Propulsion Engineer I: End-to-End Hardware Lead

Firefly Aerospace, Inc.; Cedar Park (TX); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Unlimited PTO

Sabbatical every 5 years

Medical, dental, vision, life, and/dis

Mental health services

Paid military leave

Maternity/paternity leave

Stock bonuses

401(k) matching

Home purchase bonus

Job summary

Firefly Aerospace, Inc. is seeking a dedicated engineer to own the cradle‑to‑grave hardware development for propulsion components, valves, regulators and actuators. You will lead cross‑functional teams to deliver high‑quality hardware on time, from conception through qualification and production handoff.

The role emphasizes analytical modeling, rapid development techniques, and collaboration across engineering, manufacturing and test disciplines to meet ambitious performance and cost goals.

Qualifications

• BS in Mechanical or Aerospace Engineering (required).
• 1+ years of valve or fluid system design experience.
• Strong fundamentals in fluid mechanics, heat transfer, structures, materials and processes.
• Experience with valve design, regulators, instrumentation and high‑pressure systems.

Responsibilities

• Formulate cradle‑to‑grave hardware roadmap.
• Design and deliver propulsion components for high‑performance systems.
• Own development lifecycle from concept to production support.

Skills

Fluid mechanics

Structural analysis

GD&T

DFM

FEA/CFD

Analytical models

Project management

Cross-functional collaboration

Self-motivation

Engineering fundamentals

Education

BS in Mechanical or Aerospace Engineering

Tools

CAD software

CFD tools

FEA software

Job description

Firefly Aerospace, Inc. is seeking a dedicated engineer to own the cradle‑to‑grave hardware development for propulsion components, valves, regulators and actuators. You will lead cross‑functional teams to deliver high‑quality hardware on time, from conception through qualification and production handoff.

The role emphasizes analytical modeling, rapid development techniques, and collaboration across engineering, manufacturing and test disciplines to meet ambitious performance and cost goals.