Staff Battery Cell Test Engineer

About Rivian 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 End-to-end Program Cell Test Management: lead entire cell test campaigns from SOP preparation and test/channel planning through execution to delivery of comprehensive and reliable validation reports and cell model calibration/validation data package. Metrology and Measurement System Analysis: standardizes hardware test fixtures and metrology equipment through Gauge R&R evaluations and robust calibration protocols to achieve measurement system precision and repeatability across all setups. Cell Data Pipeline: contribute to deploying and maintaining robust and future-proof cell data systems handling various internal and external data sources. Test Execution and Data Processing Automation: suggest and implement SW solutions to automate test preparation, execution, data processing and validation report generation. Advance Characterization and Test Method Development: collaborate with characterization engineer to standardize and document comprehensive cell-level characterization protocols across thermal safety, electrochemical performance, and durability testing to ensure consistent, repeatable execution and reliable data collection across the team. Cell Testing and Characterization Capability Expansion: contribute to the selection, sourcing, installation, commissioning and validation of new test system HW and SW solutions. Qualifications Must have: MS degree in an engineering discipline with experience in testing of lithium-ion battery cells/packs. 4+ years of industry experience in battery cell testing, writing/validating test scripts, analyzing and presenting test results. Experience applying Measurement System Analysis, Gauge R&R and sensitivity analysis to Li-ion cell test results. Good understanding of cell performances metrics and how to evaluate them with testing and other analysis. Good understanding of electrochemical processes in various lithium-ion chemistries. Experience in python and SQL database and prompt/context engineering. Excellent attention to detail and critical thinking. Problem solving skills and theories knowledge, outside of the box thinking and proactivity. Passionate about research/work in lithium-ion batteries, especially for EV application. Excellent communication and presentation skills. Autonomous time management. Nice to have: Familiar with cell teardown, CT scan and other lithium-ion battery analysis methodologies and tools. Familiar with database architecture. Familiar with cell safety, abuse, reliability and environmental testing. Familiar Harness engineering knowledge Pay Disclosure The salary range for this role is USD 137,800 - 172,200 for California based applicants. This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting. An employee’s position within the salary range will be based on several factors including, but not limited to, specific competencies, relevant education, qualifications, certifications, experience, skills, geographic location, shift, and organizational needs. The successful candidate may be eligible for annual performance bonus and equity awards. We offer a comprehensive package of benefits for full-time and part-time employees, their spouse or domestic partner, and children up to age 26, including but not limited to paid vacation, paid sick leave, and a competitive portfolio of insurance benefits including life, medical, dental, vision, short-term disability insurance, and long-term disability insurance to eligible employees. You may also have the opportunity to participate in Rivian’s 401(k) Plan and Employee Stock Purchase Program if you meet certain eligibility requirements. Full-time employee coverage is effective on their first day of employment. Part-time employee coverage is effective the first of the month following 90 days of employment. More information about benefits is available at rivianbenefits.com. You can apply for this role through careers.rivian.com (or through internal-careers-rivian.icims.com if you are a current employee). This job is not expected to be closed any sooner than October 23, 2026. 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. Rivian is committed to ensuring that our hiring process is accessible for persons with disabilities. If you have a disability or limitation, such as those covered by the Americans with Disabilities Act, that requires accommodations to assist you in the search and application process, please email us at [email protected]. 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