Propulsion Engineer Intern - Fall 2026

Reposted 10 Days Ago
Be an Early Applicant
Los Angeles, CA, USA
In-Office
Internship
Aerospace • Hardware • Manufacturing
Hermeus is a aircraft manufacturer focused on rapid design, build, and test of high-Mach and hypersonic aircraft.
The Role
Assist in designing, developing, and testing propulsion components and systems. Collaborate with teams to produce hardware and document testing activities.
Summary Generated by Built In
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.

As a Propulsion Engineering Intern, you will support the design, development, and testing of propulsion components and systems. You will work closely with engineers, manufacturing teams, and vendors to help bring propulsion hardware from concept through testing.
 
Fall: Around 16 weeks (August - December)
 

Responsibilities:

  • Support the design and development of propulsion components and systems from conceptual design through detailed mechanical design
  • Create and release engineering drawings and collaborate with manufacturing teams and external vendors to produce hardware
  • Assist in defining, configuring, and setting up propulsion test rigs
  • Support the execution and documentation of propulsion hardware testing and development activities

Minimum 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, design, 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.

U.S. EXPORT CONTROL COMPLIANCE STATUS 
The person hired will have access to information and items subject to U.S. export controls, and therefore, must either be a “U.S. person” as defined by 22 C.F.R. § 120.62 or otherwise eligible for deemed export licensing. US persons include U.S. citizens, U.S. nationals, lawful permanent residents (green card holders), and asylees and refugees with such status granted, not pending. 
 
EQUAL OPPORTUNITY
Hermeus is an Equal Opportunity Employer. Employment decisions at Hermeus are based solely on merit, competence, and qualifications, without regard to race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.
 

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The Company
HQ: Atlanta, GA
270 Employees
Year Founded: 2018

What We Do

Hermeus is a high-speed aircraft manufacturer focused on the rapid design, build, and test of high-Mach and hypersonic aircraft for the national interest. Working directly with the Department of Defense, Hermeus delivers capabilities that will ensure that our nation, and our allies, maintain an asymmetric advantage over any and all potential adversaries. Utilizing an integrated, hardware-rich, iterative development approach to aircraft design and build, Hermeus aims to deliver advanced air power at a pace not seen in the U.S. since the 1950s. Hermeus’ current Quarterhorse Program is actively unlocking unmanned high-speed flight. One program, four aircraft – each purpose-built to unlock a specific technical challenge, advance learnings, and incrementally de-risk critical technology in the pursuit of hypersonic aircraft. Today, Hermeus is building its second Quarterhorse vehicle, Mk 2, after having designed, built, and flight tested its predecessor, Mk 1, in 18 months. Capable of reaching speeds of Mach 3+, Quarterhorse Mk 2 will be the fastest uncrewed military aircraft in service for national defense. The final iteration of Quarterhorse, Mk 4, will be capable of transitioning from turbofan to ramjet mode utilizing a Hermeus-developed turbine-based combined cycle (TBCC) propulsion system to achieve sustained speeds of Mach 5+. Hermeus' approach of build-fly-build lays the groundwork for unlocking hypersonic flight at a pace and cost previously deemed impossible. America needs fast planes fast – and Hermeus is delivering them.

Why Work With Us

We prioritize hardware and people. Cutting-edge technology is only made possible by bringing together a world-class team. At Hermeus, you will be challenged – but also empowered. We encourage calculated risks taking and learning from our mistakes. Iteration is the name of the game.

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