Senior Embedded Firmware Engineer for IoT & Edge

Qareeb; On; On-site; EUR 65,000 - 90,000; Full time

Job summary

Qareeb is seeking a Senior Embedded Firmware Engineer to design and develop firmware for IoT devices and edge computing products. You will work with ESP32 and STM32 microcontrollers, focusing on low-power design, secure communication, and robust protocol implementations.

This role requires hands-on embedded development expertise, a strong understanding of hardware/software integration, and the ability to deliver production-ready firmware for mission-critical systems.

Qualifications

• 4+ years in embedded firmware development with C/C++.
• Strong ESP32 (ESP-IDF) and STM32 (CubeMX/CubeIDE) experience.
• Hands-on experience with FreeRTOS (multi-tasking, resource sharing, synchronization).
• Deep understanding of sleep modes, RTC integration, and watchdogs.
• Proficiency with UART, SPI, I2C, ADC/DAC, GPIO, LoRa, Wi-Fi, BLE.
• Experience with OTA updates, bootloaders, secure flashing.
• Familiarity with basic DSP techniques for sensor data filtering and calibration.

Responsibilities

• Develop and maintain firmware for ESP32 (ESP-IDF) and STM32 (CubeMX, CubeIDE, HAL/LL drivers).
• Implement and optimize RTOS-based applications using FreeRTOS (tasks, queues, timers, synchronization).
• Design and test low-power strategies (deep sleep, RTC, watchdogs) for solar/battery-powered devices.
• Integrate and manage sensors and actuators via UART, SPI, I2C, ADC/DAC, GPIO.
• Implement and maintain wireless communication stacks (LoRa, Wi-Fi, BLE).
• Develop OTA firmware update pipelines, bootloaders, and secure firmware upgrade processes.
• Apply signal processing techniques for accurate and reliable sensor data handling.
• Perform debugging and validation using JTAG/SWD, oscilloscopes, and logic analyzers.
• Collaborate with hardware engineers on PCB bring-up and hardware/software integration.
• Document designs, implementation details, and contribute to protocol specifications.

Skills

Embedded C/C++

ESP32 (ESP-IDF)

STM32 (CubeMX/CubeIDE)

FreeRTOS

Low power design

UART/SPI/I2C

Secure firmware updates

Tools

ESP-IDF

CubeMX

CubeIDE

HAL/LL

FreeRTOS

JTAG/SWD

Oscilloscopes

Job description

Qareeb is seeking a Senior Embedded Firmware Engineer to design and develop firmware for IoT devices and edge computing products. You will work with ESP32 and STM32 microcontrollers, focusing on low-power design, secure communication, and robust protocol implementations.

This role requires hands-on embedded development expertise, a strong understanding of hardware/software integration, and the ability to deliver production-ready firmware for mission-critical systems.