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.
We are looking for a Senior Methods Engineer to join our production plant in Wissous. In our context of fast growth, you will act as the connector between Production, Quality, Supply Chain, and our Industrialisation & Automation team.
We are not asking for you to maintain what someone else built, we are asking for you to build it yourself: every process, standard, lean system.
An ideal day in this position starts on the shopfloor: quick walk, performance standup, catching issues early.
Mid-day splits between desk work (time studies, routing updates, ERP automation) and cross-functional sessions with Production, Quality, and the Automation team.
Afternoons are hands-on: kaizen walks, work instruction updates, problem-solving with supervisors.
You close the day feeding data back into the system.
Roughly 50% floor, 50% structured engineering work, every day. In a nutshell:
We look forward to hearing how you can help shape the future of autonomous defense systems at Harmattan AI.

Harmattan AI is rising as a next-generation defense prime, building the future of autonomous warfare.
We leverage AI-driven autonomy, real-time intelligence, and conflict-ready production to deliver attritable systems and autonomous mission management software.
Designed for the real-world needs of warfighters, our solutions enable faster deployment, sharper decision-making, and battlefield dominance.