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Software Engineer

Harmattan AI - Paris, Île-de-France, France

Posted Oct 6, 2025

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About this role

Software Engineer Paris, Île-de-France, France 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

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