Bms Firmware Development Engineer

Techlanz; Bengaluru; On-site; INR 900,000 - 1,500,000; Full time

Job summary

Techlanz in Bengaluru is seeking an experienced embedded firmware engineer to lead end-to-end BMS ECUs, from architecture through CI/CD releases. You will translate system safety requirements into firmware tests and implement drivers, bootloaders, fault management, and sensor interfaces.

You will own the BMS communications stack (CAN/CAN-FD, LIN, UART, Ethernet) and telemetry, collaborate with algorithm teams, and drive lab validation with MIL/SIL/HIL testing.

Qualifications

• 3+ years of embedded firmware experience with ownership of modules or projects.
• Strong C programming skills (bare-metal / RTOS).
• Knowledge of FreeRTOS, bare-metal programming, and Task schedulers.
• Deep domain experience in Battery Management Systems or related firmware.
• Hands-on experience with automotive/industrial field buses (CAN/CAN-FD, LIN, Ethernet) and diagnostics.
• Experience with firmware development lifecycle: Git, CI pipelines, unit testing frameworks, code reviews.
• ISO 26262 / IEC 61508 safety experience and safety cases knowledge.
• OTA update frameworks, secure boot, hardware root-of-trust, cryptographic signing.
• Experience porting/optimizing firmware across MCUs (NXP, STM32, Renesas, MPS) and BMS IC vendors.
• Experience in AFE and ADC modules.
• Data pipelines/telemetry knowledge (edge-to-cloud, data compression, telemetry security).
• Knowledge of GNSS, GPS, BLE; model-based design workflows (MATLAB/Simulink MIL/SIL/HIL).

Responsibilities

• Lead end-to-end firmware development for BMS ECUs (architecture, implementation, reviews, CI and releases).
• Define and translate system and safety requirements into firmware requirements and test cases; support requirements management.
• Develop drivers, bootloader, WDT, fault management, diagnostics, and sensor interfaces.
• Implement BMS parameter configurations and battery-control algorithms in firmware; collaborate with algorithm teams.
• Design and own BMS communications stack (CAN/CAN-FD, LIN, UART, Ethernet, SPI/ICs) and data telemetry uplinks (MQTT/HTTPS).
• Lead hardware-firmware integration, calibration and validation: lab testing, MIL/SIL/HIL, automated test harnesses and production tests.
• Ensure firmware safety compliance (ISO 26262/ASIL), EMC, and functional safety; coordinate with safety engineers for FMEA.

Skills

C programming

RTOS

CAN/CAN-FD

Firmware ownership

Embedded systems

Tools

FreeRTOS

AUTOSAR

Git

CI/CD

Unit testing

JTAG/SWD

MATLAB/Simulink MIL/SIL/HIL

Job description

Work mode: On-Site

Employment type: Full-Time

Responsibilities

• Lead end-to-end firmware development for BMS ECUs (cell/board/module/pack level): architecture, implementation, code reviews, CI and releases.
• Define and translate system and safety requirements (functional non-functional) into firmware requirements and test cases; support requirements management.
• Develop drivers, bootloader, WDT, Fault Management, diagnostics, Sensor interface GPIO control
• BMS Parameter configuration,
• Implement and maintain battery-control algorithms interfaces (SOC/SOH/State estimation, balancing control, thermal management controls, Fault Management) in firmware; collaborate with algorithm/controls team.
• Design and own BMS communications stack (CAN/CAN-FD, LIN, UART, Ethernet, SPI/I C to sensors/ICs) and data telemetry uplinks (MQTT/HTTPs).
• Lead hardware-firmware integration, calibration and validation: lab testing, MIL/SIL/HIL, automated test harnesses and production test procedures.
• Ensure firmware satisfies safety (ISO 26262/ASIL where applicable), EMC, and functional safety requirements; coordinate with safety engineers for FMEA and safety cases.
• Improve firmware development process: coding standards, static analysis, unit integration testing, CI/CD, over-the-air (OTA) update design and secure boot.
• Drive supplier and vendor interactions for BMS ICs, charge controllers, and test equipment; create firmware integration plans for suppliers.
• Actively participate in battery homologation activities and proactively resolve the issues

Qualifications

• 3+ years of embedded firmware experience, with proven ownership of modules or projects and demonstrated technical impact (individual contributor or team leadership exposure)
• Strong C programming skills (bare-metal / RTOS); experience with FreeRTOS, AUTOSAR, or equivalent.
• Knowledge of FreeRTOS, baremetal programming, Task scheduler
• Deep domain experience in Battery Management Systems or battery-adjacent firmware (cell monitoring ICs, balancing, pack-level control).
• Hands‑on experience with automotive/industrial field buses (CAN/CAN-FD, LIN, Ethernet) and diagnostics.
• Experience with firmware development lifecycle: version control (git), CI pipelines, unit testing frameworks, code review practices.
• Solid understanding of battery electrochemistry concepts (SOC/SOH basics, cell balancing implications) and thermal management.
• Practical exposure to test validation: HIL, MIL, automated test benches and debug tools (JTAG/SWD, oscilloscopes, protocol analyzers).
• Communication skills to interface with systems, hardware, algorithm and product teams; English fluent.
• ISO 26262 / IEC 61508 safety experience, familiarity with safety case and FMEA deliverables.
• Experience with OTA update frameworks, secure boot, hardware root-of-trust and cryptographic signing.
• Experience porting/optimizing firmware across MCUs (NXP, STM32, Renesas, MPS) or BMS IC vendors.
• Experience in AFE and ADC modules
• Data pipelines/telemetry knowledge (edge-to-cloud messaging, data compression, telemetry security).
• Knowledge of GNSS, GPS, BLE and other connectivity module is preferred
• Familiarity with model-based design workflows (Matlab/Simulink MIL/SIL/HIL integration)

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