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Software Engineer - Tooling

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

Posted Mar 19, 2026

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About this role

Software Engineer - Tooling 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 our GNC, ML, Embedded Software, and Validation teams scale, Harmattan AI requires dedicated internal software infrastructure to accelerate development and testing. Joining the Tooling team you will be responsible for developing a "state-of-the-art" drone simulator to support our advanced autonomous defence applications. This role offers high ownership and the opportunity to work at the intersection of software engineering, simulation, and AI robotics with direct mission impact. Responsibilities - Simulator Development : Design, develop, and maintain flight-simulation-related tools and features. - Architectural Design : Define technical solutions, including architecture, APIs, and UIs, to respond to specific project needs. - Pipeline Integration : Ensure all tooling integrates seamlessly into the company's CI/CD and data pipelines. - Performance Optimisation : Analyze simulator performance across various aspects and implement necessary improvements. - Cross-Functional Collaboration : Partner with GNC, ML, and Embedded teams to establish specifications for new features and ensure the tool meets user needs. - Documentation & Standards

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