Propulsion Test Technician
Hermeus
Jacksonville, FL, USA
Posted on Jun 25, 2025
Hermeus is an aerospace and defense technology company founded to radically accelerate air travel by delivering hypersonic aircraft. The company aims to develop hypersonic aircraft quickly and cost-effectively by integrating hardware-rich, iterative development with modern computing and autonomy. This approach has been validated through design, build, and test of the company’s first combined turbojet-ramjet engine and is now being scaled through its first flight vehicle program, Quarterhorse. Hermeus is also developing Darkhorse — an uncrewed hypersonic aircraft designed to deliver unique asymmetric capabilities to the warfighter.
Hermeus is seeking a skilled Propulsion Test Technician to join our growing team at our newest facility in Jacksonville, Florida. As a Propulsion Test Technician, you will be responsible for the development, maintenance, and operation of propulsion system test hardware to ensure the reliability and performance of Hermeusaircraft engines. This position will collaborate in a cross functional working environment and contribute to the development of cutting-edge aerospace technologies.
Responsibilities:
- Responsible for the development, maintenance, and operations of propulsion test hardware (including facilities and ground test equipment).
- Perform a variety of test operations, including safely configuring high-pressure hazardous fluid systems, meticulously connecting instrumentation, and ensuring restricted area access control. Furthermore, troubleshoot instrumentation and test hardware malfunctions while attentively monitoring test video and data for anomalies.
- Build, test, modify, and troubleshoot new and existing test equipment which ranges from fluid systems, mechanical assemblies, data and control systems, and instrumentation.
- Perform other related duties, as assigned, for the purpose of ensuring an efficient and effective work environment
Minimum Qualifications:
- High school diploma, or equivalent certificate
- 4+ years of experience in military jet engine maintenance, including depot- or intermediate-level work
- 2+ years of hands-on experience in aerospace or aviation environments (e.g., propulsion or flight development programs)
- Proficient in fabricating and assembling pneumatic/fluid systems, including stainless-steel tubing and fluid connections (AN/JIC, Swagelok)
- Experience with machining, welding, hardware integration, and working with electrical systems
- Familiarity with jet engine test cells and interpreting technical documents
- Proficient with Microsoft Office and general computer use
- Willing to travel, work overtime/weekends, and able to obtain and maintain a security clearance
- Strong communication skills and technical documentation review abilities
Preferred Skills and Experience:
- Experience in a startup development environment
- Experience working in a fast-paced, scrappy, and cost-effective environment
- A&P license
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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.