M
USD 116000–136000/yr

Senior Manufacturing Engineer - DFM

United StatesUnited States·EdisonSalarysenior
Manufacturing EngineerManufacturing & Production
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Quick Summary

Requirements Summary

Design and develop fixtures, jigs, and assembly equipment with a focus on precision, repeatability,

Technical Tools
Manufacturing EngineerManufacturing & Production

Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable local power generation technology, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. 

The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless reaction with near-zero NOx emissions. Backed by top-tier investors including Khosla Ventures, Bill Gates, American Electric Power, Lightrock, and General Catalyst Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion.

Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.

We are looking to build relationships with people who share our values:

Pragmatic Optimism. Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.

Excellence without Ego. We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.

Proactive Collaboration. The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.

More information can be found at www.mainspringenergy.com


We are seeking a highly capable Manufacturing Engineer with a strong mechanical engineering foundation to bridge the gap between product design and scalable production.

In this role, you will partner closely with Mechanical Design Engineering to ensure our products are not only functional, but manufacturable, scalable, and robust at volume. You will play a critical role in shaping design decisions early—driving DFM/DFX, tolerance strategies, and assembly error-proofing into the product architecture.

This is not a downstream role. You will actively challenge and influence design concepts, ensuring they are suitable for high-volume production—not just prototype success.

The ideal candidate combines strong mechanical design fundamentals with hands-on manufacturing experience and thrives in collaborative, fast-paced environments.

Requirements

~1 min read
  • Own the transition of assembly processes from prototype builds to scalable production systems

  • Plan and validate production processes using PFMEA, DOE, and capability studies (Cpk, GR&R)

  • Collaborate cross-functionally with Quality, Supply Chain, and Operations to move from prototype to volume production

  • Support factory layout, line design, capacity planning, and continuous improvement efforts

  • Education and work experience:
  • Bachelor’s or Master’s degree in Mechanical Engineering or related field

  • 5+ years of experience in mechanical design, manufacturing engineering, or a hybrid role

  • Proficiency in CAD tools (e.g., SolidWorks, CATIA)
  • GD&T and tolerance stack-up analysis

  • 2D drawing creation for manufacturing

  • Datum strategy and precision assembly

  • Demonstrated experience influencing product design for manufacturability

  • Experience designing assembly processes and scaling from prototype to production

  • PFMEA, 8D, DOE

  • Process capability (Cpk), GR&R

  • Assembly technologies (fastening, machining, laser metrology)

  • Willingness to travel internationally up to 15%

  • Ability to challenge design decisions with data and first-principles thinking

  • Strong intuition for “what will break at scale” vs. what works in prototype

  • Hands-on mindset—you’re comfortable on the floor validating your ideas

  • Bias for simple, cost-effective solutions over over-engineering

  • 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.

    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.

    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.

    Location & Eligibility

    Where is the job
    Edison, United States
    On-site at the office
    Who can apply
    US

    Listing Details

    Posted
    June 5, 2026
    First seen
    June 6, 2026
    Last seen
    June 6, 2026

    Posting Health

    Days active
    0
    Repost count
    0
    Trust Level
    79%
    Scored at
    June 6, 2026

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    M
    Senior Manufacturing Engineer - DFMUSD 116000–136000