BMS Developer M/F

Main responsibilities :

1. BMS Technical Ownership & System Architecture

• Own the end-to-end BMS architecture at system level
• Co defines, with the battery pack architect, functional and technical requirements based on battery pack and vehicle constraints
• Specify detailed performance targets of the BMS (accuracy, timing, thresholds, robustness)
• Ensure BMS consistency with cell behavior and overall battery system
• Is responsible for design justification documents creation and maintenance into PLM system

2. Supplier Management & Technical Challenge

• Act as the technical owner of the BMS delivered by the supplier
• Review, challenge, and approve:
• Hardware and software design
• Algorithms (SOC, SOH E and SOH R, SOP, balancing, diagnostics)
• Available and acceptable max power Algorithm
• Lead BMS technical reviews
• Identify gaps, manage risks, and drive corrective actions
• Ensure full alignment between supplier deliverables and internal expectations

3. Verification, Validation & Acceptance

• Define and own the independent BMS verification strategy
• Establish requirements traceability and validation matrix
• Review and approve supplier validation plans and results
• Design and execute internal validation activities:
  • SIL / MIL / HIL testing
  • Battery pack and system-level validation
  • Fault injection and edge-case testing
  • Define clear acceptance criteria and ensure compliance before release
  • Ability to tune the BMS software based on calibration test outcomes

  4. Functional Safety Leadership

  • Define and drive functional safety activities in compliance with ISO 26262
  • Contribute to and/or own:
  • HARA and ASIL allocation
  • Functional and Technical Safety Concepts
  • Safety case and safety validation
  • Ensure supplier compliance with safety requirements
  • Manage safety-related risks, anomalies, and residual risks

  5. Electrical Architecture & Component Strategy

  • Define battery pack electrical architecture in collaboration with system leader
  • Select and dimension key components (contactors, fuses, sensors, etc.)
  • Define fault management and redundancy strategies
  • Ensure safe and reliable operation under all conditions

  6. BMS Algorithms, Calibration & Performance

  • Define and validate BMS calibration strategy using cell data (SOx, OVP, UVP, OTP, etc.)
  • Review and benchmark supplier algorithms performance
  • Define KPIs for accuracy, robustness, and response time
  • Develop and validate thermal runaway detection strategies

  7. System Integration & Interface Management

  • Ensure integration of BMS into the full battery system and vehicle environment
  • Manage electrical and communication interfaces (CAN, etc.)
  • Resolve system-level issues involving BMS, cells, and power electronics
  • Ensure coherent system behavior under normal and fault conditions

  8. Testing, Data Analysis & Continuous Improvement

  • Define and operate internal test setups (HIL, cell simulators, CAN tools)
  • Analyze test and field data to identify improvement opportunities
  • Lead root-cause analysis of system failures
  • Feed lessons learned into next design iterations

Requirements :

• Master’s degree (Bac+5) or PhD in Electrical Engineering, Embedded Systems, or Power Electronics—or equivalent qualification
• Minimum of 5 years of experience in battery systems engineering in an automotive OEM, Tier 1 supplier, or pack integrator context
• Proven experience specifying, validating, or auditing a BMS solution developed by an external supplier
• ISO 26262 Functional Safety Engineer certification (TUV or equivalent) is strongly desirable.
• Fluent English mandatory.
• Willingness to travel.
• Knowledge of Python, MATLAB, Simulink
• DFMEA and system risk analysis, Vector CANoe / CANalyzer