Mechanical Engineer

<div>Hermeus is a venture-backed defense aviation company reclaiming the lost art of rapid iterative prototyping to build the fastest aircraft in the world today. By prioritizing relentless hardware iteration, we deliver high-speed systems at the pace of the modern battlefield. We work with the Department of War to provide the high-speed capabilities our nation and its allies need to maintain a durable, asymmetric advantage.</div><div><br></div><h3><strong>About the Role:</strong></h3> <h3><strong>We are seeking a Mid-Career Mechanical Engineer to support the design, build, and test of next-generation aircraft aerostructures, including fuselage, empennage, control surfaces, and landing gear systems. This role is hands-on and execution-oriented, with responsibility for taking hardware from concept through detailed design, fabrication support, and test validation.</strong></h3> <div>&nbsp;</div> <div>&nbsp;</div><h3>Responsibilities:</h3> <li>Own R&amp;D-focused structural design and development supporting vehicle subsystems such as hydraulics, fuel systems, propulsion, and avionics, with an emphasis on rapid prototyping and iteration&nbsp;</li> <li>Perform first-principles structural and thermal analyses using hand calculations and FEA to inform early design decisions and experimental validation&nbsp;</li> <li>Execute trade studies across mechanical, fluid, and avionics subsystems focused on performance, mass efficiency, and technical risk reduction&nbsp;</li> <li>Design, build, and test prototype hardware, owning development from concept through fabrication, integration, and experimental validation&nbsp;</li> <li>Collaborate closely with manufacturing and test teams to transition prototype concepts toward scalable, production-aware designs&nbsp;</li> <li>Support hands-on integration, troubleshooting, and test campaigns to quickly iterate and mature hardware&nbsp;</li> <li>Present technical findings in internal design reviews and contribute to cross-functional and supplier/customer technical discussions&nbsp;</li> <h3>Requirements:</h3> <li>Bachelor’s degree in mechanical engineering, aerospace engineering, or physics&nbsp;</li> <li>2+ years of experience in mechanical design, analysis, and experimental testing (internships and significant student project experience qualify), preferably in an R&amp;D or prototype environment&nbsp;</li> <h3>Preferred Skills and Experience:</h3> <li>Strong hands-on experience with rapid prototyping, hardware build, and mechanical assembly of complex systems&nbsp;</li> <li>Solid foundation in engineering fundamentals including statics, dynamics, heat transfer, fluid mechanics, and vibration&nbsp;</li> <li>Proficiency in CAD (NX preferred), FEA (Ansys preferred), and PLM tools (Teamcenter preferred)&nbsp;</li> <li>Experience designing and testing hardware in early development environments, with awareness of design-for-manufacturing and production considerations&nbsp;</li> <li>Familiarity with mechanical testing under vibration, fatigue, shock, vacuum, and thermal loads&nbsp;</li> <li>Demonstrated ability to collaborate across disciplines (fluids, avionics, manufacturing) to deliver integrated experimental systems&nbsp;</li> <li>Proven ownership of technically complex projects from concept through test and iteration&nbsp;</li>