Embedded Software Engineer / Firmware Engineer (Agri-Tech / Sensor Systems) (m/f/d)

In this role you will own firmware for Stenon’s soil sensor system, turning hardware measurements into reliable field-ready data. You will collaborate with hardware, optics, and mechanical teams to deliver robust, power-efficient firmware that handles sensors, data processing, and field communication. You’ll contribute to the full device lifecycle from prototype to deployment in challenging outdoor environments. This is a hands-on, impact-driven opportunity to advance real-time soil analytics for farmers worldwide.

• Real-World Impact: hardware used in farming
• Ownership & Growth: fast-growing scale-up with flat hierarchies
• Collaborative culture: international, hands-on team
• Year-End Break: paid company-wide closure
• Seamless commuting: Berlin/Potsdam or Deutschland-Ticket
• Team retreats and fully stocked kitchen

• Develop and debug firmware for soil measurement devices
• Create software and hardware tools for diagnostics, testing, and validation
• Interface sensors to MCU or SOM
• Document code and participate in design/code reviews
• Collaborate with hardware and software engineers to define interfaces and protocols
• Assist with hardware-related software troubleshooting
• Support bring-up and debugging of circuit boards

• Degree in Electrical Engineering, Computer Science or related field
• 3-5 years of relevant embedded firmware experience
• Expert knowledge of C/C++
• Experience with bare-metal firmware on STM32 (STM32CubeIDE, RTOS a plus)
• Strong understanding of ARM architecture and peripherals
• Experience with embedded communication protocols (UART, I2C, SPI, CAN; USB/ISOBUS/SMBus a plus)
• Extensive experience writing sensor drivers
• Proficiency with Git and build pipelines
• Comfort with Linux shell and reading datasheets
• Strong electrical engineering fundamentals and lab equipment skills (oscilloscopes, logic analyzers)
• Preferred: knowledge of Python

• Collaborative mindset
• Troubleshooting and analytical thinking
• Strong communication and documentation
• C/C++ programming for embedded systems
• Embedded systems firmware development (bare-metal, STM32)
• Sensor driver development