Battery System Test Engineer

Global Connect Technologies; Milwaukee (WI); On-site; USD 90,000 - 130,000; Full time

Job summary

Global Connect Technologies in Milwaukee, WI, is seeking a test engineer to analyse BMS system and software requirements, derive verification criteria, and develop test specifications and reports.

You will perform functional testing of BMS features, conduct ECU and system-level testing with HIL/SIL, validate behavior under fault conditions, and automate test cases while maintaining traceability across requirements and test cases.

Qualifications

• Experience deriving verification criteria from BMS requirements.
• Experience creating system test specs and reports.
• Experience validating BMS functions under normal and fault conditions.
• Experience with CAN/CAN FD tracing and testing.

Responsibilities

• Analyse CAN logs and diagnostic traces to identify failures.
• Automate BMS test cases where applicable.
• Maintain traceability between requirements and test cases.
• Participate in reviews with cross-functional teams.
• Support test coverage analysis and release readiness.

Skills

BMS testing

CAN/CAN FD testing

UDS diagnostics

HIL/SIL testing

Test automation

Tools

HIL hardware-in-the-loop

CAN tools

Job description

• Analyse BMS system and software requirements and derive verification criteria and test cases.
• Develop and maintain system test specifications, test procedures and test reports.
• Perform functional testing of BMS features, including: Cell voltage monitoring, SoC, SoH, SoP, Battery protection and Charging/discharging functions
• Perform ECU and system-level testing using HIL/SIL test environments.
• Validate BMS behaviour under normal, boundary and fault conditions.
• Perform fault-injection testing, such as sensor faults, communication failures and electrical fault conditions.
• Test vehicle communication through CAN/CAN FD, including signal monitoring and message validation.
• Perform UDS diagnostic testing, including DTC validation, diagnostic services and fault recovery.
• Analyse CAN logs, diagnostic traces and test results to identify root causes of failures.
• Automate BMS test cases where applicable.
• Maintain bidirectional traceability between system requirements and system test cases.
• Participate in requirement reviews, test reviews and issue-resolution discussions with system, software, hardware and FuSa teams.
• Support test coverage analysis and release/readiness reporting.