Hire the Best Firmware Engineers
in Germany

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!

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.

I build firmware and low-level software that makes hardware actually work — reliably, in production, under real-world conditions. With 15+ years of embedded development experience, I specialize in ARM Cortex M0/M3/M4 firmware (STM32, ESP32), real-time systems on FreeRTOS, and industrial PLC software on Beckhoff/TwinCAT. I've shipped software for automated guided vehicles, robotic control systems, navigation sensors, and special machine construction — across industries including automotive, semiconductor, and medical robotics. What I typically help clients with: - Firmware development in C/C++ for STM32, ESP32, and other ARM-based MCUs - FreeRTOS task architecture, peripheral drivers (UART, SPI, I2C, CAN, DMA) - Communication protocols: CAN, MQTT, Modbus, OPC-UA, REST, Protobuf - Python tooling, test scripts, and HIL testing around embedded systems - PLC programming (IEC 61131-3) on Beckhoff/TwinCAT2/TwinCAT3 - Gateway development bridging robots, PLCs, AI servers, and external systems I work well on small, well-scoped projects — I give clear time and cost estimates upfront, communicate proactively, and deliver clean, documented code. Based in Germany (CET), available for async or scheduled calls.

Senior embedded software engineer with 10+ years shipping production firmware — from bare-metal MCU drivers to full RTOS architectures and Embedded Linux systems. I work on complex projects end-to-end: firmware design, build systems, testing infrastructure, and CI/CD. What I work on: ► Firmware development — C/C++ on ARM Cortex-M/R, FreeRTOS-based architectures, bare-metal drivers, hardware bring-up, OTA, secure boot, communication stacks (MQTT, CoAP, LwM2M, TLS, UART, SPI, I2C, CAN, BLE, LoRaWAN, LTE-M, NB-IoT) ► Embedded Linux — Buildroot, Yocto, Raspberry Pi, application and service development in C/C++, Python, Bash ► CMake & build systems — target-based architectures, cross-compilation toolchains, build optimization, migration from legacy Makefiles ► CI/CD for embedded — GitHub Actions, GitLab CI, Docker, hardware-in-the-loop testing, static analysis pipelines ► Safety-critical systems — SIL2 firmware, safety communication protocols (OSSD, FSI), deterministic state machines ► Audio & DSP — embedded audio pipelines, I2S/SAI, MIDI, OSC, real-time signal processing on MCUs Recent projects: • Lead firmware engineer, SIL2 human detection system — mmWave radar + thermal imaging, ARM Cortex-R5F/AM64x, FreeRTOS, C++17 (2025–2026) • IoT firmware, industrial container monitoring — ESP32, LoRaWAN, satellite comms, CAN bus, C++20 (2024) • Build system overhaul for a large C++/CMake video software codebase — reduced build times, modernized to target-based design (2024) • Embedded Linux video pipeline, professional cinema cameras — Xilinx VCU, H.265/HEVC, RTSP streaming, C++ (2023) Languages: C, C++, Python, Bash Safety-critical: SIL2, OSSD, deterministic state machines Embedded: FreeRTOS, bare-metal, ESP-IDF, Embedded Linux, Yocto, Buildroot Build systems: CMake, Ninja, Make, PlatformIO Toolchains: ARM GNU Toolchain, LLVM/Clang Protocols: MQTT, CoAP, LwM2M, RTSP, TLS, DTLS, CAN, FSI, RS485, I2C, SPI, UART, USB, NFC Wireless: BLE, LoRaWAN, NB-IoT, LTE-M, ZigBee Audio/DSP: I2S/SAI, MIDI, OSC Testing: Unity, Catch2, Google Test, Robot Framework CI/CD: GitHub Actions, GitLab CI, Docker Debugging: GDB, OpenOCD Hardware: STM32, ESP32, nRF52840, ARM Cortex-M/R/A, AM64x, Teensy, Raspberry Pi

I have extensive experience developing firmware for embedded devices, from creating device low level libraries and device drivers that directly interact with device registers to high level user application. I am available to help you meet your goals within your project budget and timeline. My goal is to provide highly efficient and compact solutions to you. Services I can offer you are as follows: - Firmware development in assembly or C/C++ for any MCU platform. - Linux Device Driver development for PCIe devices. - Computer Vision applications - Desktop applications to provide a user interface to your embedded devices I have worked with different embedded systems using following MCUs; - STM32F4 - Raspberry Pi - Arduino Technologies I have worked on - C/C++ for embedded developement - Python - OpenCV, Pytorch and Tensorflow for Computer Vision applications

Welcome to my profile. my motto is, customer satisfaction can only be guaranteed if development is carried out strictly according to defined development processes. For this reason and for your protection, I will only process orders where the customer can provide me with clearly formulated requirements. Of course, this is an accompanying process in which I am happy to provide assistance. Whether privately or professional, I work strictly according to the development model that I think fits best to your project (e.g. V-model). My typical software development approach (Lifecycle) looks like this: MS0: Determine framework conditions of the project MS1: Requirements specification MS2: Architectural design MS3: Implementation MS4: Testing and Verification MS5: Release MS5: Documentation MSX: Maintenance Due to years of work as an embedded software designer, I can now offer a wide repertoire of know how: Bootloader designs RTOS based designs Low Power designs Working with Git Designing Drivers Hardware Platforms: STM32 Cypress TI Silicon Labs Nordic Connectivity: BLE WiFi LoRa USB 2.0 Fieldbus If my repertoire appeals to you I would be pleased to hear from you. Regards, Daniel