Cell Test Engineer - Cell Engineering Lab

Rivian is on a mission to keep the world adventurous forever. This goes for the emissions-free Electric Adventure Vehicles we build, and the curious, courageous souls we seek to attract. As a company, we constantly challenge what''s possible, never simply accepting what has always been done. We reframe old problems, seek new solutions and operate comfortably in areas that are unknown. Our backgrounds are diverse, but our team shares a love of the outdoors and a desire to protect it for future generations. Responsibilities: Design, develop, and execute test methods to evaluate lithium-ion cells including electrical, mechanical, and electrochemical test. Write script, set up programs to run the test with different cell tests tools. Write SOP, drive the decision for battery material selection based on the test results, and communicate test result to different functional groups of cell engineers and scientists. Manage cell test facility planning, purchasing and utilization Design test fixture, improve testing capability and accuracy, and extract presentative and meaningful data. Utilize various CAD tools for designing test fixtures and tools with mechanical engineering. Procuring of test equipment, maintain test space and perform troubleshooting when necessary. Collaborate with battery data engineers to process and populate cell testing data to database. Qualifications: BS in an engineering discipline with minimum +5 years of relevant experience in lithium-ion battery cells or in energy storage cells. Have relevant background of mechanical design with various SW packages. Passionate about research and works in lithium-ion battery or energy cells. Problem solving skills, think outside of the box. Good communication and time management skills. Flexibility and adaptability in a fast paced and dynamic work environment. Have experience in using battery cyclers, writing, and validating test scripts Ability to work autonomously. Good to have: Have good understanding of electrochemical processes in various energy cells. Experience of EIS, HPPC, PITT/GITT, and dV/dQ or dQ/dV. Experience in data analysis tools is a plus. Experience of teardown of high-capacity cells. Equal Opportunity Rivian is an equal opportunity employer and complies with all applicable federal, state, and local fair employment practices laws. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, ancestry, sex, sexual orientation, gender, gender expression, gender identity, genetic information or characteristics, physical or mental disability, marital/domestic partner status, age, military/veteran status, medical condition, or any other characteristic protected by law. 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Created: 2025-11-01