BMS Developer M/F

À propos du poste

As BMS developer, you are the technical owner of the Battery Management System for battery packs. You will be responsible for defining, challenging, and validating a BMS solution developed with an external supplier, while ensuring its performance, safety, and system integration. You guarantee that the delivered BMS meets all requirements through independent verification and deep system understanding.

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 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