About the role#
As a Propulsion Engineer Test Intern, you will gain hands-on experience with high-performance propulsion systems. You will work directly with our team in Jacksonville to support engine and system-level testing. This role involves learning the fundamentals of propulsion system testing through active participation in our development efforts.
What you'll do#
- Work alongside experienced engineers to design, set up, and operate test stands.
- Instrument test setups and monitor conditions during active tests.
- Analyze performance data to help with system improvements and troubleshooting.
- Partner with engineers and technicians to refine test processes and improve safety procedures.
What you'll need#
- Current enrollment in a STEM program at an accredited college or university, specifically as a third or fourth-year undergraduate, or a Master's or Ph.D. student.
- Practical experience designing, building, and testing vehicles from projects, studies, or previous internships.
- A strong understanding of engineering first principles.
- Ability to work effectively within cross-functional teams.
- A strong interest in propulsion systems and testing.
- A GPA of 3.0 or above.
- Excellent written and verbal communication skills.
- Enthusiasm for aviation and the Hermeus mission.
Location & details#
- Location: Jacksonville, Florida
- Term: Fall 2026 (approximately 16 weeks, September through December)
- Commitment: Full-time, on-site
- Compensation: Paid internship
- Note: This position requires access to information subject to U.S. export controls. You must be a U.S. person as defined by 22 C.F.R. 120.62 or otherwise eligible for deemed export licensing.
About Hermeus
Hermeus designs and builds high-Mach and hypersonic aircraft. The company works with the Department of Defense to develop aviation technology. Founded in 2018, it operates out of Los Angeles with additional locations in Georgia and Florida. The firm employs 374 people and focuses on iterative hardware development.
How to get in at Hermeus
Applying early to Hermeus provides a distinct advantage, as hiring managers often review initial submissions before a large queue forms. Intern Insider sends an instant alert the moment a role matching your target is published, helping you secure a spot at the front of the line. This approach ensures you remain visible during the initial review phase. You can also improve your response rates by reaching out to the recruiters behind these roles directly to ask about the position or a potential referral. Intern Insider surfaces these specific contacts, allowing you to bypass the standard application portal and connect with the team members who manage the hiring process.


