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Active2mo ago

R&D Test Engineer

Mainspring Energy·📍 Menlo Park, California, United States

Employment

Full-Time

Work mode

On-site

Experience

3+ years

Salary

$108.8K – $123.6K/yr

OverviewRequirementsCompanySimilar jobs

Role overview

Job description

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.

Responsibilities
  • Perform hands on work and work directly with technicians to troubleshoot, retrofit, and operate our Linear Generator test units
  • Collaborate with engineering teams to steer R&D projects by designing and executing experiments that inform product design
  • Analyze data, generate reports and communicate results with engineering teams to facilitate learnings and design releases
  • Manage test priorities on a daily basis to meet higher level deadlines with a focus on throughput and completing high value studies
  • Develop & improve processes and infrastructure to support testing on our next generation products
    • Qualifications
  • 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

    • About this listing

    • Source: Mainspring Energy's official careers site (via Lever) · last confirmed on the source 27 Oct 2026
    • Posted 21 Aug 2026

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    What they are looking for

    Skills & requirements

    python →c++ →project management →

    Qualification

    Master’s degree in electrical engineering, mechanical engineering, physics, or equivalent with 3+ years of applicable experience

    Department · Product Testing

    Hiring company

    Mainspring Energy

    Energy

    Power generation for data centers, utilities, industrial & enterprise applications. Fuel-flexible, fast to deploy, high-efficiency, low NOx power.

    Company profile →Open jobs →Company site ↗

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