Cell Reliability Engineer, Cell Qualification

Cell Reliability Engineer, Cell Qualification

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Tesla's battery cells are the foundation of every product we create, requiring innovative cell architectures with cutting‑edge performance and unprecedented manufacturing scale. In a fast‑paced and dynamic environment, passion and self‑motivation are essential to push boundaries. The Cell Reliability Engineer will focus on evaluating and forecasting the performance and longevity of lithium‑ion battery cells for Tesla’s energy products. This role involves identifying reliability limits, critical failure modes, and determining warranty reserves using statistical models and real‑world data.

Collaboration with cross‑functional engineering teams is key to integrating insights into product development and warranty strategies.

• Develop and implement robust models to predict the lifetime of lithium‑ion cells using data from accelerated life tests, real‑world usage, and simulated stress conditions
• Design and execute reliability tests to simulate real‑world conditions, identify failure points, and validate lifetime predictions while establishing protocols for accelerated testing
• Evaluate reliability limits by analyzing limit samples to define acceptable performance thresholds for product quality assurance
• Lead cross‑functional risk analysis for new designs using tools such as DFMEA, NUDD, and fault tree analysis
• Identify critical failures in lithium‑ion cells, including capacity loss, impedance growth, and short‑circuiting, while establishing predictive models for failure forecasting
• Analyze battery testing data, including charge/discharge cycles and temperature variation, to enhance predictive models for lifespan forecasting
• Collaborate with product development, engineering, and customer support teams to integrate lifetime forecasting insights into designs, quality assurance, and warranty planning

• Bachelor's Degree in Materials Science, Chemical Engineering, Electrical Engineering, or equivalent experience
• Strong understanding of lithium‑ion battery chemistry and degradation mechanisms
• Experience with statistical modeling and data analysis for reliability and lifetime forecasting
• Proficiency in designing and executing reliability tests for energy storage systems
• Familiarity with risk analysis tools such as DFMEA, NUDD, and fault tree analysis
• Ability to work effectively in cross‑functional teams and communicate complex technical concepts
• Experience with battery testing equipment and data analysis software

• Medical plans > plan options with $0 payroll deduction
• Family‑building, fertility, adoption and surrogacy benefits
• Dental (including orthodontic coverage) and vision plans, both have options with a $0 paycheck contribution
• Company Paid (Health Savings Accounts) HSA Contribution when enrolled in the High‑Deductible medical plan with HSA
• Healthcare and Dependent Care Flexible Spending Accounts (FSA)
• 401(k) with employer match, Employee Stock Purchase Plans, and other financial benefits
• Company paid Basic Life, AD&D
• Short‑term and long‑term disability insurance (90 day waiting period)
• Employee Assistance Program
• Sick and Vacation time (Flex time for salary positions, Accrued hours for Hourly positions), and Paid Holidays
• Back‑up childcare and parenting support resources
• Voluntary benefits to include: critical illness, hospital indemnity, accident insurance, theft & legal services, and pet insurance
• Weight Loss and Tobacco Cessation Programs
• Tesla Babies program
• Commuter benefits
• Employee discounts and perks program

$128,000 - $192,000/annual salary + cash and stock awards + benefits

Pay offered may vary depending on multiple individualized factors, including market location, job‑related knowledge, skills, and experience. The total compensation package for this position may also include other elements dependent on the position offered. Details of participation in these benefit plans will be provided if an employee receives an offer of employment.