Fluids Systems Engineer II: Launch Site Design & Test

Firefly Aerospace; Town of Texas (WI); Hybrid; USD 90,000 - 130,000; Full time

Benefits offered by this job

Health, dental and vision plans

Parental leave

Educational reimbursement

Short term disability

Flexible PTO

Job summary

Firefly Aerospace is seeking an FGSE Engineer to own the full lifecycle of critical fluid systems at launch sites, test stands, and production facilities. You will design, analyze, and build incompressible, cryogenic, and high-pressure gas systems, generating schematics, BOMs, and CAD drawings while coordinating with technicians and welders.

You’ll lead design reviews, support operational readiness, and travel to sites up to 30% of the time to deploy new systems for multiple programs.

Qualifications

• Bachelor’s degree in mechanical or aerospace engineering or equivalent.
• 2–5 years of professional experience with fluid systems in design, assembly, test, or operations.
• Strong understanding of fluid dynamics and thermodynamics.
• Experience with valves, regulators, instrumentation.
• Experience creating P&IDs and fluid system sizing.
• Capable of 30% travel for GSE build and activation.

Responsibilities

• Design, analyze, and build test stand and launch pad fluid systems, including incompressible, cryogenic, and high-pressure gas systems.
• Own the full design cycle of your fluid systems, including generating schematics and P&IDs, sizing components, generating BOMs, creating CAD, procuring hardware, and generating drawings.
• Work directly with technicians and welders to schedule, prepare, and build your designs and fix real-world problems.
• Participate in and lead internal design reviews, operational readiness reviews, and represent Firefly during external design reviews.
• Travel to test and launch sites, as required, to support build and commissioning of new and upgraded fluid system.

Skills

Fluid systems

P&IDs

CAD Siemens NX

Cryogenic systems

Propellant systems

Valves & instrumentation

Fluid dynamics

Thermodynamics

Travel readiness

Education

Bachelor’s degree in Mechanical or Aerospace Engineering

Advanced degree in Mechanical or Aerospace Engineering

Tools

Siemens NX

Job description

Firefly Aerospace is seeking an FGSE Engineer to own the full lifecycle of critical fluid systems at launch sites, test stands, and production facilities. You will design, analyze, and build incompressible, cryogenic, and high-pressure gas systems, generating schematics, BOMs, and CAD drawings while coordinating with technicians and welders.

You’ll lead design reviews, support operational readiness, and travel to sites up to 30% of the time to deploy new systems for multiple programs.