Battery System Engineer

The role

You will own the battery system architecture and analytical foundation for electric vehicle platforms. This role involves driving technical decisions across cell selection, charging strategy, pack architecture, and thermal behavior.

What you will do

• Lead trade studies across chemistry, pack topology, SOC window, cell selection, and operating limits
• Build and advance cell- and pack-level electrical, thermal, and degradation models
• Develop battery duty cycles from real-world usage data and mission profiles
• Define battery operating strategies including charging, degradation management, and end-of-life
• Own cell evaluation and down-selection through characterization test plans
• Define battery system requirements including protection thresholds and thermal limits
• Partner with BMS hardware, firmware, and controls teams
• Define test cases and support bench and vehicle-level bring-up
• Drive model-to-measurement correlation across electrical, thermal, and degradation domains

Required qualifications

• 8+ years in battery systems engineering with demonstrated ownership of battery architecture and requirements on a shipped product
• Deep understanding of lithium-ion cell behavior
• Hands-on modeling expertise (Python, MATLAB, Simulink)
• Experience developing or validating duty cycles for EV or electrified powertrain applications
• Ability to translate cell and pack behavior into BMS hardware and firmware requirements
• Fluency in controls and embedded systems
• BS/MS in Electrical Engineering, Mechanical Engineering, or related field

Nice to have

• Cell characterization experience (HPPC, OCV curves, degradation cycling)
• Familiarity with BMS state estimation algorithms (SOC, SOH, SOE)
• Experience with advanced simulation tools (Ansys Mechanical, Fluent, Icepak, or equivalent)
• Fast-charge protocol development and optimization
• Background in small EVs, two-wheelers, or light electric mobility platforms
• Familiarity with requirements management tools
• Strong business acumen in framing engineering tradeoffs

Benefits

• Health, dental and vision insurance covered up to 100% by ALSO
• FSA & HSA options
• One Medical membership
• Dedicated insurance advocates
• Fertility and family building benefits with Progyny
• Flexible time off
• 401(k) match

About the company

ALSO is an electric mobility company focused on creating vertically integrated, small EVs. They are located in Silicon Valley.