Principal Mechanical Engineer
Mainspring Energy is hiring for Principal Mechanical Engineer in Menlo Park, CA. Staff level. First seen August 6, 2026; open as of November 11, 2026. Jobs taken straight from company career pages — no aggregator in between.
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- Company
- Mainspring Energy
- Where
- Menlo Park, CA
- Level
- Staff
- First seen
- August 6, 2026
- Listed via
- Lever
What the posting says
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. This 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…
Read more and apply on Mainspring Energy's site
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