Hire the Best Firmware Engineers
in Germany

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Kacper K.

Frankfurt (Oder), Germany

$80/hr
5.0
14 jobs

I help companies design, develop, and stabilize production-grade embedded firmware in C and C++. With 10+ years of experience, I take ownership of complex embedded projects end-to-end — from hardware bring-up and low-level drivers to RTOS architecture, BLE and wireless connectivity, Embedded DevOps, build systems, and automated testing. My core areas include: ► Embedded firmware development C/C++ on ARM Cortex-M and Cortex-R, bare-metal systems, FreeRTOS-based architectures, device drivers, hardware bring-up, debugging, OTA updates, secure boot, and production-oriented firmware architecture. ► Connected devices and IoT Firmware for BLE-connected, low-power, and battery-powered industrial and IoT products using MQTT, CoAP, LwM2M, BLE, LoRaWAN, Zigbee, LTE-M, NB-IoT, and satellite communication. ► Embedded DevOps & build infrastructure Modern target-based CMake, cross-compilation toolchains, Docker-based development environments, Python automation, dependency management, reproducible builds, embedded CI/CD, static analysis, test orchestration, and hardware-in-the-loop testing. I am particularly useful when a project needs: • ownership of an existing or new firmware codebase • stabilization of unreliable embedded software • architecture improvements without unnecessary rewrites • hardware/software debugging across system boundaries • modernization of embedded build, test, and delivery infrastructure • support moving from prototype to production Selected recent projects: • Lead Firmware Engineer for a SIL2 human-detection system using mmWave radar and thermal imaging — ARM Cortex-R5F, FreeRTOS, C++17, CMake, real-time I/O • Battery-powered industrial IoT firmware — ESP32, FreeRTOS, LoRaWAN, satellite communication, GNSS, low-power optimization • Low-power BLE e-ink display system — nRF52840, C++17, MQTT, Python gateway • Real-time embedded audio DSP firmware — STM32, C++20, FreeRTOS, DMA, CMake Core stack: C, C++, Python, bare-metal firmware, RTOS-based systems, FreeRTOS, CMake, cross-compilation toolchains, STM32, ESP32, nRF52, and ARM Cortex-M/R/A. Connectivity: MQTT, CoAP, LwM2M, BLE, LoRaWAN, Zigbee, LTE-M, and NB-IoT. Testing and delivery: Catch2, Unity, Google Test, unit testing, integration testing, hardware-in-the-loop testing, Docker, and embedded CI/CD. Embedded audio and DSP: real-time DSP, embedded audio pipelines, I2S/SAI, MIDI, and OSC.

  • Firmware
  • Embedded System
  • Microcontroller Programming
  • nRF52
  • ESP32
  • Real-Time Operating System
  • STM32
  • C
  • Python
  • C++
  • FreeRTOS
  • CMake
  • ARM Microcontroller
  • Continuous Integration
  • Bluetooth LE
  • MQTT
  • Internet of Things
  • LoRa
  • Digital Signal Processing
  • Docker
Rijo V.

Bochum, Germany

$50/hr
5.0
14 jobs

I bring 15+ years of international experience across firmware, hardware, PC-system software, and bespoke applications for embedded systems. I take products end-to-end—from concept and architecture through electronics, firmware, mechanical design, and production. In-house, I handle mid-scale builds (down to 0402 and fine-pitch BGAs) with pick-and-place, reflow, and full validation, source components globally, and coordinate seamlessly with external PCBAs for higher volumes. Instead of juggling multiple suppliers, you get one partner who integrates hardware, software, and mechanics into a cohesive, production-ready solution. If you’re looking to turn an idea into a reliable, manufacturable product, let’s connect.

  • Embedded System
  • C
  • C++
  • Freecad
  • Automotive
  • Linux
  • Multilayer PCB
  • WxWidgets
  • Software Architecture & Design
  • Manufacturing
  • Product Testing
  • Security Engineering
  • EasyEDA
  • LabVIEW
  • KiCad
Kabir S.

Bielefeld, Germany

$50/hr
5.0
1 jobs

I am an experienced Embedded Systems Engineer with strong skills in both hardware and firmware development, with over 13 years of continuous work in electronics, embedded systems, and sensors. Over the years, I have designed and developed solutions for IoT, industrial automation, and smart devices, from concept to production. My expertise includes: • Embedded software development (C/C++, Python, FreeRTOS, ESP-IDF, STM32 HAL) • PCB design and hardware development (Altium Designer, KiCad, low-power design, RF integration) • IoT and connectivity (Wi-Fi, BLE, LoRa, 868MHz RF, Ethernet, PoE) • System and sensor integration (sensors, displays, audio, power management, battery systems) I combine problem-solving skills with attention to detail to deliver reliable and optimized solutions for every project. Based in Germany, I collaborate effectively with international clients and consistently provide professional, on-time results. If you are looking for a dedicated engineer to bring your embedded ideas to life, let’s connect!

  • Embedded System
  • Firmware Programming
  • Microcontroller Programming
  • Raspberry Pi Firmware
  • ESP32
  • STM32
  • FreeRTOS
  • Altium Designer
  • KiCad
  • Hardware Prototyping
  • Hardware Design
  • Electronic Circuit Design
  • MQTT
  • Wireless Communication
  • LoRa

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