Pack Performance Engineer

Gotion Inc. is based in Silicon Valley, CA, currently building a Manufacturing facility in Manteno, IL and has R&D centers in Ohio, China, Japan and Europe. We innovate in the next generation electric vehicle and energy storage technologies (lithium batteries and related systems) with the aim to accelerate electrified transportation and achieve sustainable development. Gotion is powered by a leading power battery technology company that provides solutions for vehicles including the world's first mass commercial e-bus route.

Gotion is a career destination - we are not simply attempting to just fill another job, but to pursue a dream of global green energy together! We offer 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.

Department:
Battery Systems / Pack Engineering

Reports to:

Head of Battery Systems Engineering (or Pack Engineering Lead)

Level: Senior / Staff Engineer

Location:

United States (site aligned to Gotion's North America engineering footprint)

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.

• BMS Interface, Power Limits & Vehicle Integration
• 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
• Battery System Requirements & Performance Validation
• 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
• Pack Hardware Performance & Thermal Management
• 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

• 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…