focus on mechanical design to lead product improvement efforts across our field and production systems. You will work on-site at a contract manufacturer, addressing design and manufacturing issues at their root. You will redesign critical components for durability and ease of service, integrate your findings back into the development process to ensure the long-term reliability and manufacturability of our products. You will support manufacturing with a hands-on approach to solve complex mechanical problems working directly with the product to take measurement, perform testing, and support pilot efforts to develop rework/retrofit processes.
\nYou will redesign critical components for durability and ease of service, and integrate your findings back into the development process to ensure the long-term reliability and manufacturability of our products.
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Hourly","department":"Product Testing","location":"Menlo Park, CA","team":"Product Testing","allLocations":["Menlo Park, CA"]},"createdAt":1773938068525,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Business Development Sales","location":"Remote","team":"Business Development Sales","allLocations":["Remote"]},"createdAt":1788390617019,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking a high-energy, commercially driven Public Power Senior Originator to drive our commercial strategy and transaction execution across Municipalities, Electric Cooperatives, and IOUs.
\nThis is an outward-facing origination role for a natural networker and dealmaker. You will be responsible for bringing an established \"rolodex\" of utility and public power relationships, pitching Mainspring’s value proposition, opening doors at the executive level, and driving high-value, complex transactions from initial handshake to financial close.
\nIf you thrive on the road, love hosting counterparties, excel at translating market tailwinds into executed contracts, and bring deep transaction experience in the power sector, this role is built for you.
\nThis is a remote role with a 100% target bonus. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"department":"Product Testing","location":"Menlo Park, CA","team":"Product Testing","allLocations":["Menlo Park, CA"]},"createdAt":1788464991461,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThe Package R&D Technician will be someone with a solid baseline of experience in fabrication and assembly. They will have had experience in an R&D environment where work instruction may not be fully defined and collaboration with engineers is required to achieve the goals of a prototype build. They will be flexible and team oriented, helping their colleagues where needed to build and learn our product as new designs come out.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDo you love thermodynamics and dynamic system control? Have you thought about thermodynamic cycles as both continuous and discrete dynamic systems? As other industries convert their thermodynamic machines to electromagnetic machines and electrify their platforms, would you like to help generate that clean electricity?
\nLinear generators are a new platform that take advantage of mechanically unconstrained piston motion to cleanly and efficiently oxidize a variety of environmentally friendly fuels with disparate properties (like biogas, hydrogen, and ammonia). The linear generator reaction is close to an ideal Otto cycle, so knowledge and intuition of engine control, thermodynamics, and reaction kinetics are applicable here.
\nMainspring has a high-impact opportunity for a Senior Controls Engineer on our reaction control team to help optimize the system performance by incorporating physics-based models with modern control algorithms to improve reliability, prolong service intervals, and increase power and efficiency.
\nImplement models, algorithms, and continuous-integration (MIL, SIL, PIL) tests in C++
\nDevelop novel fuel, air, compression ratio, and cooling automation and control strategies to improve performance, reliability, and expand the capabilities of the generator to address customer needs
\nDesign, execute, and analyze experiments using Python on virtual or real generators to realize the impact of your work on real generators
\nCollaborate with other controls engineers on designs and architectures
\nDebug sensors, actuators, and subsystems for noise and disturbances and assist in calibration, verification, and validation. Communicate algorithms with block-diagrams, pseudo-code, code, etc.
\nAnalyze complex thermodynamic-mechatronic systems with experimental data and create representative plant models
\nSupport reliability and manufacturing testing of systems under control
\nAnalyze data to assess performance capabilities and inform requirements and design decisions
\nSupport fleet generator operation to enhance reliability and performance
\nDriven and self-directed enthusiastic contributor
\nExcellent communicator with demonstrated collaboration across multidisciplinary teams
\nMultiple years of experience designing, implementing, and testing algorithms in thermodynamic machines - experience with engines is a plus
\nBS + 5 years relevant experience, MS + 3 years, or Ph.D. in mechanical engineering or related degree
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Product Testing","location":"Menlo Park, CA","team":"Product Testing","allLocations":["Menlo Park, CA"]},"createdAt":1778689816058,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nMainspring Energy is growing rapidly and has begun to manufacture its Linear Generators in volume, and reliability is a crucial element to the success of the product. The reliability team is responsible for evaluating design risks, and implementing tests and analyses to quantify and reduce risk to an acceptable level for the target market. Reliability engineers will use tools such as FMEA, HALT and root-cause analysis on a regular basis. The successful candidate is highly organized and communicative, and will thrive in a nimble fast-paced environment that includes product engineering, R&D and manufacturing. \n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Project Delivery","location":"Menlo Park, CA","team":"Project Delivery","allLocations":["Menlo Park, CA"]},"createdAt":1772558417668,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nThe Senior Sales Engineer reports to the Senior Sales Engineering Manager and serves as a senior technical contributor within the sales cycle for solution architecture, estimating, and system integration strategy.\nAs a member of the Sales Engineering team (a subset of Project Delivery), this role exercises independent technical judgment to develop cost-optimized, execution-ready solutions aligned with Mainspring’s linear generator capabilities. The Senior Sales Engineer is accountable for architectural integrity, commercial rigor, and seamless transition from concept through execution.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThe Senior Sales Engineer reports to the Senior Sales Engineering Manager and serves as a senior technical contributor within the sales cycle for solution architecture, estimating, and system integration strategy.
\nAs a member of the Sales Engineering team (a subset of Project Delivery), this role exercises independent technical judgment to develop cost-optimized, execution-ready solutions aligned with Mainspring’s linear generator capabilities. The Senior Sales Engineer is accountable for architectural integrity, commercial rigor, and seamless transition from concept through execution.
","id":"ab8b88d0-4686-463a-9696-f67a2f6f5762","lists":[{"text":"Responsibilities","content":"\nThis position is remote and eligible for a 10% annual bonus. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is remote and eligible for a 10% annual bonus. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Senior Sales Engineer","country":"US","workplaceType":"remote","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThe Senior Sales Engineer reports to the Senior Sales Engineering Manager and serves as a senior technical contributor within the sales cycle for solution architecture, estimating, and system integration strategy.
\nAs a member of the Sales Engineering team (a subset of Project Delivery), this role exercises independent technical judgment to develop cost-optimized, execution-ready solutions aligned with Mainspring’s linear generator capabilities. The Senior Sales Engineer is accountable for architectural integrity, commercial rigor, and seamless transition from concept through execution.
","descriptionBodyPlain":"Job Overview\nThe Senior Sales Engineer reports to the Senior Sales Engineering Manager and serves as a senior technical contributor within the sales cycle for solution architecture, estimating, and system integration strategy.\nAs a member of the Sales Engineering team (a subset of Project Delivery), this role exercises independent technical judgment to develop cost-optimized, execution-ready solutions aligned with Mainspring’s linear generator capabilities. The Senior Sales Engineer is accountable for architectural integrity, commercial rigor, and seamless transition from concept through execution.\n","hostedUrl":"https://jobs.lever.co/mainspringenergy/ab8b88d0-4686-463a-9696-f67a2f6f5762","applyUrl":"https://jobs.lever.co/mainspringenergy/ab8b88d0-4686-463a-9696-f67a2f6f5762/apply"},{"additionalPlain":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.\n","additional":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"On product SW and Sys Engr","location":"Menlo Park, CA","team":"On product SW and Sys Engr","allLocations":["Menlo Park, CA"]},"createdAt":1787596692452,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nDo you enjoy diving into building new automation systems and formulating new testing approaches in areas like cloud computing, networking, IoT with real time operating systems, controls, simulations (MIL, SIL, PIL), and algorithms? We combine this technology with our company vision of building a new category of power that is affordable, reliable, and targeting a net-zero carbon grid. This cornucopia of science and technology will be your daily career at Mainspring.\n\nThis is an opportunity for you to join a world-class engineering team: to build and run automated testing systems to ensure the quality of the product. This is an exciting opportunity to become part of a rapidly growing engineering team.\n\nIn this role. you will have significant influence over the quality of the product, engage with developers to understand new features and technologies, and create innovative automated testing solutions within tight requirements to solve complex scenarios with multiple components.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDo you enjoy diving into building new automation systems and formulating new testing approaches in areas like cloud computing, networking, IoT with real time operating systems, controls, simulations (MIL, SIL, PIL), and algorithms? We combine this technology with our company vision of building a new category of power that is affordable, reliable, and targeting a net-zero carbon grid. This cornucopia of science and technology will be your daily career at Mainspring.
\n
This is an opportunity for you to join a world-class engineering team: to build and run automated testing systems to ensure the quality of the product. This is an exciting opportunity to become part of a rapidly growing engineering team.
In this role. you will have significant influence over the quality of the product, engage with developers to understand new features and technologies, and create innovative automated testing solutions within tight requirements to solve complex scenarios with multiple components.
This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDo you enjoy diving into building new automation systems and formulating new testing approaches in areas like cloud computing, networking, IoT with real time operating systems, controls, simulations (MIL, SIL, PIL), and algorithms? We combine this technology with our company vision of building a new category of power that is affordable, reliable, and targeting a net-zero carbon grid. This cornucopia of science and technology will be your daily career at Mainspring.
\n
This is an opportunity for you to join a world-class engineering team: to build and run automated testing systems to ensure the quality of the product. This is an exciting opportunity to become part of a rapidly growing engineering team.
In this role. you will have significant influence over the quality of the product, engage with developers to understand new features and technologies, and create innovative automated testing solutions within tight requirements to solve complex scenarios with multiple components.
Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Off product SW and Data Sys Engr","location":"Menlo Park, CA","team":"Off product SW and Data Sys Engr","allLocations":["Menlo Park, CA"]},"createdAt":1786478187816,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nAs a Senior Engineering Manager at Mainspring, you will lead a high-performing team in a fast-paced startup environment. You will act as a bridge between complex software ecosystems—including Cloud, Embedded, and Controls—and the physical world of mechanical and electrical engineering. This role is ideal for a leader who thrives on shifting priorities and is eager to immerse themselves in deep technical sessions with multi-disciplinary partners to build the future of the net-zero carbon grid.
\nCross-Functional Leadership: Lead the design and delivery of integrated software solutions, partnering closely with Cloud, Embedded, and Controls teams to ensure seamless system performance
\nStrong Execution Skills: Navigate a high-velocity environment by adjudicating technical trade-offs, driving project accountability, and maintaining focus to meet critical company milestones and product roadmaps
\nInterdisciplinary Collaboration: Participate in deep-dive technical sessions with embedded and hardware engineering partners, fostering a culture of mutual learning and integrated design excellence
\nTeam Development: Recruit, mentor, and scale an engineering team capable of solving complex problems in the IoT, Automotive, or Energy sectors
\nOperational Discipline: Champion scalable engineering workflows, drive bug triage, and manage validation planning to protect delivery timelines while maintaining high technical rigor
\nStrategic Planning & Alignment: Lead the planning and alignment of software roadmaps, ensuring they are synchronized with broader business objectives
\nExecutive Communication: Provide regular, concise updates to executive leadership regarding project status, roadmap milestones, and technical risks
\nTechnical Breadth: Strong foundation in Cloud architectures (AWS or GCP) and Embedded software, with the technical fluency to bridge these domains and effectively lead cross-functional architectural discussions
\nTeam Leadership: Proven track record of building and leading high-performing, multi-disciplinary teams of full-stack engineers. You have successfully mentored and scaled teams that manage the entire device-to-cloud lifecycle, ensuring robust, scalable, and secure connectivity between edge devices and backend systems
\nManagement at Scale: Experience managing multiple scrum teams, including distributed or hybrid workforces across multiple timezones, with a focus on fostering communication and alignment in a complex, multi-site environment
\nIndustry Experience: Proven track record in the IoT, Automotive, or Energy/Utility industries, with a deep understanding of the unique challenges in these sectors
\nStartup Mentality: Demonstrated ability to operate effectively in fast-paced environments with shifting priorities and a focus on high-velocity delivery
\nEducational Background: Degree in Computer Science, Electrical Engineering, Mechanical Engineering, or a related technical field
\nCollaborative Mindset: A proactive desire to learn from and work with hardware disciplines (Mechanical/Electrical) to achieve holistic product goals
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nAs we scale our deployments from Behind-The-Meter (BTM) commercial microgrids to utility-scale Front-of-the-Meter (FTM) power plants and data centers, we are expanding our system boundaries to provide fully integrated, turn-key power solutions.
\nThis role sits at the intersection of power systems engineering, cross-functional hardware integration, and external vendor management. You will own the technical architecture and vision of how Mainspring power plant sites are built, including full ownership of the modular power skids. This includes ownership of the broader site: how generators, inverters, skids, and energy storage come together as a complete and configurable power solution. You will act as the technical anchor, translating high-level single-line diagrams and architectural concepts into robust, mass-manufacturable modular skid-based products. The ideal candidate will bridge the gap between initial concept and factory-ready design by driving requirements across internal multidisciplinary teams (Electrical, Mechanical, Project Delivery, Software Controls, and Supply Chain) while managing critical 3rd-party design and manufacturing partners to scale the product line.
"},{"text":"Responsibilities","content":"Take full engineering ownership of Mainspring's next-generation modular power integration skids, actively translating high-level system architectures into fully commercialized, production-ready assets by driving the design from initial concept through validation and final manufacturing release
\nDefine and own the skid-level power topology for utility-scale and data center sites, ensuring seamless electrical and physical integration between Linear Generators, central inverters, step-up transformers, switchgear, and energy storage systems (BESS)
\nOwn detailed skid engineering decisions: hardware selection, spatial layout, thermal management, environmental protection (NEMA/IP rating, seismic/wind loading as applicable), manufacturability, and field serviceability
\nPartner actively with internal electrical engineering, mechanical engineering, project delivery, operations, software controls, and supply chain teams to extract, synthesize, and freeze comprehensive system requirements
\nDirect and manage third-party design firms and external manufacturers, serving as the primary technical point of contact to ensure engineering and manufacturing outputs align with technical specifications and quality standards
\nDrive the scalability and production readiness of larger skid configurations alongside manufacturing suppliers, ensuring the architectural design leverages standardized hardware, reduces site-level installation labor, and is optimized for high-volume replication
\nOwn the skid's cost target and drive design-to-cost trade-offs across hardware selection, supplier strategy, and configuration options
\nDevelop a site design configuration tool that specifies the optimal inverter and skid configuration based upon customer site requirements
\nBachelor's or advanced degree in Electrical Engineering or a related field
\n18+ years of direct experience productizing complex, multi-disciplinary industrial systems
\nDeep technical knowledge of power conversion systems, including medium-voltage (MV) step-up transformers (12.47kV–35kV), central inverters, switchgear, vacuum circuit breakers, protective relays, and high-current busbar/cabling systems
\nDemonstrated experience driving the engineering lifecycle of modular hardware systems, including a strong grasp of design-to-cost principles, supplier capacity scaling, field reliability, and configuration control
\nStrong cross-functional leadership skills with a track record of translating diverse technical requirements from electrical, mechanical, and operations teams into a cohesive, manufacturing-ready system design
\nDemonstrated success directing 3rd-party design, engineering, or Contract Manufacturing (CM) partners from initial concept through to sustained volume production
\nStrong working knowledge of grid interconnection standards, utility protection schemes, and safety/compliance frameworks (e.g., IEEE 1547, UL 1741 SB/SA, NFPA 70/NEC, NFPA 855)
\nSkilled in SCADA integration, industrial networking, and designing or certifying control systems to UL 508/508A standards
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Mechanical Engr","location":"Menlo Park, CA","team":"Mechanical and Structural Systems","allLocations":["Menlo Park, CA"]},"createdAt":1785977538285,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nAbout the Role\nMainspring is seeking a Senior Staff Mechanical Engineer to shape technical direction across multiple teams, systems, or major program areas within our Linear Generator platform. In this role, you will guide system-level design decisions, resolve complex cross-functional tradeoffs, identify risks that may not be visible within individual projects, and create technical leverage through architecture, standards, validation strategy, and high-quality decision-making.\nThis role is intended for engineers who have already demonstrated advanced technical ownership within a major subsystem, team, or technical area and are now ready to influence outcomes across a broader part of the organization. A strong candidate should be able to operate with high autonomy, frame ambiguous system-level problems, align stakeholders, improve technical decision quality across projects, and help teams avoid rework caused by weak assumptions, incomplete validation, or missed integration risks.\nCandidates who primarily provide technical leadership within one team, subsystem, or technical area may be better aligned to a Staff Mechanical Engineer role, while candidates who serve as a company-level technical authority in a critical domain may be better aligned to a Principal Mechanical Engineer role.\n\n\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking a Senior Staff Mechanical Engineer to shape technical direction across multiple teams, systems, or major program areas within our Linear Generator platform. In this role, you will guide system-level design decisions, resolve complex cross-functional tradeoffs, identify risks that may not be visible within individual projects, and create technical leverage through architecture, standards, validation strategy, and high-quality decision-making.
\nThis role is intended for engineers who have already demonstrated advanced technical ownership within a major subsystem, team, or technical area and are now ready to influence outcomes across a broader part of the organization. A strong candidate should be able to operate with high autonomy, frame ambiguous system-level problems, align stakeholders, improve technical decision quality across projects, and help teams avoid rework caused by weak assumptions, incomplete validation, or missed integration risks.
\nCandidates who primarily provide technical leadership within one team, subsystem, or technical area may be better aligned to a Staff Mechanical Engineer role, while candidates who serve as a company-level technical authority in a critical domain may be better aligned to a Principal Mechanical Engineer role.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking a Senior Staff Mechanical Engineer to shape technical direction across multiple teams, systems, or major program areas within our Linear Generator platform. In this role, you will guide system-level design decisions, resolve complex cross-functional tradeoffs, identify risks that may not be visible within individual projects, and create technical leverage through architecture, standards, validation strategy, and high-quality decision-making.
\nThis role is intended for engineers who have already demonstrated advanced technical ownership within a major subsystem, team, or technical area and are now ready to influence outcomes across a broader part of the organization. A strong candidate should be able to operate with high autonomy, frame ambiguous system-level problems, align stakeholders, improve technical decision quality across projects, and help teams avoid rework caused by weak assumptions, incomplete validation, or missed integration risks.
\nCandidates who primarily provide technical leadership within one team, subsystem, or technical area may be better aligned to a Staff Mechanical Engineer role, while candidates who serve as a company-level technical authority in a critical domain may be better aligned to a Principal Mechanical Engineer role.
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Mechanical Engr","location":"Menlo Park, CA","team":"Electromechanical","allLocations":["Menlo Park, CA"]},"createdAt":1741213979012,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nMainspring is looking for a Senior Staff Mechanical Engineer — Electromechanical to lead the design and integration of electrical enclosures, busbars, and cable systems for our next-generation energy platforms.\nThis is a highly visible technical leadership role focused on solving difficult real-world engineering problems across power electronics packaging, harsh-environment durability, manufacturability, and system integration. You’ll help shape core product architecture while working on systems deployed across demanding operating environments ranging from coastal and desert conditions to future megawatt-scale applications.\nWe’re looking for an engineer who understands how electrical and mechanical systems behave in the real world — and can drive robust electromechanical solutions from concept through production.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is looking for a Senior Staff Mechanical Engineer — Electromechanical to lead the design and integration of electrical enclosures, busbars, and cable systems for our next-generation energy platforms.
\nThis is a highly visible technical leadership role focused on solving difficult real-world engineering problems across power electronics packaging, harsh-environment durability, manufacturability, and system integration. You’ll help shape core product architecture while working on systems deployed across demanding operating environments ranging from coastal and desert conditions to future megawatt-scale applications.
\nWe’re looking for an engineer who understands how electrical and mechanical systems behave in the real world — and can drive robust electromechanical solutions from concept through production.
","id":"15c64c61-49e2-41e3-b536-944736e643b0","lists":[{"text":"Responsibilities","content":"\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Senior Staff Mechanical Engineer - Electromechanical","country":"US","workplaceType":"onsite","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is looking for a Senior Staff Mechanical Engineer — Electromechanical to lead the design and integration of electrical enclosures, busbars, and cable systems for our next-generation energy platforms.
\nThis is a highly visible technical leadership role focused on solving difficult real-world engineering problems across power electronics packaging, harsh-environment durability, manufacturability, and system integration. You’ll help shape core product architecture while working on systems deployed across demanding operating environments ranging from coastal and desert conditions to future megawatt-scale applications.
\nWe’re looking for an engineer who understands how electrical and mechanical systems behave in the real world — and can drive robust electromechanical solutions from concept through production.
","descriptionBodyPlain":"Job Overview\nMainspring is looking for a Senior Staff Mechanical Engineer — Electromechanical to lead the design and integration of electrical enclosures, busbars, and cable systems for our next-generation energy platforms.\nThis is a highly visible technical leadership role focused on solving difficult real-world engineering problems across power electronics packaging, harsh-environment durability, manufacturability, and system integration. You’ll help shape core product architecture while working on systems deployed across demanding operating environments ranging from coastal and desert conditions to future megawatt-scale applications.\nWe’re looking for an engineer who understands how electrical and mechanical systems behave in the real world — and can drive robust electromechanical solutions from concept through production.\n","hostedUrl":"https://jobs.lever.co/mainspringenergy/15c64c61-49e2-41e3-b536-944736e643b0","applyUrl":"https://jobs.lever.co/mainspringenergy/15c64c61-49e2-41e3-b536-944736e643b0/apply"},{"additionalPlain":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.\n","additional":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Operational Tech and Sys","location":"Menlo Park, CA","team":"Operational Tech and Sys","allLocations":["Menlo Park, CA"]},"createdAt":1769638931398,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nAre you someone who thrives on bringing clarity and structure to complex, fast-changing environments? Do you excel at leading cross-functional teams through technically challenging programs with real business impact?\n\nMainspring Energy is seeking a Senior Staff Technical Program Manager to lead critical product development initiatives for our Linear Generator—from early program definition through execution and successful transition to high-volume manufacturing.\n\nIn this role, you will own complex, multi-disciplinary programs, drive alignment across engineering and operations teams, surface risks early, and enable informed decision-making at the executive level.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThis position is hybrid (based out of Menlo Park, CA). The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is hybrid (based out of Menlo Park, CA). The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Senior Staff Technical Program Manager","country":"US","workplaceType":"hybrid","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Supply Chain","location":"Menlo Park, CA","team":"Supply Chain","allLocations":["Menlo Park, CA"]},"createdAt":1785538270640,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is rapidly scaling manufacturing to meet growing customer demand and accelerate deployment of the world's most flexible and adaptable onsite power generation platform. As we expand production capacity and strengthen our supply chain, our contract manufacturing partners play a critical role in Mainspring's ability to deliver on its commitments to customers, investors, and stakeholders.
\nThe leader of Contract Manufacturing & Strategic Partnerships will set the strategy and operating model for Mainspring's contract manufacturing network and serve as the executive owner of its most critical manufacturing partnerships. This leader will translate Mainspring's product, demand, and growth roadmaps into multi-year partner strategies that secure capacity, improve cost, quality, delivery, and inventory performance, and protect business continuity.
\nThis role is accountable for the overall health and performance of the contract manufacturing portfolio. The leader will establish governance and executive business-review mechanisms, lead complex commercial negotiations, guide manufacturing readiness and production ramps, and drive rapid resolution of significant operational, quality, delivery, and relationship issues. The role will work closely with Operations, Supply Chain, Engineering, Quality, Finance, Legal, Product Development, and Executive Leadership and will influence decisions across organizational boundaries.
\nConsistent with Mainspring's, this leader will build scalable processes and organizational capability, develop team members and future leaders, and operate with a high degree of autonomy. Success will be measured by partner performance, supply continuity, financial results, launch and ramp execution, risk reduction, and the strength of strategic relationships that enable Mainspring's long-term manufacturing strategy.
\nStrategic Leadership: Execute the multi-year contract manufacturing strategy, ensuring full alignment with product roadmaps, capacity requirements, and company growth objectives.
\nPortfolio Management: Oversee the partner network, including strategic selection, allocation, and exit strategies based on capability, risk, and long-term fit.
\nGovernance & MOS: Establish the organizational structure, decision rights, and Management Operating System (MOS) required to manage the contract manufacturing and related portfolio at scale.
\nComplex Negotiations: Lead executive-level commercial negotiations (MSAs, SOWs, pricing, tooling) to protect business interests and risks while fostering sustainable, long-term partnerships
\nFinancial & Cost Strategy: Partner with executive leadership, Finance and Supply Chain to own cost performance, value engineering, and total-cost-of-ownership (TCO) initiatives as it relates to contract manufacturing. Clear ownership of contract manufacturers’ costs and pricing, driving transparency and accountability where necessary
\nOperational Readiness: Coordinate/support cross-functional readiness for), pilot builds, production ramps, and sustained volume manufacturing at our contract manufacturers
\nPerformance Excellence: Establish rigorous KPIs (safety, quality, yield, delivery) and drive structured root-cause analysis and continuous improvement when performance falls below expectations
\nRisk Mitigation: Proactively identify and mitigate supply chain and contract manufacturing operational, and geopolitical risks, ensuring robust business-continuity and contingency planning
\nExecutive Reporting & Stakeholder Management: Provide concise, decision-oriented updates to leadership regarding performance, tradeoffs, and required investments, while driving cross-functional alignment
\nTeam Leadership: Build, coach, and develop a high-performing team, fostering clear accountability and strengthening organizational capability
\nBachelor's degree in Engineering, Supply Chain, Business, Finance, Operations, or related field
\n10+ years in complex contract manufacturing, global supply chain, and/or operations, with at least 10 years specifically managing high-impact strategic supplier or CM portfolios
\n5+ years of people leadership experience, with a proven track record of building high-performing teams and developing future leaders
\nDemonstrated success in defining and executing multi-year contract manufacturing strategies that align with product roadmaps and company growth objectives
\nDeep understanding of the full manufacturing lifecycle, including production ramps, manufacturing transfers, and continuous improvement (safety, quality, yield, delivery)
\nExpertise leading complex, high business impact, executive-level negotiations (MSAs, SOWs, pricing, tooling) and managing financial performance, including TCO modeling, budgeting, and investment analysis
\nProven ability to lead through influence across organizational boundaries (Finance, Engineering, Quality) and drive alignment with internal and external stakeholders
\nExperience within high-growth industrial technology, energy, automotive, or similar complex hardware environments is highly preferred
\nSuccess in this role requires:
\n\nEnterprise-level ownership and accountability for measurable improvements in cost, quality, delivery, capacity, risk, and partnership performance
\nAbility to set strategy and translate it into an executable operating model, roadmap, and performance cadence
\nExecutive presence and credibility with internal leaders and external manufacturing partners
\nBalanced strategic thinking and hands-on operational leadership
\nStrong judgment in complex commercial, operational, and relationship decisions
\nProactive communication, disciplined escalation, and clear decision recommendations
\nAbility to build/influence organizational capability, develop leaders, and create durable processes that scale
\nConfidence leading difficult conversations, negotiations, performance recovery, and change
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO stock options + benefits.
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Supply Chain","location":"Menlo Park, CA","team":"Supply Chain","allLocations":["Menlo Park, CA"]},"createdAt":1788899999706,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nYou will own the supply chain side of our electrical R&D and NPI projects, from first prototype through production ramp. You also own the purchasing for special projects, including R&D work and PCBA and e-box prototyping, where speed, new suppliers and close engineering support matter most.
\nYou are the bridge between Electrical Engineering, the TPM, SQE, Commodity Managers and suppliers, keeping suppliers accountable on cost, schedule and quality. Once projects reach production, you hand off to the buyer/planner team.
\nProject Management
\n\nOwn supply chain project management for electrical R&D/NPI projects: plans, milestones, gate reviews, budgets and build readiness
\nPartner with the Electrical TPM on supplier-facing EC execution: BOM data, DFM feedback, change quotes, cut-in timing, obsolescence and disposition
\nOwn material readiness and cost impact: flag lead-time, shortage and capacity risks early and drive mitigation before they hit the build schedule
\nSpecial Projects Purchasing
\n\nOwn end-to-end purchasing for special projects (R&D, PCBA and e-box prototypes): RFQs, POs, expedites and delivery follow-through
\nNegotiate pricing, NRE, tooling and lead times for prototype and pilot quantities, with the path to volume in mind
\nQualify and onboard new EMS/SMT, harness and box-build suppliers with Commodity Management and SQE
\nTransition & Reporting
\n\nHand off cleanly to planning, buyers and CMs for production, with qualified suppliers, agreed terms and accurate ERP data
\nKeep project tracking and dashboards current for leadership and Commodity Managers
\nSupport supplier performance reporting and QBRs, and flex onto cross-commodity projects when workload allows
\nBachelor's degree in Engineering, Supply Chain, Business or a related field
\n6+ years in supply chain program management, NPI purchasing or sourcing in hardware manufacturing
\nHands-on experience with PCBAs/SMT, cable and harness manufacturing, and e-box/box-build
\nTrack record running RFQs and negotiating with EMS, harness and box-build suppliers
\nWorking knowledge of NPI lifecycles and EC processes (CCBs, BOM/EPN management)
\nRuns multiple projects independently under shifting priorities and drives decisions without formal authority
\nStrong communicator, comfortable with ERP/MRP, project tracking tools and dashboards
\nExperience with contract manufacturers and CM transitions
\nPower electronics or complex electromechanical hardware background
\nPMP/CAPM or APICS/ASCM (CPIM or CSCP); AI or analytics tools for reporting automation
\nExperience with PLM system
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Mechanical Engr","location":"Menlo Park, CA","team":"Mechanical Engr","allLocations":["Menlo Park, CA"]},"createdAt":1787078515648,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nWe have a high-impact opportunity for a Materials and Process Engineer who wants to join a world-class engineering team and help scale production of the Linear Generator. The materials and process team at Mainspring Energy works on complex development projects which are at the intersection of properties, performance and processing of a wide range of materials – non ferrous, ferrous, coatings, graphite, polymers etc.
\nIn this role, you will develop reliable cost effective materials solutions and manage existing solutions through validation testing, process development and deployment on an actual part/subassembly. This is a great opportunity to be part of cross functional projects and collaborate with multiple teams such as Supply chain, Quality, Reliability, Design and Production.
\nLead independent process development and material validation of cast metal components and other mechanical systems in the Linear Generator
\nCollaborate with other members of the Materials and Engineering teams to characterize material properties, identify failure modes, and execute validation tests to meet reliability requirements
\nCreate, develop, and optimize material and process specifications related to castings and other mechanical components.
\nWrite specifications, process control, and quality control plans for cast and other mechanical components
\nCollaborate with other teams such as mechanical design, supply chain and quality to qualify processes and establish key process controls at manufacturing locations, including casting suppliers
\nParticipate in FMEA for design, process, and maintenance
\nSupport the Materials and Process team with failure analysis and process development projects across multiple materials and process areas (e.g., coatings, polymers, graphite, joining/welding)
\nBS in Materials Science/Engineering or Mechanical Engineering
\nMS + 5 years or PhD + 3 years of industry experience
\nPrior experience with metal casting processes (e.g., die casting, investment casting, sand casting) and their impact on part properties and performance is strongly preferred
\nFundamental understanding of properties and performance of engineering materials, and basic knowledge of structure-property relationships
\nBroader exposure to other materials and process areas — such as coatings, polymers, graphite, forging, or joining/welding — is a plus
\nExperience with volume production of metal or cast components is highly preferred
\nWorking knowledge and experience with FMEA (Failure Mode and Effects Analysis)
\nDemonstrated experience with statistical data analysis and reporting (Matlab/Python, Google Sheets/Excel, Weibull++, etc.)
\nExcellent communication skills, adaptable self-starter, enjoys collaboration in a fast-paced environment
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"On product SW and Sys Engr","location":"Menlo Park, CA","team":"On product SW and Sys Engr","allLocations":["Menlo Park, CA"]},"createdAt":1785965975509,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDo you have a favorite upwinding technique for hyperbolic PDEs? We have a high impact opportunity for a CFD Modeling Engineer to support the design, test, and manufacture of reliable and efficient linear generators at Mainspring Energy. On the system modeling and simulation team, you will have a central role in refining the way generators are designed through detailed fluid dynamic and thermochemical analysis, either for the direct assessment of proposed designs or to inform lower order models that describe system behavior.
\nThe ideal candidate can break down complex flow and multidimensional phenomena into fundamental behavior, enabling actionable feedback to improve our product.
\nAs part of this role, you will:
\n\nRun commercial CFD software to analyze transient gas flow, chemical kinetics, and heat transfer. To execute this, you will need to:
\n\nManage computational resources on local hardware and on the cloud (AWS / GCP)
\nWork with mechanical engineers to generate appropriate 3D models from CAD (Solidworks) suitable for mesh generation. Extract fluid volumes suitable for computational analysis. Generate, refine, and debug the mesh to achieve a stable and accurate simulation
\nSelect appropriate boundary conditions and domain models to describe the phenomena to be examined
\nShepard the solver through the computational process, managing and debugging crashes or other roadblocks on the path to a converged solution
\nAnalyze and distill the detailed 3D domain results to communicate with the simulation stakeholders. Generate images and videos that highlight key phenomena
\nUnderstand and explain CFD principles to the team, knowing and communicating why different models or solver settings are applied within a given CFD package
\nGenerate test plans to validate observations gleaned from CFD simulations, or to get required boundary conditions needed to appropriately define a model. Oversee the execution of those plans on the generator with support from the test team
\nAnalyze test data to compare to the results of CFD and system simulations
\nGenerate lower order models for use in system-level simulations. Run system-level models to quantify the impact of design choices on generator performance
\nWrite code in C++ and python to automate CFD execution processes, improve system-level models, and couple lower order models to CFD boundary conditions while following software best practices and producing reliable, repeatable, and shareable code
\nParticipate in peer review of software written in support of modeling work throughout the team
\nGenerate written documentation of simulation results (presentations, reports, etc) for a variety of audiences at Mainspring
\nYour success in this role will be instrumental to unlocking power and efficiency improvements in Mainspring’s linear generators while maintaining near-zero emissions. At the root of our core mission, you will be collaborating across technical domains, frequently integrating with executives and other leaders of software, mechanical design, and product development.
\nGraduate-level engineering degree (Mechanical, Aerospace, Electrical, Chemical, etc) with 10+ years experience in Computational Fluid Dynamics and its applied mathematical foundations
\n2+ years experience with at least one commercial CFD package (Fluent, Star-CCM, Converge, etc) and one commercial CAD package (Solidworks, Catia, etc)
\nExperience generating and validating custom models of varying fidelity (0D through 3D) in at least one programming language, e.g. C/C++, Python, Julia, etc
\nThis position is a hybrid position (onsite + remote) at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"On product SW and Sys Engr","location":"Menlo Park, CA","team":"On product SW and Sys Engr","allLocations":["Menlo Park, CA"]},"createdAt":1776294495049,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nAs a Staff Controls and Automation Engineer, you will be the technical lead for the entire lifecycle of control and execution systems, from initial concept to scalable manufacturing deployment. This involves architecting intelligent manufacturing systems and managing them through feasibility assessments and production.\n \nA key focus is on developing automation solutions that effectively balance demanding deterministic control needs with modern software engineering practices. This includes emphasizing modular design, utilizing version control, conducting code reviews, and enforcing disciplined change management to significantly improve the development, testing, and deployment of control software. While the role is grounded in traditional industrial automation, there is a strong drive for this modernization.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Electrical Engr","location":"Menlo Park, CA","team":"Electrical Engineering","allLocations":["Menlo Park, CA"]},"createdAt":1770853640787,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a talented team of electrical engineers that own hardware design from initial concept through test and manufacturing.\nWe have a highly impactful opportunity for an electrical engineer to be part of the team that is responsible for the Linear Generator’s power delivery and integration into customers’ power systems. You will own the selection, integration, configuration, and performance of commercial off-the-shelf inverters used in Mainspring’s Linear Generator System.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a talented team of electrical engineers that own hardware design from initial concept through test and manufacturing.
\nWe have a highly impactful opportunity for an electrical engineer to be part of the team that is responsible for the Linear Generator’s power delivery and integration into customers’ power systems. You will own the selection, integration, configuration, and performance of commercial off-the-shelf inverters used in Mainspring’s Linear Generator System.
","id":"bab2ac26-09c8-49c6-bf28-1efd619163d2","lists":[{"text":"Responsibilities","content":"Lead the selection, sizing, and configuration of industrial grid-interactive off-the-shelf (OTS) inverters in the 100kW to 1MW+ range
\nManage Corrective and Preventive Action (CAPA) root-cause investigations serve as the principal technical escalation authority for severe grid stability and power quality issues
\nArchitect next-generation power delivery topologies, focusing on grid-interactive inverter selection and 1500 Vdc bus integration
\nArchitect and lead the strategy for microgrid integration, black-start operational sequences, and grid-edge compliance (CA Rule 21, IEEE 1547-2018, low-voltage ride-through) across the product line
\nDevelop qualification testing and integration for next-generation power system architectures
\nLead cross-functional stage-gate design reviews across mechanical, thermal, controls, test, and software engineering teams to drive system-level alignment, performance, safety, and manufacturability
\nBachelor's or Master's degree in Electrical Engineering or a related field.
\n8+ years of hands-on experience integrating industrial power conversion hardware or energy storage systems
\nExpert-level troubleshooting authority for complex AC/DC power systems, with demonstrated mastery in waveform analysis, fault diagnosis, power quality, and transient grid-stability resolution.
\nExtensive hands-on expertise operating in high-voltage lab and field environments (400–800 Vac, up to 1500 Vdc), with a strong track record of championing NFPA 70E and Lockout/Tagout (LOTO) best practices
\nDeep technical proficiency in architecting and debugging industrial communication protocols (Modbus TCP/RTU, CANbus, SunSpec) for power electronics control
\nProven technical leadership in driving multi-disciplinary problem resolution, leading formal Corrective and Preventive Action (CAPA) programs, and mentoring engineers through the full product development lifecycle
\nDemonstrated experience in the development, deployment, or optimization of grid-scale energy projects
\nExpertise in Protection & Control (P&C), including programming SEL or Basler relays and coordinating with utility engineers for grid interconnection
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Staff Electrical Engineer - Inverter & Grid Integration","country":"US","workplaceType":"onsite","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a talented team of electrical engineers that own hardware design from initial concept through test and manufacturing.
\nWe have a highly impactful opportunity for an electrical engineer to be part of the team that is responsible for the Linear Generator’s power delivery and integration into customers’ power systems. You will own the selection, integration, configuration, and performance of commercial off-the-shelf inverters used in Mainspring’s Linear Generator System.
","descriptionBodyPlain":"Job Overview\nThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a talented team of electrical engineers that own hardware design from initial concept through test and manufacturing.\nWe have a highly impactful opportunity for an electrical engineer to be part of the team that is responsible for the Linear Generator’s power delivery and integration into customers’ power systems. You will own the selection, integration, configuration, and performance of commercial off-the-shelf inverters used in Mainspring’s Linear Generator System.\n","hostedUrl":"https://jobs.lever.co/mainspringenergy/bab2ac26-09c8-49c6-bf28-1efd619163d2","applyUrl":"https://jobs.lever.co/mainspringenergy/bab2ac26-09c8-49c6-bf28-1efd619163d2/apply"},{"additionalPlain":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.\n","additional":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Electrical Engr","location":"Menlo Park, CA","team":"Electrical Engineering","allLocations":["Menlo Park, CA"]},"createdAt":1775599455209,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a talented team of electrical engineers that own hardware design from initial concept through test and manufacturing.\n\nWe have a high impact opportunity for a power electronics engineer to shape the future of the Linear Generator’s power electronics systems. \n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a talented team of electrical engineers that own hardware design from initial concept through test and manufacturing.
We have a high impact opportunity for a power electronics engineer to shape the future of the Linear Generator’s power electronics systems.
This role is an amazing growth opportunity, where you will work closely with and learn from a small team of top-caliber power electronics engineers. Working together, you will jointly own all the custom power electronics within our system.
\nThis is a onsite position at our Menlo Park HQ. It will require you to be onsite as required to perform testing, troubleshooting, manufacturing support, etc. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This role is an amazing growth opportunity, where you will work closely with and learn from a small team of top-caliber power electronics engineers. Working together, you will jointly own all the custom power electronics within our system.\nThis is a onsite position at our Menlo Park HQ. It will require you to be onsite as required to perform testing, troubleshooting, manufacturing support, etc. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Staff Electrical Engineer - Power Electronics","country":"US","workplaceType":"hybrid","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThe technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a talented team of electrical engineers that own hardware design from initial concept through test and manufacturing.
We have a high impact opportunity for a power electronics engineer to shape the future of the Linear Generator’s power electronics systems.
As we scale our deployments from Behind-The-Meter (BTM) commercial microgrids to utility-scale Front-of-the-Meter (FTM) power plants and data centers, we are expanding our system boundaries to provide fully integrated, turn-key power solutions.
\nThis role sits at the intersection of power systems engineering, cross-functional hardware integration, and external vendor management. You will own the technical architecture and vision of how Mainspring power plant sites are built, including full ownership of the modular power skids. This includes ownership of the broader site: how generators, inverters, skids, and energy storage come together as a complete and configurable power solution. You will act as the technical anchor, translating high-level single-line diagrams and architectural concepts into robust, mass-manufacturable modular skid-based products. The ideal candidate will bridge the gap between initial concept and factory-ready design by driving requirements across internal multidisciplinary teams (Electrical, Mechanical, Project Delivery, Software Controls, and Supply Chain) while managing critical 3rd-party design and manufacturing partners to scale the product line.
"},{"text":"Responsibilities","content":"Take full engineering ownership of Mainspring's next-generation modular power integration skids, actively translating high-level system architectures into fully commercialized, production-ready assets by driving the design from initial concept through validation and final manufacturing release
\nDefine and own the skid-level power topology for utility-scale and data center sites, ensuring seamless electrical and physical integration between Linear Generators, central inverters, step-up transformers, switchgear, and energy storage systems (BESS)
\nOwn detailed skid engineering decisions: hardware selection, spatial layout, thermal management, environmental protection (NEMA/IP rating, seismic/wind loading as applicable), manufacturability, and field serviceability
\nPartner actively with internal electrical engineering, mechanical engineering, project delivery, operations, software controls, and supply chain teams to extract, synthesize, and freeze comprehensive system requirements
\nDirect and manage third-party design firms and external manufacturers, serving as the primary technical point of contact to ensure engineering and manufacturing outputs align with technical specifications and quality standards
\nDrive the scalability and production readiness of larger skid configurations alongside manufacturing suppliers, ensuring the architectural design leverages standardized hardware, reduces site-level installation labor, and is optimized for high-volume replication
\nOwn the skid's cost target and drive design-to-cost trade-offs across hardware selection, supplier strategy, and configuration options
\nDevelop a site design configuration tool that specifies the optimal inverter and skid configuration based upon customer site requirements
\nBachelor's or advanced degree in Electrical Engineering or a related field
\n12+ years of direct experience productizing complex, multi-disciplinary industrial systems
\nDeep technical knowledge of power conversion systems, including medium-voltage (MV) step-up transformers (12.47kV–35kV), central inverters, switchgear, vacuum circuit breakers, protective relays, and high-current busbar/cabling systems
\nDemonstrated experience driving the engineering lifecycle of modular hardware systems, including a strong grasp of design-to-cost principles, supplier capacity scaling, field reliability, and configuration control
\nStrong cross-functional leadership skills with a track record of translating diverse technical requirements from electrical, mechanical, and operations teams into a cohesive, manufacturing-ready system design
\nDemonstrated success directing 3rd-party design, engineering, or Contract Manufacturing (CM) partners from initial concept through to sustained volume production
\nStrong working knowledge of grid interconnection standards, utility protection schemes, and safety/compliance frameworks (e.g., IEEE 1547, UL 1741 SB/SA, NFPA 70/NEC, NFPA 855)
\nSkilled in SCADA integration, industrial networking, and designing or certifying control systems to UL 508/508A standards
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Electrical Engr","location":"Menlo Park, CA","team":"Electrical Engineering","allLocations":["Menlo Park, CA"]},"createdAt":1786742527633,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nAre you an innovative hardware leader who thrives on driving cutting-edge electronics from initial concept to production? Do you prefer the challenge of owning complex, low-voltage control systems and guiding cross-functional teams through technical hurdles over routine, single-phase component tweaking? Mainspring Energy is looking for a highly autonomous, intellectually curious, and influential Senior Electrical Engineer, Electronics Design to join our core Electrical Engineering organization. Unlike traditional electrical design roles confined to narrow subsystems or isolated schematic capture, this is a high-impact engineering position where you will take end-to-end ownership and act as the technical lead for the critical electrical hardware and PCBA designs that power our revolutionary Linear Generator. Working alongside a world-class team of multidisciplinary engineers, you will have the execution autonomy to design advanced low-voltage (< 60V) systems, spearhead complex hardware validation and technical reviews, and directly shape the future of our power generation control architecture.
\nMainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These electrical hardware systems are designed by a talented team of electrical engineers that own hardware design from initial concept through test and manufacturing. We have a high impact opportunity for an electronics engineer to shape the future of the Linear Generator’s electrical control hardware systems. As a member of the team, you will:
\n\nLow-Voltage Hardware Design: Design low-voltage (< 60V) electrical systems and PCBAs that enable core functions and expand the capability of the Linear Generator
\nBring-Up & Validation: Own the full bring-up, validation, and qualification of your custom electrical hardware designs
\nTechnical Reviews: Lead cross-functional design reviews to present concepts, align requirements, and secure approvals
\nComplex Diagnostics: Debug and troubleshoot complex hardware issues that arise across field deployments, test labs, and the production floor
\nDesign for Reliability: Partner closely with reliability engineers to analyze hardware performance and continuously increase system robustness
\nManufacturing Collaboration: Work directly with our New Product Introduction (NPI) team and external suppliers to optimize designs for manufacturability (DFM) and testability (DFT)
\nCross-Domain Integration: Interface with high-voltage hardware teams and define requirements for cabling and embedded firmware support
\nTeam Growth: Learn complex design concepts and mentor peers while collaborating with a world-class engineering team
\nYou have...
\n\n8+ years of experience with a Bachelor's degree, or 7+ years of experience with a Master's degree, in Electrical Engineering or a related field.
\nProven hands-on experience designing, troubleshooting, and realizing low-voltage electrical hardware (e.g., DC/DC converters, relays, e-fuses, and MOSFETs)
\nProficiency with PCBA schematic capture and PCB design tools (Altium strongly preferred)
\nStrong fundamentals in analog/mixed-signal design, including operational amplifiers, ADCs, and hardware filtering (anti-aliasing, bandpass, etc.)
\nExperience performing component derating analysis, worst-case tolerance stack-ups, and Design Failure Mode and Effects Analysis (DFMEA)
\nDemonstrated ability to drive projects forward from initial requirements through production
\nA \"collaborate-first\" mindset with strong communication skills across diverse technical teams and personalities
\nExperience in the full hardware development life cycle of PCBA’s and electrical assemblies, from requirements development to manufacturing support
\nFamiliarity with hardware reliability and environmental validation testing (e.g., HALT, thermal chamber testing, Hipot, vibration)
\nExperience working in a startup or rapid product development environment
\nFamiliarity with project management and documentation tools (e.g., Jira, Confluence)
\nBasic programming or scripting experience (Python, C, or C++) specifically for automating lab bench tests or debugging hardware
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"NPI - New Product Introduction","location":"Menlo Park, CA","team":"NPI - New Product Introduction","allLocations":["Menlo Park, CA"]},"createdAt":1785789129213,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nWe are seeking a highly capable Senior/Staff Manufacturing Process Engineer with a strong foundation in manufacturing process planning, industrial engineering, and data-driven problem-solving to bridge the gap between product development and scalable manufacturing.
\n
In this role, you will partner closely with Mechanical, Electrical, Manufacturing, Quality, and Supply Chain teams to develop robust, scalable manufacturing processes that enable safe, repeatable, and high-volume production. You will drive end-to-end process planning, PFMEA workshops, risk mitigation strategies, process validation, and quality planning to ensure new products launch successfully and existing products continuously improve.
This is not a downstream execution role. You will proactively influence product and process decisions by leveraging shop floor data, structured experimentation, and lessons learned from production to eliminate manufacturing risks before they impact volume production.
The ideal candidate combines strong process engineering fundamentals, lean manufacturing principles, and hands-on manufacturing experience, and thrives in a fast-paced, highly collaborative environment where continuous improvement is part of the daily culture.
Manufacturing Process Development
\n\nDevelop, validate, and optimize manufacturing processes from early prototype builds through high-volume production
\nLead manufacturing process validation activities using PFMEA, DOE, capability studies (Cpk), and GR&R
\nDrive cross-functional, closed-loop risk mitigation plans by partnering with Design Engineering, Quality, and Operations
\nEstablish manufacturing readiness plans, process validation strategies, and quality gates for new product introductions
\nManufacturing Optimization & Operational Excellence
\n\nPartner with Industrial Engineering to evaluate cycle times, line balancing, and resource utilization using Yamazumi charts and time studies
\nDrive touch-time reduction initiatives through process optimization, improved assembly sequencing, ergonomic improvements, fastening strategies, automation opportunities and subsystem testing
\nLead structured root cause investigations using 8D, 5 Whys, DOE, and statistical analysis to improve first-pass yield and process capability
\nIdentify and eliminate manufacturing bottlenecks to improve throughput, labor productivity, and overall equipment effectiveness (OEE)
\nChampion Lean Manufacturing, error-proofing (Poka-Yoke), standardization, and continuous improvement initiatives across production
\nManufacturing Scale-Up
\n\nOwn the transition of assembly processes from prototype builds to scalable production systems
\nPartner with Quality, Supply Chain, Operations, and NPI teams to successfully launch new manufacturing processes
\nSupport factory layout development, production line design, capacity planning, and equipment selection
\nSupport new factory launches, manufacturing transfers, and production ramp activities across domestic and international sites
\n7–10+ years (Senior) or 10–15+ years (Staff) of manufacturing/process engineering experience supporting complex electromechanical products
\nExpertise in PFMEA, Control Plans, Process Flow Diagrams, DOE, SPC, 8D, Cpk, and GR&R
\nExperience developing scalable manufacturing processes and supporting New Product Introduction (NPI) from prototype through high-volume production
\nExperience developing assembly equipment, fixtures, gauges, and automation systems
\nStrong knowledge of Lean Manufacturing, Six Sigma, Kaizen, line balancing, Yamazumi charts, time studies, and capacity modeling
\nProven ability to lead cross-functional technical initiatives and influence engineering decisions through data
\nExperience working in fast-paced NPI environments with evolving designs and manufacturing challenges
\nExperience in automotive, aerospace, energy, or other high-volume electromechanical manufacturing environments
\nHands-on mindset—you enjoy working on the production floor to validate ideas, troubleshoot issues, and implement improvements
\nComfortable making technical decisions in ambiguous situations while balancing quality, cost, schedule, and manufacturability
\nPassion for Lean Manufacturing with a bias toward simple, robust, and cost-effective solutions over unnecessary complexity
\nStrong systems thinking with the ability to connect product design, manufacturing processes, quality, and operational performance
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Materials Engineering","location":"Menlo Park, CA","team":"Materials Engineering","allLocations":["Menlo Park, CA"]},"createdAt":1786654450511,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nWe have a high-impact opportunity for a Staff Materials and Process Engineer who wants to join a world-class engineering team and help scale production of the Linear Generator. The materials and process team at Mainspring Energy works on complex development projects which are at the intersection of properties, performance and processing of a wide range of materials – non ferrous, ferrous, coatings, graphite, polymers etc. \nIn this role, you will develop reliable cost effective materials solutions and manage existing solutions through validation testing, process development and deployment on an actual part/subassembly. This is a great opportunity to be part of cross functional projects and collaborate with multiple teams such as Supply chain, Quality, Reliability, Design and Production. \n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nWe have a high-impact opportunity for a Staff Materials and Process Engineer who wants to join a world-class engineering team and help scale production of the Linear Generator. The materials and process team at Mainspring Energy works on complex development projects which are at the intersection of properties, performance and processing of a wide range of materials – non ferrous, ferrous, coatings, graphite, polymers etc.
\nIn this role, you will develop reliable cost effective materials solutions and manage existing solutions through validation testing, process development and deployment on an actual part/subassembly. This is a great opportunity to be part of cross functional projects and collaborate with multiple teams such as Supply chain, Quality, Reliability, Design and Production.
","id":"4f289448-fa6b-40be-982d-64bd04f73c10","lists":[{"text":"Responsibilities","content":"\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Staff Materials and Process Engineer","country":"US","workplaceType":"onsite","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nWe have a high-impact opportunity for a Staff Materials and Process Engineer who wants to join a world-class engineering team and help scale production of the Linear Generator. The materials and process team at Mainspring Energy works on complex development projects which are at the intersection of properties, performance and processing of a wide range of materials – non ferrous, ferrous, coatings, graphite, polymers etc.
\nIn this role, you will develop reliable cost effective materials solutions and manage existing solutions through validation testing, process development and deployment on an actual part/subassembly. This is a great opportunity to be part of cross functional projects and collaborate with multiple teams such as Supply chain, Quality, Reliability, Design and Production.
","descriptionBodyPlain":"Job Overview\nWe have a high-impact opportunity for a Staff Materials and Process Engineer who wants to join a world-class engineering team and help scale production of the Linear Generator. The materials and process team at Mainspring Energy works on complex development projects which are at the intersection of properties, performance and processing of a wide range of materials – non ferrous, ferrous, coatings, graphite, polymers etc. \nIn this role, you will develop reliable cost effective materials solutions and manage existing solutions through validation testing, process development and deployment on an actual part/subassembly. This is a great opportunity to be part of cross functional projects and collaborate with multiple teams such as Supply chain, Quality, Reliability, Design and Production. \n","hostedUrl":"https://jobs.lever.co/mainspringenergy/4f289448-fa6b-40be-982d-64bd04f73c10","applyUrl":"https://jobs.lever.co/mainspringenergy/4f289448-fa6b-40be-982d-64bd04f73c10/apply"},{"additionalPlain":"Before you apply, a quick note on your resume\nWe care about the substance of your work and want to make sure we learn as much as we can about your design experience. To help us evaluate your experience accurately, please ensure your resume includes:\nWhat you actually built or worked on — name the real product, subsystem, or hardware (not just \"components\" or \"systems\"). \"Redesigned the bracket mounting the compressor to reduce vibration failures\" tells us far more than \"designed mechanical components.\"\nWhat you personally did, separate from what your team did. If you contributed to a group project, tell us your specific role and contribution.\nThe engineering fundamentals you applied — tie your skills (CAD, FEA, GD&T, thermal/fluid analysis, testing, etc.) to the actual problem you used them on, rather than listing them as standalone skills.\nWhat happened as a result — did it pass validation/testing, resolve a failure, ship to production, and if so, at what volume or scale (prototype quantity, low-rate production, high-volume manufacturing)? This helps us understand whether your experience is with one-off/prototype hardware or product that shipped at scale.\nOne more thing: please don't feel obligated to keep your resume to one page. If accurately describing your relevant projects and contributions takes more space, that's completely fine — we'd rather see the detail than have you compress or omit meaningful work to fit a page limit. \n \nThank You!\n\n\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.\n","additional":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Mechanical Engr","location":"Menlo Park, CA","team":"Electromechanical","allLocations":["Menlo Park, CA"]},"createdAt":1770861251917,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nMainspring is seeking Staff Mechanical Design Engineers with a focus on designing electrical enclosures and cables while improving functionality and system-level performance. In this role, you will lead projects from setting requirements, designing, conducting cross functional reviews, coordinating testing and release to ensure that key electrical subsystems meet challenging technical requirements with a potential for direct reports. Ideal candidates will have a strong combination of technical expertise and the drive to solve complex problems in a collaborative environment.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking Staff Mechanical Design Engineers with a focus on designing electrical enclosures and cables while improving functionality and system-level performance. In this role, you will lead projects from setting requirements, designing, conducting cross functional reviews, coordinating testing and release to ensure that key electrical subsystems meet challenging technical requirements with a potential for direct reports. Ideal candidates will have a strong combination of technical expertise and the drive to solve complex problems in a collaborative environment.
","id":"70fa5578-7008-493a-810a-2ceb035abfd4","lists":[{"text":"Core Responsibilities","content":"\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking Staff Mechanical Design Engineers with a focus on designing electrical enclosures and cables while improving functionality and system-level performance. In this role, you will lead projects from setting requirements, designing, conducting cross functional reviews, coordinating testing and release to ensure that key electrical subsystems meet challenging technical requirements with a potential for direct reports. Ideal candidates will have a strong combination of technical expertise and the drive to solve complex problems in a collaborative environment.
","descriptionBodyPlain":"Job Overview\nMainspring is seeking Staff Mechanical Design Engineers with a focus on designing electrical enclosures and cables while improving functionality and system-level performance. In this role, you will lead projects from setting requirements, designing, conducting cross functional reviews, coordinating testing and release to ensure that key electrical subsystems meet challenging technical requirements with a potential for direct reports. Ideal candidates will have a strong combination of technical expertise and the drive to solve complex problems in a collaborative environment.\n","hostedUrl":"https://jobs.lever.co/mainspringenergy/70fa5578-7008-493a-810a-2ceb035abfd4","applyUrl":"https://jobs.lever.co/mainspringenergy/70fa5578-7008-493a-810a-2ceb035abfd4/apply"},{"additionalPlain":"Before you apply, a quick note on your resume\nWe care about the substance of your work and want to make sure we learn as much as we can about your design experience. To help us evaluate your experience accurately, please ensure your resume includes:\nWhat you actually built or worked on - name the real product, subsystem, or hardware (not just \"components\" or \"systems\"). \"Redesigned the bracket mounting the compressor to reduce vibration failures\" tells us far more than \"designed mechanical components.\"\nWhat you personally did, separate from what your team did. If you contributed to a group project, tell us your specific role and contribution.\nThe engineering fundamentals you applied - tie your skills (CAD, FEA, GD&T, thermal/fluid analysis, testing, etc.) to the actual problem you used them on, rather than listing them as standalone skills.\nWhat happened as a result - did it pass validation/testing, resolve a failure, ship to production, and if so, at what volume or scale (prototype quantity, low-rate production, high-volume manufacturing)? This helps us understand whether your experience is with one-off/prototype hardware or product that shipped at scale.\nOne more thing: please don't feel obligated to keep your resume to one page. If accurately describing your relevant projects and contributions takes more space, that's completely fine — we'd rather see the detail than have you compress or omit meaningful work to fit a page limit. \n \nThank You!\n\n\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.\n","additional":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Mechanical Engr","location":"Menlo Park, CA","team":"Mechanical and Structural Systems","allLocations":["Menlo Park, CA"]},"createdAt":1785964563808,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nAbout the Role\nMainspring is seeking a Mechanical Engineer to own defined-scope mechanical engineering tasks, workstreams, or moderate-complexity projects for our Linear Generator platform. In this role, you will design mechanical hardware, support analysis and testing, drive assigned work through validation and release, and work cross-functionally with engineering, manufacturing, quality, supply chain, test, and service teams.\nThis role is intended for engineers who have developed practical mechanical engineering experience through multiple design, analysis, test, release, or implementation cycles. A strong candidate should be able to independently own defined-scope engineering work, apply sound mechanical fundamentals, identify common risks, communicate clearly, and follow through on deliverables with support available for ambiguity, complex tradeoffs, or higher-risk decisions.\nCandidates who are still primarily learning engineering fundamentals, company processes, and task-level execution may be better aligned to an Associate Mechanical Engineer role, while candidates who have already demonstrated independent ownership of significant projects, subsystems, or technical workstreams may be better aligned to a Senior Mechanical Engineer role.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking a Mechanical Engineer to own defined-scope mechanical engineering tasks, workstreams, or moderate-complexity projects for our Linear Generator platform. In this role, you will design mechanical hardware, support analysis and testing, drive assigned work through validation and release, and work cross-functionally with engineering, manufacturing, quality, supply chain, test, and service teams.
\nThis role is intended for engineers who have developed practical mechanical engineering experience through multiple design, analysis, test, release, or implementation cycles. A strong candidate should be able to independently own defined-scope engineering work, apply sound mechanical fundamentals, identify common risks, communicate clearly, and follow through on deliverables with support available for ambiguity, complex tradeoffs, or higher-risk decisions.
\nCandidates who are still primarily learning engineering fundamentals, company processes, and task-level execution may be better aligned to an Associate Mechanical Engineer role, while candidates who have already demonstrated independent ownership of significant projects, subsystems, or technical workstreams may be better aligned to a Senior Mechanical Engineer role.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is seeking a Mechanical Engineer to own defined-scope mechanical engineering tasks, workstreams, or moderate-complexity projects for our Linear Generator platform. In this role, you will design mechanical hardware, support analysis and testing, drive assigned work through validation and release, and work cross-functionally with engineering, manufacturing, quality, supply chain, test, and service teams.
\nThis role is intended for engineers who have developed practical mechanical engineering experience through multiple design, analysis, test, release, or implementation cycles. A strong candidate should be able to independently own defined-scope engineering work, apply sound mechanical fundamentals, identify common risks, communicate clearly, and follow through on deliverables with support available for ambiguity, complex tradeoffs, or higher-risk decisions.
\nCandidates who are still primarily learning engineering fundamentals, company processes, and task-level execution may be better aligned to an Associate Mechanical Engineer role, while candidates who have already demonstrated independent ownership of significant projects, subsystems, or technical workstreams may be better aligned to a Senior Mechanical Engineer role.
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Mechanical Engr","location":"Menlo Park, CA","team":"Electromechanical","allLocations":["Menlo Park, CA"]},"createdAt":1781817023633,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nAbout the Role\nMainspring Energy is seeking a Staff Mechanical Engineer – Battery Design to lead battery pack and module development for current and future energy platforms.\nAs Mainspring's internal battery technical authority, you will help define next-generation battery architectures for future products while improving systems already in production. You'll partner closely with battery suppliers to influence pack and module designs and drive solutions that balance safety, reliability, manufacturability, performance, and cost. You'll influence key decisions across cell integration, thermal management, safety, and system architecture while working at the intersection of mechanical, electrical, and battery engineering.\nOur battery systems do far more than just store energy. They are the dynamic core of our linear generator platform. Tightly integrated into every sub-system, they act as the ultimate performance driver—sparking to life during grid-islanded startups, taming dynamic transient loads, and delivering resilient long-duration standby. This role is your chance to tackle complex battery engineering challenges head-on, drive our supplier strategy, and ensure our systems deliver rock-solid, scalable reliability in the real world. \nThe ideal candidate combines deep lithium-ion battery pack expertise with strong supplier-management experience and the ability to translate system requirements into robust production-ready designs.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy is seeking a Staff Mechanical Engineer – Battery Design to lead battery pack and module development for current and future energy platforms.
\nAs Mainspring's internal battery technical authority, you will help define next-generation battery architectures for future products while improving systems already in production. You'll partner closely with battery suppliers to influence pack and module designs and drive solutions that balance safety, reliability, manufacturability, performance, and cost. You'll influence key decisions across cell integration, thermal management, safety, and system architecture while working at the intersection of mechanical, electrical, and battery engineering.
\nOur battery systems do far more than just store energy. They are the dynamic core of our linear generator platform. Tightly integrated into every sub-system, they act as the ultimate performance driver—sparking to life during grid-islanded startups, taming dynamic transient loads, and delivering resilient long-duration standby. This role is your chance to tackle complex battery engineering challenges head-on, drive our supplier strategy, and ensure our systems deliver rock-solid, scalable reliability in the real world.
\nThe ideal candidate combines deep lithium-ion battery pack expertise with strong supplier-management experience and the ability to translate system requirements into robust production-ready designs.
","id":"6505c241-3d3f-4f69-a792-8fcfbf5f39ff","lists":[{"text":"Key Responsibilities","content":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy is seeking a Staff Mechanical Engineer – Battery Design to lead battery pack and module development for current and future energy platforms.
\nAs Mainspring's internal battery technical authority, you will help define next-generation battery architectures for future products while improving systems already in production. You'll partner closely with battery suppliers to influence pack and module designs and drive solutions that balance safety, reliability, manufacturability, performance, and cost. You'll influence key decisions across cell integration, thermal management, safety, and system architecture while working at the intersection of mechanical, electrical, and battery engineering.
\nOur battery systems do far more than just store energy. They are the dynamic core of our linear generator platform. Tightly integrated into every sub-system, they act as the ultimate performance driver—sparking to life during grid-islanded startups, taming dynamic transient loads, and delivering resilient long-duration standby. This role is your chance to tackle complex battery engineering challenges head-on, drive our supplier strategy, and ensure our systems deliver rock-solid, scalable reliability in the real world.
\nThe ideal candidate combines deep lithium-ion battery pack expertise with strong supplier-management experience and the ability to translate system requirements into robust production-ready designs.
","descriptionBodyPlain":"About the Role\nMainspring Energy is seeking a Staff Mechanical Engineer – Battery Design to lead battery pack and module development for current and future energy platforms.\nAs Mainspring's internal battery technical authority, you will help define next-generation battery architectures for future products while improving systems already in production. You'll partner closely with battery suppliers to influence pack and module designs and drive solutions that balance safety, reliability, manufacturability, performance, and cost. You'll influence key decisions across cell integration, thermal management, safety, and system architecture while working at the intersection of mechanical, electrical, and battery engineering.\nOur battery systems do far more than just store energy. They are the dynamic core of our linear generator platform. Tightly integrated into every sub-system, they act as the ultimate performance driver—sparking to life during grid-islanded startups, taming dynamic transient loads, and delivering resilient long-duration standby. This role is your chance to tackle complex battery engineering challenges head-on, drive our supplier strategy, and ensure our systems deliver rock-solid, scalable reliability in the real world. \nThe ideal candidate combines deep lithium-ion battery pack expertise with strong supplier-management experience and the ability to translate system requirements into robust production-ready designs.\n","hostedUrl":"https://jobs.lever.co/mainspringenergy/6505c241-3d3f-4f69-a792-8fcfbf5f39ff","applyUrl":"https://jobs.lever.co/mainspringenergy/6505c241-3d3f-4f69-a792-8fcfbf5f39ff/apply"},{"additionalPlain":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.\n","additional":"Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"department":"Mechanical Engr","location":"Menlo Park, CA","team":"Mechanical Engr","allLocations":["Menlo Park, CA"]},"createdAt":1789770448609,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThe Rings team owns one of the hardest technical problems in the Linear Generator: a piston and ring system that seals without liquid lubricant. Getting this right is foundational to the product’s low emissions and maintenance business model. The design space is demanding, with complex sealing geometry, demanding thermal and pressure conditions, and material performance and system behavior that all need to be considered simultaneously. Progressing the ring service interval is one of the most important development programs at Mainspring. As a Staff Mechanical Engineer on this team, you will take ownership of a significant piece of that challenge.
\nLead ring and piston development projects, including setting requirements and scope, developing novel designs, reviewing colleagues' designs and analyses in detail, and building production introduction plans
\nDesign complex moving parts in the piston and ring system, from originating ideas through detailed design, build, test, and evaluation of performance
\nAssess and root cause failures that involve coupled thermal, structural, materials, and fluid interactions, balancing analysis with hands-on physical intuition
\nDesign and run effective test campaigns, using both benchtop rigs and in-generator experiments, to validate designs and accelerate learning
\nDiscover and define requirements on surrounding subsystems to improve ring and piston performance
\nCollaborate closely with a talented engineering team in a fast-paced, iterative environment to find the best solutions
\nMaster's degree in Mechanical Engineering or equivalent with at least eight years of experience, or a Ph.D. with at least five years of experience
\nA proactive and collaborative work style suited for a dynamic R&D environment where priorities can evolve as you learn, including comfort with problems that cross team boundaries and engineering disciplines
\nExperience designing high-performance, precision parts from R&D through to production release
\nFluency in SolidWorks or a comparable CAD package. Comfortable using structural and thermal FEA as a design tool (Ansys is a plus)
\nAbility to generate 2D drawings for manufacturing, including comfort with GD&T
\nExcellent physical understanding and intuition in structural mechanics and heat transfer; strength in tribology, fluid mechanics, or thermodynamics is a plus
\nA systems approach to problem solving: Prefers to look at the whole system to identify negative interactions and opportunities for improvement
\nExcellent understanding of thermodynamics, experience interacting with a complex thermodynamic system. Power generation, energy storage, and aerospace (especially turbomachinery or propulsion) are all extremely relevant
\nExperience designing for high-cycle fatigue and high-pressure, high-temperature environments. Experience with super alloys is a plus
\nFluency in Python programming for data analysis, and experience developing and validating simplified models of systems and subsystems to inform failure analysis and design
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nWe have a high impact opportunity for a Modeling and Simulation Engineer to support the design, test, and manufacture of reliable and efficient linear generators at Mainspring Energy. On the system modeling and simulation team, you will have a central role in refining the way generators are designed by providing the tools through which the control system can be designed and validated. This role requires a quantitative physical understanding of the way things work combined with a passion and aptitude for software to bring that understanding to light.
\nAs part of this role, you will:
\n\nDetermine the appropriate dynamic response of the generator system to a variety of control commands. Write numerical models quantifying that behavior for simulation
\nCoordinate with controls engineers and navigate code in C++ to understand the inputs and expected response of the controller to sensed generator behavior
\nGenerate test plans to investigate unknown system behavior or validate observations gleaned from other simulations. Oversee the execution of those plans on the generator with support from the test team
\nWrite and debug solvers for dynamic systems written as ordinary differential equations (ODEs) or differential algebraic equations (DAEs)
\nArchitect custom simulation environments and optimize simulations and develop reduced-order models capable of computing simulated time steps faster than real time on dedicated hardware
\nConstruct computational dynamic system models using appropriate conservation equations directly in high level programming languages, e.g. python, C++
\nParticipate in a robust development process following software best practices
\nParticipate in peer review of code written in support of modeling, control, and software work throughout the team
\nGenerate written documentation (presentations, reports, etc) of model design and simulation results for a variety of audiences at Mainspring
\nYour success in this role will be instrumental in reducing the time it takes to develop, test, and deploy new controls features for linear generators and provide value for our customers. Having a thumb on the pulse of the generator as a system, you will be collaborating across technical domains, frequently integrating with executives and other leaders of software, mechanical design, and product development.
\nEngineering degree (Mechanical, Aerospace, Electrical, Chemical, etc) with a strong foundation in applied mathematics
\nStrong technical and analytical skills with 5+ years of practical experience in more than one physical domain relevant to linear generators: thermodynamics, electrical systems, fluid dynamics, etc
\nFamiliarity with numerical techniques for modeling and simulation and their use within existing commercial packages (e.g. Simulink, Dymola, GT-Power, NPSS, etc)
\nExperience designing, writing, and validating custom models written in a high-level programming language, e.g. Fortran, C/C++, Python, Julia, etc
\nThis position is a hybrid position (onsite + remote) at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Product Testing","location":"Menlo Park, CA","team":"Product Testing","allLocations":["Menlo Park, CA"]},"createdAt":1785956404664,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Product Testing","location":"Menlo Park, CA","team":"Product Testing","allLocations":["Menlo Park, CA"]},"createdAt":1781818769595,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Off product SW and Data Sys Engr","location":"Menlo Park, CA","team":"Off product SW and Data Sys Engr","allLocations":["Menlo Park, CA"]},"createdAt":1785966875415,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy is seeking a highly skilled Staff Controls Software Engineer to develop and test the critical software that integrates our Linear Generators into global energy infrastructure. As an individual contributor (IC) within a high-performing Scrum team, you will focus on building commercial-grade site control systems, ensuring seamless integration with Microgrids, Distributed Energy Resources (DERs), and utility-scale power plants. You will be responsible for writing high-quality code, conducting rigorous testing, and collaborating with your team to deliver the communication and control backbone of our technology.
\nTechnical Execution: Design, implement, and test control system features, ensuring they are robust and scalable for a high-volume manufacturing environment
\nProtocol Implementation: Develop and maintain communication interfaces using OPC-UA, Modbus, and other industrial protocols to ensure system interoperability
\nSCADA & HMI Development: Build and refine SCADA systems and HMI designs, focusing on creating intuitive operator interfaces and deep diagnostic visibility for the team
\nAgile Team Participation: Work closely within a Scrum framework, participating in sprint planning, code reviews, and daily stand-ups to deliver reliable software increments
\nTesting & Validation: Own the testing lifecycle for new features, including unit testing, integration testing, and hardware-in-the-loop (HIL) validation to ensure site safety logic and grid compliance
\nDER Integration: Implement strategies for integrating Mainspring technology into Distributed Energy Resource Management Systems (DERMS) and complex microgrid environments
\nCross-Functional Collaboration: Work with Product and Hardware teams to translate utility requirements and interconnection standards into functional software specifications
\nIndustry Experience: 8+ years of hands-on experience in commercial power generation, industrial automation, or utility-scale energy projects
\nSystems Expertise: Expert proficiency with SCADA, HMI, and industrial controllers (PLCs/PACs). Deep hands-on experience with IEC 61131-3 for machine control and a strong preference for experience in IEC 61499 for event-driven architectures. Experience with industrial serial protocols ( like UART) is a plus
\nDeep Protocol Knowledge: Proven track record of developing and testing control logic for complex power sites (e.g., microgrids, large-scale solar + storage). Expert-level proficiency in OPC-UA, MQTT, Modbus, and DNP3 within secure industrial environments
\nGrid Interconnection Standards: Experience with grid interconnection standards (e.g., IEEE 1547, UL 1741)
\nCybersecurity Frameworks: Knowledge of cybersecurity frameworks for industrial control systems (e.g., NERC CIP)
\nTechnical Communication: Ability to create clear technical documentation and system diagrams that bridge the gap between industrial hardware and modern software
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"On product SW and Sys Engr","location":"Menlo Park, CA","team":"On product SW and Sys Engr","allLocations":["Menlo Park, CA"]},"createdAt":1785436747187,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy has fundamentally redefined onsite power generation. Our breakthrough product—the Mainspring Linear Generator (LGen)—is a completely new category of energy technology. Distinct from an engine, turbine, or fuel cell, the LGen directly converts straight-line motion into electricity using a low-temperature, non-combustion thermochemical reaction.
\nWith only two moving parts per core, a frictionless air-bearing system, and zero-flame chemical conversions, we deliver over 46% net AC electrical efficiency. More importantly, it is the world’s only commercially available technology capable of real-time fuel-switching under load, seamlessly transitioning between natural gas, biogas/RNG, propane, hydrogen, and ammonia.
\nBehind this mechanical simplicity lies an incredibly complex software abstraction layer. To achieve dynamic load-following, sub-millisecond grid synchronization, and real-time thermochemical adaptive fuel mixing, our proprietary controls manage thousands of high-frequency variables simultaneously.
\nAs a Senior Staff Software Test & Automation Engineer, you will architect the core validation and automation frameworks that ensure this distributed energy asset operates with 100% safety and utility-scale reliability. You will own the strategy for testing the intersection of real-time embedded software, predictive control loops, and multi-fuel dynamics.
\nAs a principal driver of our Software Test team, you will:
\n\nArchitect Automation & Test Infrastructure: Design, scale, and maintain custom hardware test beds alongside robust, reusable test automation frameworks, software tools, and continuous integration/continuous deployment (CI/CD) pipelines
\nSystem Validation & Integration: Develop comprehensive test plans, test cases, technical test approaches, and traceability matrices to validate complex hardware/software integrations and resolve system-level bottlenecks
\nRoot Cause & Failure Analysis: Lead deep-dive failure analysis, debug and diagnose issues found during testing, and champion risk mitigation strategies to ensure test stability and environmental reliability
\nStrategic Coverage: Drive risk-based testing strategies, performing risk analysis to ensure 100% comprehensive test coverage of all critical-path functionalities
\nCross-Functional Collaboration: Partner with development teams and support cross-functional engineering initiatives to diagnose system anomalies and vet new technologies
\nExperience & Education: Bachelor’s degree in Computer Science or a related field with 10+ years of professional experience, or a Master’s degree with 9+ years in an SDET, Embedded Test, or Software Engineering role
\nStrategic Automation Leadership: A proven track record of leading complex automation projects from design to implementation, combined with the foundational ability to perform deep-dive manual exploratory testing and technical test case design
\nTechnical Versatility: Strong hands-on software development experience in Python and C++, with the flexibility to navigate, debug, and contribute to diverse codebases (including Bash scripting) as the project requires
\nAI Workflow Ownership: Demonstrated proficiency in leveraging AI coding assistants as a force multiplier for productivity, combined with the professional judgment to challenge, validate, and expand upon AI-generated solutions to ensure system integrity and long-term maintainability
\nDomain Expertise: Professional experience testing and validating systems in at least three of the following areas: Cloud computing, embedded systems, networking, IoT with RTOS, controls, simulations (MIL/SIL/PIL), emulators, or complex algorithms
\nDevOps & Infrastructure: Experience working with containerization and orchestration tools such as Docker, Kubernetes, and configuration management via Ansible
\nIndustry Tooling: High proficiency with common industry test and development workflows like Jira, Xray, GitLab, or equivalent tools
\nThis position is a hybrid position (onsite + remote) at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Quality","location":"Menlo Park, CA","team":"Quality","allLocations":["Menlo Park, CA"]},"createdAt":1781026768481,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nMainspring Energy is scaling production of a first-of-its-kind linear generator, a fundamentally new approach to power generation with the potential to replace combustion turbines globally. As we transition from development into volume manufacturing, supplier quality is a critical lever. This role owns the quality gate for a portfolio of suppliers producing complex components and special process parts from NPI qualification through steady-state production. You will operate with significant autonomy, serve as the subject matter expert on special processes for the broader SQE team, and work cross-functionally with Design Engineering, Materials & Process, and Supply Chain to build quality into the supply chain from the start, not through inspection. This is a senior individual contributor role with real accountability and real scope.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy is scaling production of a first-of-its-kind linear generator, a fundamentally new approach to power generation with the potential to replace combustion turbines globally. As we transition from development into volume manufacturing, supplier quality is a critical lever. This role owns the quality gate for a portfolio of suppliers producing complex components and special process parts from NPI qualification through steady-state production. You will operate with significant autonomy, serve as the subject matter expert on special processes for the broader SQE team, and work cross-functionally with Design Engineering, Materials & Process, and Supply Chain to build quality into the supply chain from the start, not through inspection. This is a senior individual contributor role with real accountability and real scope.
\nBuild and maintain trust-based relationships with assigned suppliers, serving as the primary quality point of contact and representing Mainspring's quality expectations clearly and consistently across cultures and geographies, including APAC and international suppliers as we scale
\nOwn the supplier quality gate from New Product Introduction (NPI) through steady-state production, including control plan development, PPAP review and approval, and process capability studies (Cp/Cpk) for assigned suppliers
\nIssue and drive closure of Supplier Corrective Action Requests (SCARs) using structured root cause analysis methodology (8D), holding suppliers accountable to corrective action timelines and validating effectiveness
\nReview and approve material and process deviation requests from suppliers, coordinating with Materials & Process Engineering and Design Engineering as required
\nConduct supplier process audits and site visits to assess compliance to control plans, quality system requirements, and Mainspring standards
\nOwn incoming inspection disposition and NCR management for assigned suppliers, making timely and defensible quality decisions to keep production moving
\nMaintain SPC monitoring and control plan updates in steady-state production, escalating negative trends before they become escapes
\nAct as subject matter expert and internal resource for the SQE team on special processes, providing guidance on qualification approaches, audit methodology, and deviation disposition
\nYou have successfully launched into volume production complex components and assemblies using advanced quality planning through product development, prototype into mass production
\nYou can thrive in structured and unstructured environments and are not dissuaded at the prospect of making hard decisions about what is important and urgent against a backdrop of limited resources
\nYou have effectively used your background in geometric dimensioning and tolerancing (GD&T) per ANSI Y14.5 to interpret manufacturing drawings and make independent disposition decisions. You have working knowledge of advanced measurement systems including CMM and laser scanning
\nYou have deep working knowledge of three or more special processes: welding, coating, heat treatment, cladding, thermal spray, electronics/PCBA manufacturing or precision machining at the level of auditing supplier process controls, reviewing process FMEAs, and approving PPAPs. Automotive, aerospace, or industrial power generation background preferred
\nYou have used data collection, analysis, and dashboarding to inform effective decision making
\nYou have a working knowledge of ISO 9001, AS9100 or IATF 16949 quality management system requirements
\nYou have coached or mentored less experienced quality engineers and are comfortable being the person others come to when the problem is hard or the answer is not in the playbook
\nBachelor's degree in Mechanical, Manufacturing, Industrial, or Materials Engineering, or a related technical field required
\nMinimum 7–10 years of Supplier Quality Engineering experience, with demonstrated progression into roles with independent ownership of supplier qualification programs
\nProven experience as a quality decision-maker on PPAP approvals, deviation dispositions, and Supplier Corrective Action Report (SCAR) closure for complex components or assemblies
\nExperience coaching or mentoring less experienced quality engineers, formally or informally
\nDeep working knowledge of at least two special processes (welding, coating, heat treatment, brazing, NDT, or electronics/PCBA) at the level of auditing supplier process controls, not just awareness
\nDemonstrated ability to work cross-functionally with Design Engineering, Materials & Process, and Supply Chain to drive quality outcomes without direct authority over those teams
\nAbility to travel 25–50%, including international travel to APAC suppliers
\nThis position is onsite or hybrid at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring Energy is scaling production of a first-of-its-kind linear generator, a fundamentally new approach to power generation with the potential to replace combustion turbines globally. As we transition from development into volume manufacturing, supplier quality is a critical lever. This role owns the quality gate for a portfolio of suppliers producing complex components and special process parts from NPI qualification through steady-state production. You will operate with significant autonomy, serve as the subject matter expert on special processes for the broader SQE team, and work cross-functionally with Design Engineering, Materials & Process, and Supply Chain to build quality into the supply chain from the start, not through inspection. This is a senior individual contributor role with real accountability and real scope.
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Operational Tech and Sys","location":"Menlo Park, CA","team":"Operational Tech and Sys","allLocations":["Menlo Park, CA"]},"createdAt":1788985440656,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nWe are seeking a Staff Technical Program Manager to drive high-stakes facility expansion, supplier expansion and readiness programs. You will manage project execution for manufacturing scale-up, orchestrating cross-functional dependencies across infrastructure, procurement, and supply chain teams to ensure our environments are fully prepared for high-volume production.
\nFactory & Manufacturing Readiness: Orchestrate the end-to-end program lifecycle for existing and new manufacturing facilities (including Capex, infrastructure, and permitting), with or without Contract Manufacturers (CMs). Facilitate cross-functional alignment to ensure all systems, processes, and sites are production-ready for scale
\nSupplier Readiness & Alignment: Lead the program-level synchronization of supplier capacity and inventory positioning. Coordinate with strategic sourcing, materials management and engineering partners to resolve alignment issues, managing the planning and replenishment model implementation for long-lead-time parts and quality control integration without directly performing procurement negotiations
\nSystems, Process, & Operational Excellence: Define and optimize the operational frameworks and tools that allow cross-functional teams to work efficiently. Standardize execution methods and processes to prevent bottlenecks in complex multi-disciplinary programs
\nProgram Ownership & Risk Management: Own the program decision-making process. Proactively identify risks across factory, supplier, and operational workstreams, leading cross-functional teams in developing and executing mitigation strategies
\nExecutive & Stakeholder Communication: Synthesize complex data from multiple workstreams into clear, actionable updates for leadership, ensuring transparency and alignment on program health and critical path items
\nOrganizational Readiness & Expansion: Program-manage organizational growth initiatives, including resource planning, hiring pipelines, and training programs, to ensure teams are fully scaled and equipped to support operational objectives
\n15+ years of experience in manufacturing operations, industrialization, or large-scale supply chain program management
\nExpertise in factory startup, facility permitting, and capital expenditure oversight
\nProven track record in strategic sourcing, inventory management, and contract negotiation for complex hardware programs
\nExceptional organizational and analytical skills with experience in production modeling, capacity planning, and quality control systems
\nDemonstrated ability to influence stakeholders at all levels and manage complex, multi-disciplinary programs in fast-paced environments
\nExceptional written and verbal communication skills
\nThis position is a hybrid position (onsite + remote) at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Operational Tech and Sys","location":"Menlo Park, CA","team":"Operational Tech and Sys","allLocations":["Menlo Park, CA"]},"createdAt":1785366026083,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nMainspring is revolutionizing energy generation. As the Staff Technical Program Manager for Software Engineering, you are the operational catalyst for our most critical software initiatives. Operating as the 'Chief of Staff' for execution, you translate high-level strategy into high-velocity delivery. You bridge the gap between long-lead hardware cycles and agile software development, optimizing the operational workflows that allow our teams to scale. You don’t just manage the roadmap; you drive execution, adjudicate technical trade-offs, and hold the organization accountable to our most ambitious company goals.
\nStrategic Ownership & Execution: Own the program end-to-end, from concept to validation readiness. Build and maintain the integrated master schedule, ensuring software deliverables synchronize with hardware/EE long-lead time dependencies. Challenge organizational assumptions, set resource requirements, and remain fully accountable for executing on company goals and the product roadmap. Work directly with engineering teams to develop comprehensive project schedules, define clear milestones, identify and mitigate risks, and manage budgets
\nEngineering Excellence & Operational Discipline: Champion a culture of high-velocity execution by establishing and enforcing scalable engineering workflows. You will partner with engineering leadership to drive bug triage, validation planning, and Engineering Change (EC) management, ensuring our processes accelerate development and protect delivery timelines
\nCross-Functional Orchestration: Partner directly with engineering leadership to drive solutions and navigate shifting priorities. Manage the critical path where disciplines intersect (e.g., firmware, controls, hardware), proactively resolving dependencies and keeping teams aligned across internal and external stakeholders
\nReporting & Data-Driven Accountability: Serve as the \"Single Source of Truth.\" Provide leadership with unvarnished, data-driven visibility into program health (RYG status, burn-down, and blocker lists). Track \"Say/Do\" ratios to improve forecasting accuracy and proactively communicate trade-offs, risks, and strategic recommendations at the executive level
\nHardware/Software Integration & Alignment: Bridge long-lead hardware development cycles with agile software releases. Drive integrated HW/SW timeline alignment, proactively managing cross-functional dependencies across electrical, mechanical, controls, and firmware engineering to ensure seamless, co-validated product delivery
\nMulti-Layer Software Management: Lead and manage software development across all architectural tiers of the complex power generation product—including low-level firmware, core system software, application-level software, and cloud infrastructure. Ensure aligned milestones, robust interface contracts, and continuous integration across all component layers from inception to release
\nRequired Skills:
\n\nBachelor’s degree in Engineering, Computer Science, or an equivalent technical field
\n10+ years of experience in technical program management, specifically managing software development projects for complex hardware products in integrated environments (e.g., energy, automotive, mechatronics)
\nTechnical Fluency: Ability to understand technical debates between Electrical, Software, and Controls engineers well enough to adjudicate priority and technical trade-offs
\nFull Lifecycle Mastery: Proven expertise in managing projects throughout the entire SDLC, including investigation, design, execution, and delivery to market. Ability to manage the feedback loop between development and real-world performance
\nDelivery Leadership & Accountability: Act as the single point of accountability for delivery decisions, executive reporting, and cross-team communication. You are responsible for aligning diverse functional groups to ensure the program meets its commitments
\nProcess Governance & Change Management: Demonstrated capability as a change agent, identifying and delivering process changes that accelerate time-to-market while driving organizational consistency and efficiency
\nCommunication: Exceptional executive presence; capable of moving seamlessly between high-level roadmap presentations and deep-dive bug triage with engineering teams
\nHand-off & Collaboration: Experience partnering with DevOps/Release Management functions to transition validated code into deployment pipelines. You focus on the readiness of the software; you rely on the Release Management team to define the mechanics of fleet delivery
\nSoftware Process & Tooling: Deep familiarity with software development processes and proficiency in project management tools (e.g., Gantt charts, risk matrices, Smartsheet, Jira)
\nCross-Functional Orchestration & Communication: Strong track record of managing complex, cross-functional projects with the ability to maintain a big-picture focus and provide clear, well-structured, and concise communication tailored to each stakeholder audience
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"department":"On product SW and Sys Engr","location":"Menlo Park, CA","team":"On product SW and Sys Engr","allLocations":["Menlo Park, CA"]},"createdAt":1790885680349,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nManage, document, and resolve fleet issues ensuring clear communication and follow-up on resolutions and improving the process
\nDiagnose root causes of system issues, distinguishing between mechanical, electrical, and software-related problems
\nCategorize, systematize, and address gaps in automated system behavior
\nCollaborate with cross-functional teams to provide technical support and enhance system behavior
\nDebug and troubleshoot existing control algorithms to improve system performance and reliability
\nAnalyze and understand C++ code to interpret behavior
\nImplement fixes to field issues in C++ code, and test them in simulation and laboratory environments
\nAdjust feature designs to address field issues
\nUse Python for data analysis, scripting, and system diagnostics
\nTune control gains and calibrate systems, documenting the process for future reference
\nIdentify and address gaps in system performance, ensuring continuous improvement
\nSupport reliability and manufacturing testing, contributing to the system's life cycle maintenance
\nExperience in successful root cause analysis of complex software-mechatronic systems
\nDriven and self-directed systems-thinker responsible for creating or improving effective sustaining engineering processes
\nExcellent communicator with demonstrated collaboration across multidisciplinary teams
\nDegree in mechanical or electrical engineering with controls focus
\n\n2-5 years of experience
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Product Testing","location":"Menlo Park, CA","team":"Product Testing","allLocations":["Menlo Park, CA"]},"createdAt":1773939380080,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nJob Overview\nOur Linear Generator is a sophisticated, automated, and integrated system spanning a wide range of engineering disciplines including thermodynamics, mechanical, electrical, software, and controls. We are looking for a driven, highly motivated Product Qualification Test Engineer to join our test engineering team. \n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nThis position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.
","salaryDescriptionPlain":"This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO company equity through Restricted Stock Units (RSUs) + benefits.\n","text":"Test Engineer, Product Qualification","country":"US","workplaceType":"onsite","opening":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nDoes your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.
\nIn more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
\nThis compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.
","categories":{"commitment":"Salary","department":"Finance","location":"Menlo Park, CA","team":"Finance","allLocations":["Menlo Park, CA"]},"createdAt":1785894069269,"descriptionPlain":"About Mainspring\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.\nThe core values that ground our work, guide our decisions, and connect us together:\nPragmatic Optimism\nExcellence without Ego\nProactive Collaboration\n\n\nPosition Overview\nReporting to the Chief Financial Officer, the Vice President of Financial Planning & Analysis (FP&A) leads Mainspring Energy's enterprise-wide financial planning, forecasting, long-range planning, and strategic financial analysis. This executive serves as a trusted advisor to the CFO and executive leadership team by translating financial and operational data into actionable insights that drive strategic decision-making.\nThis role is focused on enterprise financial strategy, top-down analysis, and long-range planning. The Vice President will lead the FP&A function through a team of experienced managers who oversee day-to-day budgeting, forecasting, and business partnering. The successful candidate will strengthen the analytical capabilities of the Finance organization, drive the company's strategic planning process, challenge assumptions with data, and help shape the financial strategy that supports Mainspring's next phase of growth.\n","description":"Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nReporting to the Chief Financial Officer, the Vice President of Financial Planning & Analysis (FP&A) leads Mainspring Energy's enterprise-wide financial planning, forecasting, long-range planning, and strategic financial analysis. This executive serves as a trusted advisor to the CFO and executive leadership team by translating financial and operational data into actionable insights that drive strategic decision-making.
\nThis role is focused on enterprise financial strategy, top-down analysis, and long-range planning. The Vice President will lead the FP&A function through a team of experienced managers who oversee day-to-day budgeting, forecasting, and business partnering. The successful candidate will strengthen the analytical capabilities of the Finance organization, drive the company's strategic planning process, challenge assumptions with data, and help shape the financial strategy that supports Mainspring's next phase of growth.
\nMainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.
\nThe core values that ground our work, guide our decisions, and connect us together:
\nReporting to the Chief Financial Officer, the Vice President of Financial Planning & Analysis (FP&A) leads Mainspring Energy's enterprise-wide financial planning, forecasting, long-range planning, and strategic financial analysis. This executive serves as a trusted advisor to the CFO and executive leadership team by translating financial and operational data into actionable insights that drive strategic decision-making.
\nThis role is focused on enterprise financial strategy, top-down analysis, and long-range planning. The Vice President will lead the FP&A function through a team of experienced managers who oversee day-to-day budgeting, forecasting, and business partnering. The successful candidate will strengthen the analytical capabilities of the Finance organization, drive the company's strategic planning process, challenge assumptions with data, and help shape the financial strategy that supports Mainspring's next phase of growth.
\n