Principal Propulsion Engineer (Propulsion Components)

Firefly Aerospace • Cedar Park, Texas • Posted June 10, 2026

About the Role

ABOUT FIREFLY AEROSPACE


As an end-to-end responsive space transportation company, Firefly Aerospace is on a mission to enable our world to launch, land, and operate in space – anywhere, anytime. Our launch vehicles, lunar landers, and orbital vehicles provide government and commercial customers with full mission services from low Earth orbit to the surface of the Moon and beyond. Headquartered in north Austin, Texas, Firefly is looking for passionate, hardworking innovators to join our team and help fuel our successful trajectory into space.

SUMMARY

At Firefly, we believe that building a reliable and inexpensive launch vehicle requires the most reliable, production efficient valves available. On the fluid components team, we design, build, test, and qualify high-performance, precision fluid components tailored to the specific needs of our Alpha launch vehicle, Eclipse launch vehicle, Blue Ghost lunar landers, and Elytra spacecraft. Our team of r...