Firefly Aerospace
Fluids Engineer II
Briggs, TX · Full-time · Posted Oct 22, 2026
- Experience
- 2–5 years of recent professional experience outside the classroom.
- Education
- Bachelor’s degree in mechanical engineering, aerospace engineering, or equivalent.
- Visa sponsorship
- Must be a U.S. citizen, lawful permanent resident, 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
Designs and delivers fluid ground support systems for Firefly’s test stands, launch sites, and production facilities, from initial design through build and activation.
What you'll do
- Design, analyze, and build fluid systems, including cryogenic and high-pressure gas systems.
- Manage system design deliverables, such as P&IDs, component sizing, bills of materials, CAD, procurement, and drawings.
- Coordinate with technicians and welders, participate in design and readiness reviews, and support site build and commissioning.
What they ask for
- Bachelor’s degree in mechanical engineering, aerospace engineering, or equivalent.
- 2–5 years of recent professional experience with fluid systems, pneumatics, hydraulics, or HVAC in design, assembly, test, or operations.
- Experience with fluid system design, including P&IDs, sizing, component selection, pressurized systems, and fluid analysis tools.
- Proficient with 3D and 2D CAD software; able to travel up to 30% of the time.
Nice to have
- Advanced degree in mechanical, aerospace, or equivalent field; hands-on experience building or operating complex systems.
- Cryogenic or hypergolic system experience; aerospace, R&D, or oil & gas experience; familiarity with relevant ASME, NASA, or AFSPCMAN standards.
Tools
REFPROP, GFSSP, Siemens NX, ASME B31.3, ASME BPVC Section VIII, AFSPCMAN 91-710
Model-written summary · the original posting is authoritative