MechanicalDesignIntern

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 We have well-scoped mechanical support for radio testing campaign — Casing, CNC factoring, validation tooling, documentation — more work than current bandwidth allows in our team. As a Mechanical Engineering Intern, you will contribute to the mechanical design and optimization of a new military device, focusing on ruggedness, miniaturization, radio frequency isolation and thermal management. Our team needs someone who is able to add immediate engineering capacity to a high-priority project: developing the first-generation casing of a military radio for rapid integration into future autonomous defense systems. While the workload is highly structured and well-bounded for mentorship, the ability to take full ownership of a physical deliverable is key. The duration of this internship is 6 months.     RESPONSIBILITIES - CAD Modeling: Develop precise CAD models for the external casing and internal component mounting to ensure optimal spatial integration (Shielding and thermal). - Simulation & Validation: Conduct structural and thermal Finite Element Analysis (FEA) to validate designs against operational stress and heat loads. - Environmental Sealing: Design and test robust sealing solutions to achieve the required IP ratings for dust and water protection. - Material Selection: Source and evaluate high-performance materials suitable for deployment in military and rugged environments. - Prototyping &