Mechanical Engineer (Electronic Warfare) at Harmattan AI (Paris, France)
Harmattan AI· Paris, France·
Role details
Harmattan AI at a glance
France's first defense-tech unicorn, building attritable AI-piloted strike, interception, and ISR drones for allied militaries.
Harmattan AI is a vertically integrated defense prime building autonomous drone systems for allied militaries. It designs the full stack, from airframes and payloads to embedded compute and the autonomy algorithms that let drones sense, decide, and act at the edge without GPS or a network link, coordinated across a swarm by its mission-orchestration layer.
$242M raised · latest: Series B · $200M · January 2026 · backed by Dassault Aviation, FirstMark Capital, Atlantic, Motier Ventures
Job description
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 Mechanical Engineer within our Electronic Warfare team, you will design the mechanical structures and packaging that house and protect our EW/SIGINT electronics in demanding field conditions – from concept to field deployment. You will translate RF and electronic constraints into robust mechanical designs, working hand-in-hand with hardware, software, GNC and ML teams.
RESPONSIBILITIES
- RF Electronic Packaging: Design mechanical packaging for RF and high-power electronics (a core requirement of the role).
- Thermal Management: Design thermal solutions for high-power, high-density electronics.
- Shielding & Cabling: Integrate EMI/RF shielding and manage cable routing and constraints.
- Mechanical Design: Own mechanical design from concept through prototyping and validation.
- Technical Coordination: Collaborate across HW, software, GNC and ML teams on integration and technical interfaces.
- System Reviews & Documentation: Contribute to design and architecture reviews and maintain documentation and traceability.
CANDIDATE REQUIREMENTS
- Experience in RF electronic packaging is a must.
- Previous RF experience (radar, radio or EW) is a strong plus, to keep the associated constraints in mind (shielding, thermal, cabling, etc.).
- Strong background in mechanical design, thermal management and packaging.
- Broad engineering culture with understanding of electrical and embedded systems.
- MSc in Mechanical Engineering; PhD is a plus.
- Rigorous, structured and mission-driven mindset with strong analytical skills.
- Excellent communication and documentation abilities.
We look forward to hearing how you can help shape the future of autonomous defense systems at Harmattan AI.
Why work at Harmattan AI
- Culture: “Elite builders” who “thrive on complexity, move with urgency, and own their work end to end.” Emphasis on purpose, technical excellence, and real‑world impact. harmattan.ai
- Values: Tackle the hardest problems, build what matters, move at the speed of relevance, and aim to redefine frontiers. harmattan.ai
- Work policy: Hybrid model with a mix of remote and on‑site; many roles are in‑office at locations in Paris, Lausanne, London, Arlington (TX), Wissous, Poland, UAE, and Morocco. builtin.com
- Engineering culture: Hands‑on development of mission‑critical autonomous systems; strong R&D focus across AI, computer vision, RF hardware, propulsion, and mission planning.
- Perks: Not explicitly listed, but the company highlights the opportunity to protect front‑line personnel and shape the future of autonomous defence.