Battery Test Engineer
Posted 19 May 2026
BranchFactor Summary
The original posting with the fluff stripped out
- Management level
- Individual contributor
- Employment
- On-Site
- Contract
- Contract
No salary listed for this role.
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The Role We are seeking a hands-on Battery Test Engineer with a proactive, get‑it‑done attitude to join a team qualifying next‑generation BMS algorithms and architectures. In this role, you will be instrumental in validating pack-level battery systems and constructing automated Python data pipelines to turn algorithm designs into production-ready consumer products.
Location: Cupertino, California, USA
Work Type: Contract
Work Schedule: On-site
What You’ll Do
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Execute Pack-Level Test Plans — Run complex electrical, thermal, and battery cycler test plans specifically at the pack level, delivering high-quality dataset outputs on schedule.
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Build Data Automation & Ingestion Pipelines — Develop and maintain Python scripts to automate data ingestion, process raw cycler logs, and streamline continuous test data analysis.
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Analyze & Investigate — Process high-volume test data to support algorithm engineers in evaluating pack behavior and investigating electrical or thermal anomalies.
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Troubleshoot & Maintain — Diagnose equipment, BMS firmware interactions, and pack-level sample failures; repair and calibrate test hardware as needed.
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Automate Validation Workflows — Co-develop automated testing frameworks and hardware-in-the-loop (HIL) setups alongside test engineering peers.
What You Bring (Must-Haves)
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Pack-Level Battery Testing — Extensive hands-on experience running test profiles, qualification protocols, and diagnostic routines on multi-cell lithium-ion battery packs using high-channel battery cyclers (e.g., Arbin, Maccor, Chroma).
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Python Data Automation & Ingestion — Strong Python programming skills dedicated to test automation, raw data ingestion, ETL/pipeline creation, and processing large time-series datasets.