Battery System Engineer

About this role

ALSO is seeking a Battery Systems Engineer to architect and own the battery system strategy for their innovative small electric vehicles. You'll lead critical technical decisions spanning cell selection, pack design, charging strategy, thermal management, and operating philosophy while collaborating across vehicle architecture, controls, and product teams.

What you'll do

• Own battery system architecture and analytical foundation, leading trade studies on chemistry, topology, and operating limits
• Build and validate electrical, thermal, and degradation models using real-world duty cycles and measured data
• Define charging strategy, operational use cases, degradation management, and end-of-life operating behavior
• Evaluate and select cells, design characterization test plans, and translate performance data into pack-level constraints
• Establish battery system requirements including protection thresholds, thermal limits, and BMS parameters
• Support bench and vehicle-level testing to correlate models with hardware measurements

What they're looking for

• Battery systems engineering with shipped EV product experience
• Lithium-ion cell electrochemistry, thermal behavior, and degradation mechanisms
• Modeling (Python, MATLAB, Simulink): equivalent circuit, thermal, degradation simulations
• EV duty cycle development and mission profile translation
• BMS hardware/firmware requirements and embedded systems fluency
• Cell characterization testing and data interpretation
• Cross-functional systems thinking and technical leadership