Firefly Aerospace
Mechanisms Engineer III (Spacecraft)
Cedar Park, TX · Full-time · Posted Oct 20, 2026
- Experience
- 8+ years; desired qualification includes an M.S. degree and/or 10+ years of relevant experience.
- Education
- B.S. degree in aerospace or mechanical engineering.
- 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.
About the job
Develops and supports mechanical separation, interface, and moving assembly systems for spacecraft missions throughout their lifecycle, from design and analysis through production and qualification testing.
What you'll do
- Own the lifecycle of mission hardware for moving mechanical assemblies and structures, including requirements, design, production, and testing.
- Perform conceptual design, trade studies, and first-order strength and sizing calculations; generate CAD, manufacturing drawings, specifications, and documentation.
- Define qualification testing and demonstrate compliance with applicable launch jurisdiction standards.
What they ask for
- B.S. degree in aerospace or mechanical engineering and 8+ years of demonstrated professional experience in aerospace or a related mechanical engineering field.
- Strong 3-D CAD design and integration skills; Siemens NX is preferred.
- Experience with industry FEA/FEM tools such as Nastran, ANSYS, or FEMAP.
- Experience designing and analyzing composite and metallic structures.
Nice to have
- M.S. degree in aerospace or mechanical engineering and/or 10+ years of relevant experience.
- Working knowledge of composite manufacturing, material selection, and testing; physical test development; aerospace structural analysis methods; spacecraft or launch vehicle mechanisms; or a computer/scripting language.
Tools
Siemens NX, Nastran, ANSYS, FEMAP
Model-written summary · the original posting is authoritative