Senior Software Engineer (C++)

The role

You will develop modern C++ components for autonomous ground systems. You will build Qt/QML operator applications and integrate ROS 2 nodes to connect onboard software with ground interfaces.

What you will do

• Develop modern C++ components from prototypes to production-ready software
• Build Qt/QML operator applications for telemetry, video streams and robot control
• Integrate and extend ROS 2 nodes and communications
• Test software through unit, integration and end-to-end testing in simulation and on real hardware
• Support field trials, investigate failures and turn findings into reliability improvements
• Maintain build, test and deployment workflows using CMake, Docker, Python and CI
• Document architecture decisions, configurations and test results

Required qualifications

• 3+ years of professional C++ development
• Solid grasp of C++17/20
• Practical concurrency skills including synchronization, thread pools, lock-free approaches and diagnosing race conditions
• Confidence investigating software issues with gdb, sanitizers, Valgrind or similar tools
• Hands-on experience building desktop interfaces with Qt5/Qt6 and QML
• Strong Linux skills including system administration, scripting and troubleshooting
• Python experience for automation and testing
• Docker for reproducible builds and deployment
• Experience with automated testing frameworks such as GoogleTest or pytest
• Upper-intermediate English for technical documentation and collaboration

Nice to have

• Experience with ROS 2, Zenoh or other robotics middleware
• Experience with UAVs or autonomous vehicles
• Experience with embedded Linux platforms such as NVIDIA Jetson
• Camera and video integration with RTSP or GStreamer
• ELRS or MAVLink
• Networking and VPN configuration
• Ground control applications such as QGroundControl or Mission Planner

Benefits

• Competitive salary and benefits package
• Opportunity to work with a highly innovative, international, and dynamic team
• Room for professional growth and development
• Participation in the company's success, with access to regular events, knowledge exchange and meetups

About the company

ARX is a dual-use technology company that specializes in developing autonomous unmanned systems and sensors for the European defence sector. Their systems assist NATO Armies and civilian first responders.