BMS Validation Engineer

Global Connect Technologies; Milwaukee (WI); On-site; USD 90,000 - 120,000; Full time

Job summary

Global Connect Technologies is seeking a highly motivated BMS System Test Engineer to support validation and verification activities for Battery Management Systems used in electric vehicles, energy storage, or battery-powered products.

The engineer will work with hardware, software, controls, and validation teams to ensure reliable BMS functionality under various operating conditions. This role focuses on system-level testing, HIL validation, CAN diagnostics, and battery integration.

Qualifications

• Bachelor's degree in Electrical or related field.
• 3+ years in BMS testing or automotive system testing.
• Strong knowledge of lithium-ion battery systems and BMS functionality.
• Experience with CAN protocols and diagnostic tools.
• Hands-on with HIL systems, test benches, or automated validation setups.
• Familiarity with MATLAB/Simulink and embedded testing.
• Good debugging, analytical, and documentation skills.
• Awareness of ISO 26262 and automotive validation processes.

Responsibilities

• Develop and execute system-level test plans for BMS.
• Perform functional, integration, regression, and performance testing.
• Conduct HIL and bench-level testing for battery systems.
• Validate protection features like over/under-voltage and over-current.
• Analyze CAN logs, diagnostics, and test results for root cause analysis.
• Collaborate with cross-functional teams to resolve issues.
• Automate test scripts and validation processes using Python or CAPL.
• Support verification of SOC, SOH, balancing, charging, and thermal management.
• Use CANoe, CANalyzer, Vector tools, MATLAB/Simulink, or dSPACE for testing.
• Maintain test documentation, validation reports, and defect tracking.
• Support vehicle-level or pack-level integration and validation.
• Ensure compliance with automotive quality and safety standards incl. ISO 26262.

Skills

CAN communication

HIL testing

Python

CAPL

MATLAB/Simulink

CANoe

CANalyzer

Embedded testing

Diagnostics

Education

Bachelor's degree in Electrical Engineering or related field

Tools

MATLAB/Simulink

dSPACE

CANoe

CANalyzer

Vector tools

Job description

We are seeking a highly motivated BMS System Test Engineer to support validation and verification activities for Battery Management Systems (BMS) used in electric vehicles, energy storage systems, or battery-powered products. The ideal candidate will have experience in system-level testing, HIL validation, CAN communication, diagnostics, and battery system integration.

The engineer will work closely with hardware, software, controls, and validation teams to ensure reliable and safe BMS functionality under various operating conditions.

Key Responsibilities

• Develop and execute system-level test plans, test cases, and validation procedures for Battery Management Systems (BMS)
• Perform functional, integration, regression, and performance testing of BMS hardware and software
• Conduct Hardware-in-the-Loop (HIL) and bench-level testing for battery systems
• Validate battery protection features including over-voltage, under-voltage, over-current, thermal protection, and fault handling
• Analyze CAN logs, diagnostics, and test results to identify issues and support root cause analysis
• Work with cross-functional teams to troubleshoot and resolve system-level issues
• Automate test scripts and validation processes using Python, CAPL, or similar scripting tools
• Support verification of SOC, SOH, balancing, charging, and thermal management algorithms
• Use tools such as CANoe, CANalyzer, Vector tools, MATLAB/Simulink, or dSPACE for testing and analysis
• Maintain test documentation, validation reports, traceability matrices, and defect tracking records
• Support vehicle-level or pack-level integration and validation activities
• Ensure compliance with automotive quality and safety standards including ISO 26262

Required Qualifications

• Bachelor’s degree in Electrical Engineering, Electronics Engineering, Automotive Engineering, Computer Engineering, or related field
• 3+ years of experience in BMS testing, automotive system testing, or embedded system validation
• Strong understanding of lithium-ion battery systems and BMS functionalities
• Experience with CAN communication protocols and diagnostic tools
• Hands-on experience with HIL systems, test benches, or automated validation setups
• Knowledge of Vector tools such as CANoe and CANalyzer
• Familiarity with MATLAB/Simulink and embedded systems testing
• Strong debugging, analytical, and troubleshooting skills
• Good understanding of automotive validation processes and testing methodologies
• Excellent communication and technical documentation skills

Preferred Skills

• Experience with EV/HEV battery systems and high-voltage architectures
• Knowledge of AUTOSAR, UDS diagnostics, and Functional Safety (ISO 26262)
• Experience with Python, CAPL, or automation scripting
• Familiarity with dSPACE, NI, or ETAS test platforms
• Exposure to battery charging systems and thermal management validation
• Experience with SIL/MIL/HIL testing environments
• Understanding of cybersecurity requirements for automotive systems
• Master’s degree or relevant automotive certifications is a plus