Embedded Firmware Engineer

POSITION SUMMARY

We’re looking for an Embedded Firmware Developer to design, implement, and maintain firmware for our connected devices, primarily on STM32 microcontrollers with RTOS-based architectures. You’ll work end-to-end: from board bring-up and driver development to low-power optimizations, connectivity stacks, and production-ready releases. Close collaboration with our hardware and backend software teams is part of your daily routine.

PRIMARY RESPONSIBILITIES (include but are not limited to)

·         Design and implement embedded firmware for STM32 (ARM Cortex-M) platforms.

·         Develop device drivers (I²C, SPI, UART, ADC/DAC, GPIO, timers, PWM, DMA)

·         Build RTOS-based applications (e.g., FreeRTOS or similar): task design, scheduling, inter-task communication, and concurrency control.

·         Perform board bring-up, bootloader development, and in-field firmware update (DFU/FOTA) solutions.

·         Optimize for power consumption, memory footprint, and real-time performance.

·         Integrate sensors and modules (temperature, humidity, GNSS, BLE, LTE-M/NB-IoT, Wi-Fi) including protocol stacks.

·         Ensure reliability and safety through defensive coding, watchdogs, diagnostics, fault handling.

·         Create robust test coverage; use oscilloscopes, logic analyzers, and debuggers (SWD/JTAG).

·         Collaborate with hardware engineers on schematics/layout reviews and DFM/DFT considerations.

·         Document architecture, interfaces, and design decisions; contribute to code reviews.

·         Support certification and compliance efforts (EMC, safety, regulatory) as needed.

COMPETENCIES & PERSONAL ATTRIBUTES

·         Practical RTOS experience (e.g., FreeRTOS, Zephyr, RTX) including task design, synchronization, and ISR best practices.

·         Solid hardware knowledge: reading schematics, understanding analog/digital interfaces, power management, and basic signal integrity.

·         Strong electrical engineering fundamentals: embedded peripherals, timing, EMC awareness, and sensor integration.

·         Skilled with debugging tools (ST-Link/J-Link, GDB), instrumentation (scope, logic analyzer), and profiling.

·         Experience with version control (Git), CI/CD for firmware, and reproducible builds (CMake/Make).

·         Clear, structured problem-solving and ownership mindset; comfortable in an agile environment.

·         English required; German is a plus.

QUALIFICATIONS AND EDUCATION REQUIREMENTS

·         Degree in Electrical Engineering, Computer Engineering, Embedded Systems, or equivalent experience.

·         3+ years of hands-on embedded development (C/C++), preferably with STM32 or similar