Reliability Engineer, Cell Testing

Tesla

Austin, Texas Posted October 28, 2026

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On-site Full-time Mid level
Job Description

Description:
Our team test and qualify Tesla’s large-format in-house cells for electrochemical performance and product reliability. We work with Cell Manufacturing team and other cross functional teams to deepen our understanding of our battery cells and to improve product performance. We develop cycle life test plans to evaluate battery performance over time and monitor capacity fade and impedance growth, set up new fixtures and execute the plan that enables battery cell performance.

Responsibilities:
We are looking for a highly motivated and passionate professionals to work on disruptive cutting-edge battery electrode technology that enables Tesla electric vehicles and energy storage systems to be more efficient and reliable
Be the Reliability testing owner of the team, tying mechanical-based testing with electrochemical tests. Partner with cell design and quality teams to execute trials that capture impact of edge case scenarios and contribute to holistically improving Tesla’s In-house cells
In this role, you will execute and shepherd lithium-ion cell tests using cell cycling equipment, temperature control fixtures and circulators
This role will also write test plans, propose design of experiments, summarize results in test reports, and ensure the highest possible data integrity from the lab
Mentor direct and larger team members in the science of cell characterizations and reliability engineering
It is essential to be able to plan, prioritize, and communicate status of lab testing activities to hit project deadlines
Be a member of a cross functional product development team to help determine the ideal cell design for Tesla products

Requirements:
Degree or relevant experience in Materials Engineering, Mechanical Engineering, Chemical Engineering or a related field
Self-motivated and a self-starter with hands-on skills
Ability to develop new test concepts and methods, and execute independently
Some knowledge of electrochemical test equipment used in battery cell testing or equivalent
Strong communication skills and collaborative mindset
Understanding of lithium-ion cell safety and its risks
Some coding experience required (i.e. MATLAB, Python, and/or similar data analysis and statistics tools)

Compensation & Benefits:
Benefits

Along with competitive pay, as a full-time Tesla employee, you are eligible for the following benefits at day 1 of hire:
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

Required Skills
testing manufacturing mechanical engineering communication collaboration MATLAB Python data analysis statistics
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