Senior Mechanical Engineer – Quadcopter Systems

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. We are seeking a high-drive, hands-on Senior Mechanical Engineer to join our dedicated Quadcopter Airframe team in Lausanne. In this role, you will own the end-to-end mechanical architecture of our flagship multirotor platforms—from initial CAD concept and structural design to payload packaging, physical prototyping, and production release.

From day one, you will take full ownership of real hardware: designing complex assemblies in SolidWorks, solving heat and vibration challenges, running lab validation, and driving parts through production alongside our cross-functional engineering teams. What You Will Do Quadcopter & Subsystem Architecture: Lead the mechanical design and modeling of lightweight quadcopter structures, fuselages, chassis, motor mounts, and quick-release mechanisms in SolidWorks from concept to production.

Electromechanical Packaging: Lead spatial layouts and enclosure design to integrate electrical components (PCBs, wire harnesses, power distribution, motors, and sensors) tightly into custom airframe volumes. Rapid Prototyping & Physical Testing: Build functional prototypes and execute hands-on lab validation—including vibrational testing, modal analysis, thermal chamber runs, drop testing, and assisting with flight tests.

Simulation & Thermal Analysis: Perform structural (FEA), modal, and thermal simulations alongside tolerance stack-up analyses to ensure designs withstand extreme defense operational environments. DFM & Production Documentation: Partner with Industrialisation, Procurement, and suppliers to optimise parts for plastic injection molding, CNC machining, sheet metal, and additive manufacturing.

Assembly Enablement: Support Industrialisation engineers in defining assembly sequences, designing build jigs and fixtures, and training production operators to ensure high build quality and fast throughput. What We Are Looking For Background: M. Sc . or B. Sc . (FH / HES / Unive