# R&D Test Engineer at Mainspring Energy

- Company: Mainspring Energy
- What the company does: Local power generation for data centers, utilities, industrial & enterprise applications. Fuel-flexible, fast to deploy, high-efficiency, low NOx power. Backed by General Catalyst and Khosla.
- Company website: https://www.mainspringenergy.com/
- Type: Startups
- Level: Mid level
- Location: Menlo Park, CA
- Work setup: On-site
- Pay: $109K to $124K base salary per year (USD)
- Posted: 2026-08-21
- Apply by: 2026-10-08
- Apply: https://jobs.lever.co/mainspringenergy/bf0521c6-2d3b-47a8-a9c4-0f79db22543b
- Page: https://www.1752.vc/careers/jobs/mainspring-energy-r-and-d-test-engineer/

## About the role

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,...

## What they're looking for

- Master’s degree in electrical engineering, mechanical engineering, physics, or equivalent with 3+ years of applicable experience
- Experience designing and executing tests in an industrial or academic environment, specifically involving instrumentation and data analysis
- Successful communicator, with a collaborative mindset, who will interface across a range of teams and personalities
- Proficiency in programming with Python/ MatLab/ C++ (at least one)
- Strong organizational and project management skills

Tags: Product Testing