Test Engineer, Product Qualification
mainspringenergy
| Company | mainspringenergy |
| Category | Engineering |
| Location | Menlo Park |
| Remote | On-site (inferred) |
| Employment | Not stated |
| Level | Not stated |
| Salary | USD 108k–124k |
| Posted | 19 Mar 2026 |
| Last verified | 3 Aug 2026 |
| Source | Employer ATS (lever) |
Description
About Mainspring
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.
The core values that ground our work, guide our decisions, and connect us together:
Pragmatic Optimism
Excellence without Ego
Proactive Collaboration
Job Overview
Our 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.