Freelancer profile translated to English.
Back to original languageAbout Steffen
I offer support in the development of embedded software projects – from conception to commissioning.
Focus areas:
- Embedded software development in C/C++ for microcontrollers (e.g., STM32, nRF, ESP32, Atmel) and embedded Linux systems
- Real-time operating systems such as FreeRTOS and Zephyr
- Backend development with Golang and Python
- Frontend development with JavaScript
- Development and control of LED matrix displays
- Support in hardware development with KiCad or Altium Designer
Upon request, I also undertake technical documentation, conduct training sessions or project handovers for employees, and assist with the commissioning of customer projects.
As a graduate in electrical engineering, I am also experienced in the safe use of common measuring equipment and in reading and understanding circuit diagrams.
German
Native or bilingual
English
Conversational
Can work on-site
Landkreis Karlsruhe (up to 50km)
Experience
- Mittelständisches UnternehmenEmbedded Software DevelopmentMarch 2025 - Today (1 year and 3 months)
- Further development of STM32 microcontroller software for a benchtop pump in Embedded C
- Implementation of a basic structure for FreeRTOS
- Development of a customer-specific UART service protocol
- Implementation of an update function via UART for encrypted firmware updates
- Creation of a Python script for generating encrypted firmware update images
- Implementation of a UART protocol for reading and controlling a flow meter
- Development of a function for storing user data on an SPI EEPROM with multi-level redundancy
- Implementation of a Modbus RTU slave function
- Creation of extensive documentation of software components in UML
- Smight GmbHFreelancer – Software DevelopmentMarch 2025 - December 2025 (9 months)76 Karlsruhe, Germany• • Creation of a Proof of Concept (PoC) for reading various short-circuit indicators (KSAs) in medium-voltage systems via Modbus RTU in Python under Windows• • Development of low-latency software for capturing KSA data and an SPI temperature sensor, including evaluation and transmission via gRPC on an embedded Linux system (Balena OS)• • Creation of software tests for pytest• • Creation of a Docker container for the application• • Commissioning of a test stand for the application• • Support of hardware development during the commissioning of a hardware prototype• • Creation of comprehensive documentation in Confluence
- Kurz Industrie-Elektronik GmbH,Freelancer – Software DevelopmentAugust 2023 - November 2024 (1 year and 3 months)Remshalden, BW, Germany• • Definition and implementation of a protocol for data exchange between multiple microcontrollers via SPI, Bluetooth, and UART• • Implementation of low-latency Bluetooth data transmission software on a microcontroller using the nRF Connect SDK in Embedded C and Zephyr OS. With multiple participants (multilink)• • Control of BLDC motors on a microcontroller using STM Motor Control in Embedded C• • Evaluation of software frameworks (LVGL and Segger emWin) for a graphical user interface on a microcontroller• • Commissioning of a motor control hardware component
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Education
- Study of Electrical Engineering – Information Technology (B. Eng.)Karlsruhe University of Applied Sciences2018Neben den Grundlagen der Elektrotechnik lagen die Schwerpunkte bei der (digitalen) Signalverarbeitung, Nachrichtenübertragung und Software Entwicklung.