Senior EV Systems Engineer

Location/Work Arrangement: Norwalk, California | Full-Time | On-site with field travel

Position Summary

Our client is seeking a Senior EV Systems Engineer with 10+ years of relevant experience to support the architecture, integration, commissioning, validation, and continuous improvement of electric vehicle systems.

This is a hands-on senior engineering role focused on vehicle-level integration across high-voltage batteries, electric propulsion, controls, charging, thermal management, hydraulics, low-voltage systems, diagnostics, and vehicle communications. The role will also support diesel-to-electric conversion programs for commercial and heavy-duty equipment.

Responsibilities

• Lead EV system integration programs from requirements and architecture through commissioning, validation, production release, and field deployment.
• Develop vehicle-level requirements, system architectures, engineering specifications, bills of materials, and validation plans.
• Assess diesel-powered commercial vehicles and industrial equipment for conversion to electric propulsion.
• Integrate batteries, BMS, motors, inverters, chargers, DC-DC converters, vehicle control units, cooling systems, and charging interfaces.
• Design and review high-voltage and low-voltage electrical architectures, schematics, wiring, grounding, fusing, contactors, and protection systems.
• Integrate CAN-based vehicle communications, including SAE J1939, diagnostics, and fault-handling strategies.
• Develop and calibrate controls for propulsion, regenerative braking, charging, thermal management, hydraulics, and auxiliary systems.
• Perform commissioning activities, functional testing, validation, troubleshooting, and root-cause analysis.
• Maintain engineering documentation, change control, test records, and technical reports.
• Work with manufacturing, quality, procurement, software, service, customers, and suppliers.
• Support design reviews, customer acceptance testing, field troubleshooting, and regulatory or certification activities.
• Mentor junior engineers and technical staff.

Qualifications

• Bachelor's degree in Electrical Engineering, Mechanical Engineering, Mechatronics, Automotive Engineering, Systems Engineering, or a related field.
• 10+ years of relevant experience in electric vehicles, hybrid vehicles, commercial vehicles, industrial machinery, automotive systems, or vehicle integration.
• Demonstrated experience leading vehicle or equipment integration projects through commissioning, validation, and production release.
• Strong hands-on knowledge of high-voltage batteries, BMS, motors, inverters, chargers, DC-DC converters, power distribution, contactors, and high-voltage interlocks.
• Experience developing or reviewing high- and low-voltage schematics, wiring diagrams, interfaces, and electrical protection strategies.
• Strong knowledge of CAN communications, SAE J1939, diagnostics, data logging, and vehicle-network troubleshooting.
• Experience integrating vehicle control units across propulsion, charging, thermal, hydraulic, and auxiliary systems.
• Strong troubleshooting, failure analysis, root-cause analysis, and validation testing skills.
• Knowledge of EV electrical safety and high-voltage testing practices.
• Strong technical writing, communication, project ownership, and mentoring skills.
• Valid driver's license and ability to travel as required.
• Experience with heavy-duty commercial vehicles, diesel-to-electric conversions, EV safety standards, MATLAB/Simulink, CAN diagnostic tools, CAD, or related engineering systems is preferred.