Firefly Aerospace
Mechanical Engineer III
Cedar Park, TX · Full-time · Posted Oct 22, 2026
- Experience
- 6+ years in a structural system design-related role.
- 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 U.S. Department of State authorizations for compliance with U.S. Government space technology export regulations, including ITAR.
About the job
Develops pressurized primary structures for launch vehicles across design, analysis, fabrication, testing, and production.
What you'll do
- Own hardware development from conceptual design and structural sizing through production and structural testing.
- Design and develop composite pressurized structures; optimize and requalify existing designs.
- Create CAD models, manufacturing drawings, specifications, and other documentation; support trade studies and maintain requirements, schedules, budgets, and status.
What they ask for
- B.S. degree in aerospace or mechanical engineering.
- 6+ years of experience in a structural system design-related role.
- Strong design and integration skills using 3-D CAD software.
- Experience with industry FEA/FEM tools such as Nastran, ANSYS, FEMAP, or Simcenter; ability to work on multidisciplinary teams and provide technical guidance.
Nice to have
- Experience taking hardware through analysis, testing, and analysis validation; familiarity with aerospace structural analysis methods.
- Working knowledge or demonstrated experience in composite manufacturing, material selection, testing, and characterization.
Tools
Siemens NX, FiberSim, Nastran, ANSYS, FEMAP, Simcenter
Model-written summary · the original posting is authoritative