Job Summary

Position - Lead BMS/Wiring Harness _ Advanced BMS

Location: Hyderabad

Employment type - Full time

Position Reports to Head - NPD

Job Roles and Responsibilities

- Develop, integrate and validate Battery Management Systems (BMS) for Li-ion battery packs and BESS systems.
- Define BMS requirements based on cell characteristics, pack configuration, inverter/charger requirements and system safety requirements.
- Work on CAN/CAN-FD, Modbus, Ethernet and other communication protocols.
- Develop and maintain CAN database (DBC), communication matrix and diagnostic messages.
- Perform BMS integration with inverter/PCS, charger, EMS, vehicle controller and other external systems.
- Configure and validate BMS parameters, limits, alarms and fault-handling strategies.
- Perform cell balancing strategy development and validation.
- Analyze cell voltage, temperature, current and SOC data to identify battery performance and safety issues.
- Understanding of BMS hardware architecture and schematics.
- Develop BMS DV/PV test plans and test cases.
- Perform pack-level BMS validation under: Charge/discharge, Over-voltage, Under-voltage, Over-current, Short-circuit, Over-temperature, Under-temperature, Cell imbalance, Sensor failure, Communication failure, Contactor failure, Pre-charge failure.
- Knowledge of ISO 26262 and functional-safety concepts is preferred.




- Design LV and HV wiring harnesses for battery packs and BESS.
- Develop harness architecture, circuit diagrams, schematics, and pin-to-pin wiring.
- Integrate harnesses with battery modules, BMS, HV box, contactors, fuses, current sensors, and connectors.
- Ensure proper creepage and clearance for HV systems.
- Define HV/LV segregation and routing.
- Support battery-pack mechanical design to ensure adequate harness clearance and protection.
- Review harness accessibility for assembly and service.
- Design cell-voltage sensing and temperature-sensing harnesses.
- Perform fault injection and boundary-condition testing.
- Analyze CAN logs and battery test data.
- Support battery certification and customer validation activities.

Educational Qualifications Requirements

- Bachelor s degree in Electrical Engineering / Electrical Electronics, Electronics Communication
- Must have 8 - 10 Years experience in design, BMS Software Controls, BMS hardware architecture and schematics, Testing Validation, Knowledge of ISO 26262 and functional-safety

Disclaimer: This job posting has been aggregated from external source. Role details, content, and availability are subject to change. Applicants are advised to confirm the latest information directly on the company website before applying.

📌 Lead BMS/Wiring Harness (Hyderabad)
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