Position Summary
The Electrical Battery Engineer III is a senior individual contributor responsible for the electrical design, analysis, and validation of battery cells, modules, and pack-level systems used in high-reliability applications (aerospace, defense, and/or industrial energy storage). This role owns technical decisions across the product lifecycle — from concept through qualification and production support — and serves as a technical resource for less-experienced engineers.
Key Responsibilities
- Lead electrical design of battery modules and packs, including cell selection, series/parallel configuration, protection circuitry, and BMS (Battery Management System) integration
- Perform electrical analysis: voltage/current distribution, thermal-electrical interactions, impedance, state-of-charge/state-of-health estimation, and failure mode analysis (FMEA)
- Develop and execute test plans for electrical performance, safety, and environmental qualification (e.g., abuse testing, overcharge/short circuit, vibration, thermal cycling) in accordance with standards such as MIL-PRF, DO-311, UN 38.3, or UL 1642/2580
- Support NDAA/DFARS compliance efforts, including sourcing traceability for cells and components (relevant to defense-focused battery programs)
- Collaborate with mechanical, thermal, and systems engineering teams to ensure integrated pack design meets performance, safety, and regulatory requirements
- Create and maintain engineering documentation: schematics, wiring diagrams, test reports, and design verification records
- Support root cause investigations for field or production issues and implement corrective actions
- Interface with customers and suppliers on technical requirements, design reviews, and qualification data
- Mentor junior engineers (Engineer I/II) and review their design and test work
- Support new product introduction (NPI) and transition of designs from prototype to production
