Firefly Aerospace
Propulsion Engineer II - Engine Design
Briggs, TX · Full-time · Posted Oct 23, 2026
- Experience
- 1–3 years in mechanical hardware design required; desired: 5+ years creating flight hardware CAD and drawings, or an advanced degree is also listed as a desired qualification.
- Education
- B.S. in Mechanical, Aerospace, or a related engineering discipline, or equivalent design and drafting experience; an advanced degree is desired.
- 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
Owns CAD and engineering drawings for Alpha rocket engine assemblies, managing design data and supporting manufacturability, inspection, and design improvements.
What you'll do
- Manage CAD models, large assemblies, configuration, revisions, and release workflows for engine hardware.
- Create and review manufacturing drawings using GD&T; analyze tolerance stackups and assembly fit.
- Set CAD standards and collaborate with manufacturing, quality, and suppliers to support design reviews and resolve non-conformances.
What they ask for
- B.S. in Mechanical, Aerospace, or a related engineering discipline, or equivalent design and drafting experience.
- 1–3 years of experience in mechanical design of hardware.
- Expert proficiency with 3D CAD and large, complex assemblies; strong command of GD&T, tolerancing, and ASME Y14.5.
- Experience with PLM and configuration management, tolerance stackups, and fit, clearance, and interference analysis.
Nice to have
- Siemens NX and Teamcenter experience.
- Advanced degree; experience with launch vehicle, spacecraft, or liquid rocket engine flight hardware; or familiarity with Python, NX Open, or other scripting.
Tools
3D CAD, Siemens NX, GD&T, ASME Y14.5, PLM, Teamcenter, Python, NX Open
Model-written summary · the original posting is authoritative