Embedded Software Engineer

Embedded Software Engineer (ARM Cortex-M) | Industrial Automation & IoT

Mid–Senior level (3+ years) | Only South America-based candidates

We are seeking a skilled Embedded Software Engineer on behalf of our client to develop firmware for industrial automation and IoT devices based on ARM Cortex-M microcontrollers.

Responsibilities

• Develop and optimize embedded firmware on ARM Cortex‑M microcontrollers
• Integrate RTOS (e.g., FreeRTOS, Zephyr) for real-time applications
• Implement low-level drivers and industrial protocols (CAN, Modbus, PROFINET)
• Collaborate with hardware and systems teams to interface with sensors and actuators
• Perform lab and field testing to validate firmware performance
• Maintain technical documentation and support safety and risk assessments
• Participate in code reviews, design iterations, and bug fixing
• Use Git and CI/CD pipelines for code management and testing

Required Skills

• Embedded C and C++ programming for ARM Cortex-M firmware
• Experience with ARM Cortex-M microcontrollers (e.g., STM32, NXP, TI, Silicon Labs)
• Familiarity with RTOS environments such as FreeRTOS or Zephyr
• Proficiency with embedded toolchains: GCC, IAR Embedded Workbench, or Keil MDK
• Knowledge of hardware communication protocols: I2C, SPI, UART, ADC/DAC
• Strong knowledge of industrial communication protocols such as CAN, Modbus, PROFINET, or similar
• Experience using debugging tools: JTAG, SWD, oscilloscopes, logic analyzers
• Use of version control systems: Git, GitLab or GitHub
• Familiarity with firmware validation techniques, including unit testing and static code analysis
• Understanding of industrial safety and functional safety standards, e.g., IEC 61508, and willingness to learn relevant certifications

Bonus Skills

• Experience with wireless industrial IoT protocols (BLE, Wi-Fi, LoRaWAN)
• Python scripting for test automation
• Secure bootloaders and firmware security best practices
• Sensor data acquisition and signal processing