Senior Mechanical Engineer - Lead Hardware for Power Gen

Mainspring Energy, headquartered in Menlo Park, CA, is seeking a Senior Mechanical Engineer to own significant mechanical projects within the Linear Generator platform. You will drive designs from concept through validation and release, working cross-functionally to deliver hardware into production or field use.

The role requires demonstrated ownership of mechanical design across multiple cycles, strong tradeoff judgment, and the ability to manage risks and dependencies with limited day-to-day