R&D Test Engineer

Mainspring EnergyMenlo Park, CAleveroffentliggjort 21.08.2026
Skal:PythonQA/TestLead

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