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Location: Bengaluru
Company: Schneider Electric
Role Summary
Responsible for developing, debugging, and maintaining firmware for industrial devices with a focus on low-level driver development, communication protocol stacks, and hardware-software integration. The role involves close collaboration with hardware teams, and system integrators to ensure reliable device operation in industrial environments.
Key Responsibilities
- Develop and maintain device drivers for microcontroller-based industrial hardware, including peripheral drivers (UART, SPI, I2C, ADC, GPIO, timers, DMA) and external device interfaces.
- Implement and integrate industrial communication protocol stacks —Modbus RTU/TCP, industrial Ethernet protocols as required by the product line.
- Design and implement real-time control logic within firmware, including state machines, interrupt-driven architectures
- Bring up new hardware — perform board bring-up, write and validate BSPs, and collaborate with hardware engineers on schematic reviews and signal integrity debugging.
- Write, review, and maintain firmware for safety-critical and reliability-critical applications in industrial settings (injectors, sensors, actuators, or similar devices).
- Debug firmware issues using oscilloscopes, logic analysers, JTAG/SWD debuggers, and protocol analysers. Perform root cause analysis on field failures and intermittent issues.
- Maintain firmware build systems, version control practices, and release processes. Write technical documentation, including interface specifications, driver API docs, and integration guides.
- Support integration with higher-level systems — provide technical inputs to PLC/SCADA teams on device behaviour, communication object dictionaries, register maps, and timing constraints.
Required Skillset
- Strong C programming (bare-metal and RTOS-based — FreeRTOS, Zephyr, or equivalent)
- Hands-on experience with ARM Cortex-M microcontrollers (STM32, NXP, TI, or similar)
- Solid understanding of MCU peripherals — UART, SPI, I2C, CAN, ADC, DMA, timers, watchdog
- Experience with industrial communication protocol (i.e. Modbus)
- Experience with wireless stack Zigbee, BLE
- Able to design, review and understand the wireless device specs
- Ability to read schematics and datasheets, and work with hardware engineers on debugging
- Proficiency with debugging tools — JTAG/SWD, logic analyzers, oscilloscopes, CAN/serial protocol analyzers
- Understanding of real-time constraints, interrupt priorities, and timing-critical firmware design
- Familiarity with embedded build toolchains (GCC ARM, Keil, IAR), Make/CMake, and Git-based workflows
- Experience writing clean, modular, well-documented embedded C with proper abstractions (HAL layers, driver APIs)
Good to Have
- Experience with power electronics firmware (AC-DC sensing, relay/contactor control, motor drive interfaces)
- Familiarity with CI/CD for embedded (automated builds, static analysis — PC-lint, MISRA checks)
