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Software Engineer - Mission Execution

Harmattan Ai - Paris, France - In-office - posted 2026-10-05

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Harmattan AI is a next-generation defense prime building autonomous and scalable defense systems. Following a $200M Series B at a $1.4B valuation, the company is expanding teams to deliver mission-critical systems to allied forces. As a Software Engineer in Mission Execution, you will build the software infrastructure that translates mission plans into reliable, real-time behavior across fleets of autonomous robots and multi-agent systems. You'll own the mission execution backbone—the systems that guide, orchestrate, and coordinate autonomous agents in the field. Key responsibilities include: - Designing and building mission execution infrastructure that converts planned missions into reliable, real-time behavior across autonomous system fleets - Developing scalable backend services and APIs for mission guidance, orchestration, agent communication, and execution - Establishing and maintaining high quality standards through CI/CD pipelines, testing, code review, observability, and release discipline - Writing production-grade C++ and Python for real-time, resource-constrained environments - Partnering with Mission Planning and product teams to ensure algorithms integrate cleanly, are thoroughly tested, and deployable in field conditions - Analyzing logs and telemetry from tests and live operations to identify failure modes and drive systemic improvements The role demands rigor, ownership, and execution in a demanding environment where reliability and predictability are mission-critical. REQUIREMENTS: - Education: M.S. or Ph.D. in Computer Science, Robotics, Aerospace Engineering, or related field; or equivalent practical experience - Technical skills: Strong coding proficiency in C++ and Python; solid software engineering fundamentals (system design, concurrency, testing, debugging) - Experience: Demonstrated track record building and shipping production software, ideally with distributed or real-time systems - Nice to have: Robotics, embedded software, or video game development experience (game engines, simulation, deterministic replay, tooling); aerospace or defense background; familiarity with simulation frameworks - Mindset: Strong communication skills, rigor, ownership mentality, and instinct for quality - Commitment: 100% dedication to Harmattan AI's mission and vision, ready to go the extra mile for operational excellence

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