Pack Performance Engineer

Gotion • Irvine, CA

7d • Hybrid

About The Position

The Pack Performance Engineer owns the technical bridge between cell, BMS, and vehicle: defining and validating how a battery pack performs across its power boundaries, thermal envelope, and system requirements. This is a hybrid role that sits deliberately at the intersection of three disciplines — BMS/controls, systems engineering, and pack hardware/thermal — rather than living entirely inside one. You will define power and SOC/SOP limits and see them through to vehicle integration, translate performance requirements into validated system attributes, and own pack-level thermal and hardware performance from design through DVP.

Requirements

• Bachelor's or Master's degree in Electrical Engineering, Mechanical Engineering, or a related field
• 7+ years of experience in battery systems, BMS, or pack engineering at an EV OEM or battery systems supplier
• Hands-on experience with SOC/SOP estimation, cell balancing, and isolation measurement
• Demonstrated experience defining charge/discharge current limits and power boundaries across SOC, temperature, and cell capability
• BMS and Vehicle Control Unit (VCU) integration experience
• Experience defining battery system requirements and performance attributes, with functional safety traceability
• Experience with pack thermal design and validation — thermal cycling, thermal runaway, and DVP
• Experience with high-voltage battery pack design, prototyping, and validation
• Working familiarity with multiple cell chemistries (e.g. NCM, LFP)
• Strong cross-functional collaboration skills across systems, controls, hardware, and vehicle integration teams

Nice To Haves

• A demonstrated “T-shaped” background spanning both BMS/controls and pack hardware/thermal domains, rather than depth in only one
• Experience in a high-volume EV production environment, including support through production ramp
• Direct ownership of functional safety (ISO 26262) traceability from requirement to validation
• Prior experience at an EV OEM or battery systems integrator (e.g. supporting passenger, commercial, or energy storage platforms)

Responsibilities

• Define battery charge/discharge current limits, combining SOC, temperature, and cell capability to establish accurate power boundaries
• Own SOC estimation and SOP (state of power) algorithm inputs and validation
• Lead cell balancing strategy and isolation measurement verification
• Drive BMS and Vehicle Control Unit (VCU) integration, ensuring pack performance data and limits are correctly interpreted at the vehicle level
• Support functional safety testing and requirements across chemistries (e.g. NCM, LFP)
• Assess the impact of production ramp, design changes, and process changes on battery system performance
• Translate electrified-powertrain architecture and performance targets into clear, traceable battery system requirements
• Own performance-attribute definition and specification across the battery system
• Build and maintain functional safety traceability from requirement to validation
• Lead systems-level validation planning and execution across battery systems, requirements, and vehicle integration
• Partner with powertrain, controls, and vehicle integration teams to keep requirements and validation evidence aligned
• Own pack-level performance evaluation: available power, internal resistance, and thermal performance
• Provide pack performance input into BMS configuration
• Lead battery performance testing including thermal cycling, thermal runaway characterization, and DVP (Design Verification Plan) execution
• Support custom high-voltage battery pack design, prototype build, and validation
• Own pack thermal / cooling system development, from concept through validated performance
• Analyze capacity, DCIR, cell-disconnect behavior and other pack-level performance data to inform design decisions

Benefits

• Outstanding opportunities to individuals seeking an exciting and challenging working environment
• Everyone is highly valued and plays a vital role in the growth of our organization
• Base pay is one part of our total compensation package at Gotion, and is determined within a range. This provides you with the opportunity to progress as you grow and advance your career at Gotion.
• Equal opportunity employer
• Dedicated to fostering a diverse workforce that reflects the communities we serve
• Cultivating a culture of inclusion and belonging
• Ensuring equal employment opportunities for all
• Provide equal opportunity to all individuals regardless of race, creed, color, religion, gender, sexual orientation, gender identity or expression, national origin, disability, age, genetic information, veteran status, marital status, pregnancy or related conditions (including breastfeeding), parental status, criminal histories consistent with legal requirements, or any other characteristic protected by law.
• Strive to create an environment where everyone feels valued, respected, and empowered to thrive.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior