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. Role Summary Join Rivian as a Sr. Battery Engineer within the ESS Product Excellence team, based in our Franklin office. In this role, you will support the sustaining engineering of HV battery systems that are already in production, with a heavy focus on field performance analysis, reliability, and service issue mitigation. You will also assist in documenting and communicating lessons learned and Design for Manufacturing (DFM) input into next‑generation battery designs. If you are a self‑starter with foundational battery systems experience, a passion for diagnosing complex issues in the field, and a desire to shape the design of our future products, we want to hear from you. Help us keep the world adventurous forever. Responsibilities Support sustaining engineering for in‑production HV battery systems Assist the team’s liaison activities between Service, Reliability, Reman, FAME, Plant ME/PE/Ops, Supplier Quality, and Product Development to drive durable solutions to battery issues observed in the field and at service centers. Maintain a system‑level view of how hardware, BMS software, diagnostics, and vehicle usage patterns interact to impact customer experience. Field performance analysis and service issue mitigation Analyze field, warranty, and ongoing reliability test data to detect trends, characterize emerging failure modes, and quantify risk to customers and the business. Support root cause investigations for HV battery‑related field and service issues (e.g., no‑start, reduced performance, diagnostic trouble codes, degradation anomalies), driving permanent corrective and preventive actions. Assist Service Engineering and Technical Support to define, refine, and validate diagnostic strategies, service procedures, and repair paths, ensuring they are robust, efficient, and safe for field execution. Support prioritization and monitoring of field actions (e.g., service campaigns, software updates, component changes). Design Feed-Forward and Continuous Improvement Collect and document lessons learned from field and production back into battery architecture, component selection, and integration strategies for current and future programs. Collaborate with Manufacturing Engineering, Reman, and Supplier Quality to improve build robustness, yield, rework/repair strategies, and remanufacturing flows for HV battery assemblies. Support design decisions to improve service access, diagnostic coverage, component modularity, and repairability, minimizing customer downtime and total cost of ownership. Support the development and maturation of cross‑functional processes (PD, ME, Ops, Service, Reliability, Reman) that tie together design, manufacturing, and field data to accelerate problem detection and resolution. Technical Documentation and Communication Analyze test and field data, author clear technical reports, and present findings and recommendations to engineering leadership and cross‑functional partners. Create and maintain system‑level documentation (e.g., requirements, DFMEAs inputs, fault trees, test plans/summary reports) that connect observed issues back to design and process controls. Qualifications Experience & Education 3-5 years of experience in Battery, Automotive, Aerospace, or related industries, with exposure to HV battery systems, field performance, or failure analysis. A bachelor’s degree in an engineering discipline (e.g., Electrical, Mechanical, Mechatronics, Automotive, etc) or equivalent years of work experience. Technical Skills Good understanding of HV battery system architecture, including cells, modules, pack, contactors, pyros, sensing, cooling, BMS hardware/software, and vehicle interfaces. Familiarity with field issue root cause analysis, including use of telematics, warranty, and diagnostic data to drive corrective and preventive actions. Basic proficiency or coursework experience using CAN/vehicle communication tools and data analysis environments (e.g., Vector tools, CANoe/CANape, Python, MATLAB, Databricks, Hex) for debugging and trend analysis. Some working knowledge of battery diagnostics. Familiarity with DFM/DFS/DFR principles, production test strategies (e.g., End‑of‑Line), and their relationship to field performance and reliability. Solid understanding of high‑voltage safety and safe work practices in both lab and field environments. Problem Solving & Collaboration Strong problem‑solving skills, grounded in core engineering principles, first‑principles reasoning, and structured root cause methodologies. Demonstrated ability to work in a fast‑paced environment with a strong sense of ownership, urgency, and follow‑through from problem identification to implemented solution. Experience working in cross‑functional teams, with the ability to bridge design, manufacturing, service, and reliability perspectives. Strong verbal and written communication skills, including the ability to simplify complex technical topics for diverse audiences. Familiarity with issue tracking and project management tools (e.g., Jira, etc.). Pay Disclosure The salary range for this role is USD 121,500 - 151,900 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 February 20, 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 candidateaccommodations@rivian.com. Candidate Data Privacy Rivian may collect, use and disclose your personal information or personal data (within the meaning of the applicable data protection laws) when you apply for employment and/or participate in our recruitment processes (“Candidate Personal Data”). This data includes contact, demographic, communications, educational, professional, employment, social media/website, network/device, recruiting system usage/interaction, security and preference information. Rivian may use your Candidate Personal Data for the purposes of (i) tracking interactions with our recruiting system; (ii) carrying out, analyzing and improving our application and recruitment process, including assessing you and your application and conducting employment, background and reference checks; (iii) establishing an employment relationship or entering into an employment contract with you; (iv) complying with our legal, regulatory and corporate governance obligations; (v) recordkeeping; (vi) ensuring network and information security and preventing fraud; and (vii) as otherwise required or permitted by applicable law. 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