Propulsion Test Engineering Intern - Fall 2026

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. About The Role:  As a Propulsion Test Engineering Intern, you will gain hands-on experience working with high-performance propulsion systems, supporting engine and system-level testing. You will work closely with engineers and technicians to set up test campaigns, monitor data, and troubleshoot issues, directly contributing to Hermeus’ hypersonic development efforts.   Fall: Around 16 weeks (August - December) Responsibilities: • Work alongside experienced engineers to assist in designing, setting up, and operating test stands, learning the fundamentals of propulsion system testing. • Help instrument test setups, monitor test conditions, and analyze performance data to contribute to system improvements and troubleshooting efforts. • Partner with engineers and technicians to refine test processes, enhance safety procedures, and develop a deeper understanding of propulsion systems in a real-world testing environment. Requirements: • Practical experience designing, building, and testing vehicles through internships, studies or projects. • Must be currently enrolled in a STEM program at an accredited college or university (undergraduate student in your third or fourth year of study, or enrolled in a Master's or Ph.D. program). • Strong interest in propulsion systems and testing. • Strong understanding of engineering first principles. • Demonstrated ability to work within cross-functional teams. • Enthusiasm for aviation and Hermeus's mission. • Excellent written and verbal communication skills. • GPA of 3.0 or above.