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USD 108,768–123,600 per year

R&D Test Engineer

United StatesUnited States·Menlo ParkSalarymid
EngineeringOtherQa EngineerR&D Test Engineer
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Quick Summary

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.

Technical Tools
EngineeringOtherQa EngineerR&D Test Engineer

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.

  • 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

  • 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

  • Location & Eligibility

    Where is the job
    Menlo Park, United States
    On-site at the office
    Who can apply
    US

    About this job

    Pay per year
    $108,768–$123,600 a year
    12% below the $132,100 median for Qa Engineer jobs on Jobera (561 salaries).
    Who can apply
    United States
    Posted
    55 days ago
    Employer
    has 90 open jobs on Jobera in 2 countries.

    Listing Details

    Posted
    August 21, 2026
    First seen
    August 24, 2026
    Last seen
    October 16, 2026

    Posting Health

    Days active
    52
    Repost count
    1
    Trust Level
    39%
    Scored at
    October 16, 2026

    Signal breakdown

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    R&D Test EngineerUSD 108,768–123,600 per year