Job description Salary: 65-95k€ (Annuel) Embedded Software Engineer – UAV & Autonomy M/F Contract type Permanent Location Munich (Hybrid / Approx. 2 days per week on-site for flight testing) Reference 2277 Contact The recruiting company Our client is a European start-up specializing in electronic warfare, secure communications, and precision localization technologies for the defense sector. Key points of the position Reporting to the engineering team, you will develop embedded software enabling autonomous navigation capabilities for UAV systems operating in GNSS-denied environments. Missions As an Embedded Software Engineer, your missions will include: Working directly with ArduPilot or PX4 flight stacks at source-code level (C++), developing custom drivers and modifying flight modes Implementing and debugging interfaces between custom sensors and flight controllers Integrating external position data into the flight controller using MAVLink protocols (e.g., VISION_POSITION_ESTIMATE, ODOMETRY) Analyzing and debugging complex flight logs to identify anomalies, particularly in EKF state estimation and system behavior Using SITL (Software In The Loop) simulation environments to validate software before deployment on real hardware Ensuring correct coordinate frame transformations (NED vs body-frame) for accurate local navigation and flight commands Supporting real-world testing and flight validation in collaboration with the hardware and field testing teams Necessary skills Strong programming skills in C++ and Python within embedded or robotics environments Experience working with ArduPilot or PX4 flight control systems, ideally at source-code level Solid knowledge of state estimation, sensor fusion, and Extended Kalman Filters (EKF) Experience integrating external sensors and systems using MAVLink protocols Comfortable analyzing flight logs and debugging complex real-world system behaviors Strong engineering rigor combined with a practical testing mindset Fluent English and German Security clearance Eligibility for German security clearance (SÜ2/Ü2) is required: German or EU citizenship mandatory. Salary 65–95k euros gross annual About RHESO.TECH A specialized recruitment agency https://www.rheso.tech/