We are looking for a passionate Embedded Firmware Developer with 1.52 years of hands-on experience in developing firmware for IoT controllers. You will work on next-generation connected devices involving ARM-based microcontrollers, low-power design, and wireless connectivity. The role requires strong embedded C/C++ skills, understanding of IoT communication protocols, and an ability to work closely with hardware and software teams to deliver robust, production-grade firmware solutions.

Key Development

Design, develop, and maintain firmware for ARM-based IoT microcontrollers (e.g., STM32, SAMD, nRF52), ESP32 etc
Integrate wired and wireless communication interfaces (UART, I2C, SPI, RS485, Ethernet, LoRa, LoRaWAN, BLE, and Wi-Fi)
Develop firmware for sensor data acquisition, actuator control, and IoT networking (MQTT/HTTP/TCP-IP).
Write optimized, modular, and maintainable C/C++ code suitable for low-resource systems.

Hardware & Integration

Configure and optimize microcontroller peripherals (ADC, DAC, timers, GPIO, interrupts).
Develop device drivers for sensors, actuators, and communication modules.
Troubleshoot and debug hardware-firmware issues using JTAG, oscilloscopes, and analyzers.
Collaborate with hardware engineers during board bring-up and design validation.

Performance & Reliability

Optimize firmware for low power and efficient memory usage.
Implement power management features (sleep modes, wake-up events).
Design state machines and multitasking architectures
Conduct firmware testing, debugging, and validation.

Documentation & Version Control

Maintain detailed firmware documentation (architecture, APIs, design decisions).
Use Git for source control and collaborative development.
Contribute to design reviews, code reviews, and continuous improvement initiatives.

Preferred Application Domains

Experience with Agricultural IoT systems such as soil monitoring, irrigation control, or weather sensing is a strong plus.
Familiarity with environmental data logging and remote equipment control is advantageous.

Required Qualifications

1.52 years of professional experience in embedded firmware development.
Proficiency in C/C++ for embedded systems.
Experience with ARM-based microcontrollers (STM32, SAMD, nRF5x), ESP32 etc.
Working knowledge of LoRa/LoRaWAN, BLE, and Wi-Fi protocols.
Experience with UART, I2C, SPI, RS485, Ethernet communications.
Hands-on debugging with GDB, JTAG/SWD, and protocol analyzers.
Familiarity with RTOS concepts (FreeRTOS, Zephyr) or bare-metal systems.
Strong understanding of network protocols (MQTT, HTTP, TCP/IP).
Good documentation and version control practices (Git).

Nice-to-Have Skills

Experience with OTA updates, low-power design, and secure boot mechanisms.
Familiarity with FreeRTOS, Zephyr, or Nordic SoftDevice.
Exposure to CI/CD pipelines for embedded development.
Experience with agriculture or industrial IoT Bachelors degree in Electronics, Electrical, Computer Engineering, or related technical field.
Equivalent hands-on experience will also be considered.

Tools & Technologies

Toolchains: GCC/ARM, STM32CubeIDE, Segger Embedded Studio, PlatformIO.
Debugging: JTAG, SWD, Oscilloscope, Logic Analyzer.
Version Control: Git, GitHub/GitLab.
RTOS: FreeRTOS, Zephyr.
Networking: MQTT, HTTP, TCP/IP

(ref:hirist.tech)

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Embedded Firmware Developer