Test Automation Engineer Intern Fall 2026

Test Automation Engineering Intern

Redwood Energy is building some of the fastest lowest-cost energy storage in the U.S. from both new battery modules and second-life EV packs. Second-life hardware arrives with a history different chemistries capacities and states of health and every unithas tobe proven safe and reliable before it ships. That proof comes fromtest: the automated systems that exercise the firmware and electronics inside our products and decide whethertheyreready for the field.

Our test engineering team builds those systems the test stands on the production floor the hardware-in-the-loop benches thatvalidatefirmware releases and the CI pipelines that tie them together. As a Test Automation Engineering Internyoullwork alongside ourengineersbuilding the next generation of this test Python that drives real instruments and real battery hardwarehelpbring up new test stands from the bench up and debug failures where the root cause could live in the test code the firmware or the unit under test. This isa great opportunityto apply whatyouvelearned in coursework to production test systems with mentorship from experienced engineers along the way.

Responsibilities will include:

• Test Automation: Write and maintain Python test automation for firmware and hardware validation using pytest and our internal test frameworks.
• Instrument Control: Develop drivers and tooling for programmable power supplies electronic loads data acquisition and switching hardware over protocols like SCPI CAN and Modbus.
• Test Stand Bring-Up: Help bring up new test stands from fixtures and wiring through the software that sequences them as we expand our validation capability.
• System Debugging: Investigate real failures on real equipment using CAN traces instrument logs and bench tools to determine whether the fault lies in the test code the fixture or the unit under test.
• Continuous Integration: Add regression coverage to our CI pipelines so firmware changes are validated automatically rather than by hand.
• Documentation & Process: Contribute to documentation and test processes that support taking test systems from prototype toward production.
• Youllown a scoped project end to end and present your results to the engineering team at the close of the internship.

Desired Qualifications:

• Background: Currently pursuing a BS or MS in Electrical Engineering Computer Engineering Computer Science Mechatronics or a related field.
• Programming Foundations: Working proficiency in Python including comfort reading and modifying a codebase you did not write.
• Testing Experience: Experience writing automated tests with pytest or a comparable framework from coursework projects or prior internships.
• Version Control: Experience with Git and a pull-request-based development workflow.
• EE Fundamentals: Solid grasp of circuit basics voltage current resistance and power and how they relate sufficient to predict what a measurement should read and recognize when it doesnt.
• Hardware Fundamentals: Able to read a schematic wiring diagram or datasheet and act on it; hands-on experience working safely around energized equipment power supplies loads or battery hardware from lab work projects or prior internships.
• Communication Protocols: Familiarity with CAN Modbus SCPI or other instrument and industrial protocols is a plus even if only from classwork or personal projects.
• Linux: Familiarity with the Linux command line is a plus.
• Curiosity & Rigor: A safety-conscious mindset strong attention to detail and eagerness to learn how production test systems are built. Prior industry or energy storage experience is not expected.

The position is full-time. Compensation will be commensurate with experience.

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