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Hermeus

Develops hypersonic defense aircraft and engines

Subsystem Test Engineer Intern

Spacecraft & Launch Vehicle SystemsConfirmed live in the last 24 hours
Internship · Spring 2027, Summer 2027$25 - $33 /hrIn-person

About the Job

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 as an undergraduate student in the third or fourth year of study, or enrolled in a Master's or Ph.D. program.
  • Strong interest in testing.
  • Strong understanding of engineering first principles.
  • Demonstrated ability to work within cross-functional teams.
  • Excellent written and verbal communication skills.
  • GPA of 3.0 or above.

Responsibilities

  • Support the design, development, manufacturing, implementation, and maintenance of test assets, including test facilities, fixtures, rigs, and supporting hardware.
  • Design test fixtures, tooling, adapters, interfaces, panels, and other hardware used in test setups.
  • Assist in developing test plans, procedures, and protocols for vehicle subsystems and components.
  • Perform engineering analysis to help determine target test points, instrumentation requirements, and appropriate test safety margins.
  • Support test design reviews and collaborate with cross-functional engineering, manufacturing, and technician teams to ensure alignment on test requirements and execution.
  • Create CAD models, drawings, and manufacturing plans for test components, fixtures, and flight-like hardware as needed.
  • Work directly with manufacturing and build teams to track hardware progress, troubleshoot issues, and support test readiness.
  • Assist with the operation and troubleshooting of fluid, mechanical, and electrical test systems, including pumps, motors, heat exchangers, valves, regulators, accumulators, tubing, fittings, and high-voltage components.
  • Support test execution, data collection, and troubleshooting of test hardware and systems.
  • Maintain detailed documentation of test configurations, procedures, results, findings, and hardware changes.
  • Identify opportunities to improve testing processes, hardware, and infrastructure and contribute to the development of new testing methods and capabilities.

About the Company

Hermeus

Develops hypersonic defense aircraft and engines

Hermeus designs and builds high-Mach and hypersonic aircraft for defense, using uncrewed test platforms and a reusable propulsion system. Its core approach centers on the Quarterhorse testbed and the Chimera engine, a turbine-based combined cycle that starts in a turbojet mode for runway takeoff and transitions to a ramjet for speeds above Mach 5. The company differentiates itself with rapid, hardware-focused prototyping drawn from a spaceflight background and a clear path to production through government contracts with the DoD, DIU, and ABMS programs. Its near-term goal is to mature Quarterhorse and Darkhorse into production-capable systems for defense missions, while its long-term vision includes Halcyon, a 20-seat commercial airliner flying transatlantic routes in about 90 minutes.

Company size
201-500
Company stage
Series C
Total funding
$566M
Headquarters
Atlanta, GA
Founded
2018

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