Software Engineer

Harmattan AI is hiring a Software Engineer in Paris for its Ground Control Systems team, working on Android-based drone controller software for professional UAV operations. The role focuses on adapting and extending the QGroundControl platform in C++ and Qt, integrating the software with custom hardware controls, and keeping the app reliable across Android versions and device releases. It also involves working with embedded, electronics, and QA teams to support field validation and hardware/software integration. The position suits someone with a master’s degree and at least three years of software development experience in C++ and Qt for desktop or embedded applications.

ABOUT US Harmattan AI is a next-generation defense prime building autonomous and scalable defense systems. Following the close of a $200M Series B, valuing the company at $1.4 billion, we are expanding our teams and capabilities to deliver mission-critical systems to allied forces. Our work is guided by clear values: building technologies with real-world impact, pursuing excellence in everything we do, setting ambitious goals, and taking on the hardest technical challenges. We operate in a demanding environment where rigor, ownership, and execution are expected. ABOUT THE ROLE As a Software Engineer within the Ground Control Systems (GCS) team, you will play a central role in developing Harmattan AI’s new range of drone controllers — high-performance, Android-based control stations designed for professional UAV operations. You will adapt and extend the open-source QGroundControl platform (C++/Qt) to integrate seamlessly with our proprietary hardware, adding new features and ensuring reliability, performance, and scalability across missions. RESPONSIBILITIES - App Development: Design, develop, and optimize our QGroundControl-based application using C++ and Qt. - Hardware Integration: Adapt the app interface with physical controls (joysticks, buttons, switches, touchscreen) for a cohesive operator experience. - Feature Implementation: Translate user needs and mission requirements into new functionalities and UX/UI improvements. - Platform Maintenance: Port and maintain the app across Android versions, ensuring performance, compatibility, and security. - Deployment: Manage app updates and releases across our device fleet. - Collaboration: Work closely with embedded and electronics teams to ensure smooth hardware/software integration and with QA for field validation. CANDIDATE REQUIREMENTS - Master’s degree in Software Engineering or related field. - 3+ years of experience in software development: C++ and Qt for desktop or embedded applications. - Experience with Android development (Java or C++/NDK). - Familiarity with UX/UI design principles and cross-platform app optimization. - Experience in robotics or drones environments is a strong plus. - Knowledge of MAVLink, PX4, or ground control systems is an advantage. - English proficiency (reading and writing technical documentation). - Versatile, autonomous, and eager to learn in a fast-evolving technical environment. LOCATION AND COMMITMENTS - Contract Type: Permanent contract (CDI) - Work Schedule: Full-time - Availability: ASAP - Location: Paris We look forward to hearing how you can help shape the future of autonomous defense systems at Harmattan AI.