<h3>About Mainspring</h3><p>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.</p><p>The <a href="https://www.mainspringenergy.com/company"><span style="color:#3598db;"><span style="text-decoration:underline;">core values</span></span></a> that ground our work, guide our decisions, and connect us together:</p><ul><li>Pragmatic Optimism</li><li>Excellence without Ego</li><li>Proactive Collaboration</li></ul><div><br></div><h3>Job Overview</h3><p>Mainspring 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.</p><br><br><h3>Core Responsibilities</h3><ul><li>Lead ideation and design reviews to develop innovative solutions that enhance performance and reduce cost of the Linear Generator and its electrical subsystems</li><li>Own the structure, layout, optimization, prototyping, testing, and deployment of electrical enclosures and harnesses</li><li>Partner with Electrical, Reliability, Test, NPI, Manufacturing, and supplier teams to define design direction, validate solutions, and meet project milestones</li><li>Oversee execution by setting requirements and coordinating across disciplines to maintain cohesive technical direction</li><li>Manage and mentor engineers, guiding technical decisions, setting priorities, and supporting professional growth</li><li>Proactively balance timelines, resources, and risks to ensure consistent delivery on key engineering initiatives</li><div> </div></ul><h3>Qualifications</h3><ul><li>Degree: BS or MS in Mechanical, Electrical, or related engineering field with 11 years of industry experience</li><li>Proven ownership of electrical enclosure and cable designs, with experience influencing cross-functional teams</li><li>Deep expertise in sheet metal, mechanical–electrical integration, and design for manufacturability</li><li>Strong foundation in electrical principles, thermal modeling, and system-level design</li><li>Proficient in SolidWorks and PDM; experience with CFD/FEA tools (e.g., Ansys) is a plus</li><li>Demonstrated ability to make technical trade-offs, guide design direction, and deliver complex systems</li><li>Passion for mentoring engineers and advancing high-impact, low-carbon energy technologies</li></ul><br><div><div><strong>Before you apply, a quick note on your resume</strong><br>We 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:</div><ul><li><strong>What you actually built or worked on</strong> — 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."</li><li><strong>What you personally did</strong>, separate from what your team did. If you contributed to a group project, tell us your specific role and contribution.</li><li><strong>The engineering fundamentals you applied</strong> — tie your skills (CAD, FEA, GD&amp;T, thermal/fluid analysis, testing, etc.) to the actual problem you used them on, rather than listing them as standalone skills.</li><li><strong>What happened as a result</strong> — 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.</li></ul><div><strong>One more thing: please don't feel obligated to keep your resume to one page.</strong> 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.  </div><div> </div><div><strong>Thank You!</strong></div></div><div><br></div><p>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.</p><p>In 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.</p><p>This 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.</p>

<p class="text-steel f-b1 md-max:mb-d">At Mainspring we believe the fastest path to the net-zero carbon grid is vastly increasing the amount of solar and wind power while building a supporting clean energy system that ensures affordability and multi-day, cross-season resilience. Getting there requires flexible, scalable, local technologies that can adapt to the shifting grid landscape &ndash; including the transition from natural gas to renewable fuels like biogas, green ammonia, and green hydrogen.</p>
<div>
<p class="text-steel f-b1">The Mainspring Linear Generator delivers an unmatched level of flexibility for the transition ahead. It&rsquo;s local so you can site where power is needed, it&rsquo;s dispatchable so you can ramp up and down to complement renewables, and it&rsquo;s fuel-flexible so you can operate on the cleanest fuels available today and in the future. Our products are already at work at Fortune 500 customer sites, accelerating the arrival of the net-zero carbon grid.</p>
</div>

Mechanical Engineering Manager - Electromechanical

<h3>About Mainspring</h3><p>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.</p><p>The <a href="https://www.mainspringenergy.com/company"><span><span>core values</span></span></a> that ground our work, guide our decisions, and connect us together:</p><ul><li>Pragmatic Optimism</li><li>Excellence without Ego</li><li>Proactive Collaboration</li></ul><div><br /></div><h3>Job Overview</h3><p>Mainspring 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.</p><br /><br /><h3>Core Responsibilities</h3><ul><li>Lead ideation and design reviews to develop innovative solutions that enhance performance and reduce cost of the Linear Generator and its electrical subsystems</li><li>Own the structure, layout, optimization, prototyping, testing, and deployment of electrical enclosures and harnesses</li><li>Partner with Electrical, Reliability, Test, NPI, Manufacturing, and supplier teams to define design direction, validate solutions, and meet project milestones</li><li>Oversee execution by setting requirements and coordinating across disciplines to maintain cohesive technical direction</li><li>Manage and mentor engineers, guiding technical decisions, setting priorities, and supporting professional growth</li><li>Proactively balance timelines, resources, and risks to ensure consistent delivery on key engineering initiatives</li><div> </div></ul><h3>Qualifications</h3><ul><li>Degree: BS or MS in Mechanical, Electrical, or related engineering field with 11 years of industry experience</li><li>Proven ownership of electrical enclosure and cable designs, with experience influencing cross-functional teams</li><li>Deep expertise in sheet metal, mechanical–electrical integration, and design for manufacturability</li><li>Strong foundation in electrical principles, thermal modeling, and system-level design</li><li>Proficient in SolidWorks and PDM; experience with CFD/FEA tools (e.g., Ansys) is a plus</li><li>Demonstrated ability to make technical trade-offs, guide design direction, and deliver complex systems</li><li>Passion for mentoring engineers and advancing high-impact, low-carbon energy technologies</li></ul><br /><div><div><strong>Before you apply, a quick note on your resume</strong><br />We 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:</div><ul><li><strong>What you actually built or worked on</strong> — 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."</li><li><strong>What you personally did</strong>, separate from what your team did. If you contributed to a group project, tell us your specific role and contribution.</li><li><strong>The engineering fundamentals you applied</strong> — tie your skills (CAD, FEA, GD&amp;T, thermal/fluid analysis, testing, etc.) to the actual problem you used them on, rather than listing them as standalone skills.</li><li><strong>What happened as a result</strong> — 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.</li></ul><div><strong>One more thing: please don't feel obligated to keep your resume to one page.</strong> 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.  </div><div> </div><div><strong>Thank You!</strong></div></div><div><br /></div><p>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.</p><p>In 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.</p><p>This 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.</p>

Mechanical Engineering Manager - Electromechanical

About the Job

About the Company

Mainspring Energy

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