Firefly Aerospace
Propulsion Engineer II (Spacecraft Engine Team)
Cedar Park, TX · Full-time · Posted Oct 22, 2026
- Experience
- 3+ years required; desired qualifications include 5+ years of progressive experience in a related engineering discipline.
- Education
- BS in Aerospace Engineering or related engineering discipline.
- Visa sponsorship
- Must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain required authorizations from the U.S. Department of State, to comply with U.S. Government space technology export regulations including ITAR.
About the job
Develops, tests, and supports spacecraft propulsion hardware and fluid systems for Firefly’s Blue Ghost program, from design through flight operations.
What you'll do
- Serve as responsible engineer and primary operator for spacecraft propulsion hardware and fluid systems.
- Develop designs and manufacturing, integration, and test processes; own development, qualification, and acceptance testing.
- Identify system risks, conduct trade studies, and develop automation and test-data analysis tools.
What they ask for
- BS in Aerospace Engineering or a related engineering discipline.
- 3+ years of experience working on an aerospace engine or fluid system.
- Strong fundamentals in fluids, thermodynamics, and mechanics; experience with Siemens NX or equivalent CAD program.
- Knowledge of design fundamentals including tolerancing, ASME Standards, ASTM, and GD&T; ability to work in a multidisciplinary team and provide technical guidance.
Nice to have
- Master’s Degree in Mechanical, Aerospace, or related engineering discipline; 5+ years of progressive experience in a related engineering discipline.
- Experience with storable liquid propulsion (NTO/MMH, Hydrazine), technical reviews or investigations, hands-on test integration, data acquisition and instrumentation, or end-to-end technical project ownership.
Tools
Siemens NX, ASME Standards, ASTM, GD&T, NTO/MMH, Hydrazine
Model-written summary · the original posting is authoritative