R&D Test Engineer

Mainspring Energy · Menlo Park, California · Posted 2026-08-21

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Job Overview

Mainspring is seeking an open-minded, curious, and highly motivated R&D Test Engineer who likes to solve challenging cross-functional problems in both a research and production environment. In this role, you will design and execute tests on the Linear Generator, focusing on new electrical and software changes that improve product capabilities and performance.You will lead critical sub-system and system-level development and validation tests on new releases of our product and gain exposure to the entire system, including electrical and mechanical components, software, and controls. The breadth of this role is perfect for an engineer or researcher who wants to use their advanced experimental and analytical skills in a fast-paced product development environment.

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About Mainspring Energy

Mainspring Energy is engineering advanced technology by developing a prototype of a linear generator that converts fuel to electricity.

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Updated 2026-10-11.