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About the Role
The Staff Battery Test and Validation Engineer will own and run Redwood's battery characterization program, serving as the technical authority on testing protocols and data analysis. This role is central to understanding second-life battery systems for data centers, generating foundational data for operating parameters, models, and algorithms.
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.
- 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.
- 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.
Requirements
- BS or MS in Engineering (Mechanical, Chemical, Materials, Electrical), or a related field.
- 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.
- Minimum 3 years of experience.
- 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.
- Deep drive to automate workflows and reduce manual processes to improve test efficiency and minimize errors.
- Bonus: experience with AI tools, especially coding assistants like Cursor or Claude Code; background in EV battery pack qualification or validation programs; familiarity with battery safety and compliance standards (e.g., UN38.3, UL2580, UL1974).
Skills
- Python
- MATLAB
- Battery cycler platforms
- Electrochemical characterization techniques
- HPPC
- EIS
- dQ/dV analysis
- Cycle life testing
- AI tools
- Coding assistants
- Battery safety and compliance standards
Location
- On-site
- 100 Hooper
Work Type
- Fully on-site
- Full-time
Experience Level
- Minimum 3 years of experience
Education Level
- BS or MS in Engineering (Mechanical, Chemical, Materials, Electrical), or a related field
Salary/Compensations
- $170,000—$195,000 USD
About the Company
- 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.
Equal Opportunity
- We collect personal information (PI) from you in connection with your application for employment with Redwood Materials, including the following categories of PI: identifiers, personal records, professional or employment information, and inferences drawn from your PI. We collect your PI for our purposes, including performing services and operations related to your potential employment. If you have additional privacy-related questions, please contact us at privacy@redwoodmaterials.com.