Redwood Materials
Senior Battery Test and Validation Engineer
San Francisco, California, United States · Senior · Full-time
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DOL prevailing wage, 2026-27 wage year · Industrial Engineers (17-2112) · San Francisco-Oakland-Fremont, CA. Wage level is derived by USCIS from the offered wage, occupation and worksite; the occupation shown is inferred from the job title.
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About the role
- This is a fully on-site role at 100 Hooper.
- Analyze, interpret, and present test data to both technical and non-technical stakeholders, turning raw results into clear engineering conclusions that inform qualification decisions and program risk assessment
Responsibilities
- Design test protocols by translating high-level performance and compliance questions into concrete test matrices, channel allocations, and timelines
- Execute and manage concurrent test and screening campaigns across multiple battery types at the cell, module, and pack level, including cycler programming, test monitoring, and failure root-cause analysis
- Drive lab infrastructure and equipment strategy, evaluating and recommending cycler and chamber purchases, fixture design, and channel capacity planning as the program scales
- Innovate on test methodology and execution to extract maximum insight from limited channels and time, including smarter test matrix designs, advanced cycler programming, and developing automation scripts
- Collaborate with the battery software and data engineering team to define, prioritize, and validate software automation of characterization processes
- Strong communication skills and ability to collaborate effectively with systems engineers, battery algorithms engineers, compliance teams, and program managers to ensure cross-functional stakeholder needs are met
Skills
- BS or MS in Engineering (Mechanical, Chemical, Materials, Electrical), or a related field
- Minimum 3 years of experience
- Strong intuition for lithium-ion cell behavior, operating limits, cell-level failure modes, and degradation mechanisms
- Hands-on experience with electrochemical characterization techniques such as HPPC, EIS, dQ/dV analysis, and cycle life testing
- Proficiency in data analysis and scripting with Python or MATLAB
- Experience with battery cycler platforms (e.g., Arbin, Maccor, Neware) including test programming and troubleshooting
- Skills, Knowledge, and Abilities:
- Actual compensation may vary based on a variety of factors, including experience, education, and skills.
Compensation
- $170,000 - $195,000 USD
- Compensation will be commensurate with experience.
Company info
- About Redwood Materials
- Redwood Materials was founded in 2017 by
- JB Straubel, co-founder and former CTO of Tesla, on a simple but radical idea:
- the critical minerals powering the energy transition already exist.
- They just need to come back.
- Today Redwood is the largest lithium-ion battery recycler in North America - recovering, refining, and redeploying critical minerals from end-of-life batteries back into the supply chain.
- On the energy side, Redwood has deployed the largest second-life battery project in the world, delivering power to AI data centers in months rather than years using proprietary energy architecture engineered entirely in-house.
- The company is profitable, the market it operates in is projected to grow 20 to 50 times over the next decade, and Redwood is the only company with the supply chain, the technology, and the operational scale to lead it.
This listing is sourced directly from Redwood Materials's careers page and normalized into a canonical job model.