Lead Fluids Systems Engineer, Space Launch & Test Stands

Firefly Aerospace; Town of Texas (WI); Hybrid; USD 120,000 - 150,000; Full time

Benefits offered by this job

Health plan

Dental plan

Vision plan

Parental leave

Education reimbursement

Short-term disability

Flexible PTO

Job summary

Firefly Aerospace is seeking an experienced FGSE Engineer to own the complete lifecycle of critical fluid systems at launch sites, test stands, and production facilities. You will design, analyze, and build complex fluid systems including cryogenics and high-pressure gas, coordinating with technicians and cross-functional teams.

You will lead design reviews, mentor junior engineers, and travel to sites up to 30% to support builds and activations across the Alpha, Eclipse, Elytra, and Blue Ghost

Qualifications

• Bachelor’s degree in mechanical, aerospace or equivalent.
• 5–10 years of experience with fluid systems in design, test or operations.
• Thorough understanding of fluid dynamics and thermodynamics.
• Experience with valves, regulators, transducers, tubing, tanks and pressurized hardware.
• Experience with design and testing of pressurized components and systems (valves, piping, pumps).
• Proficiency with manufacturing, fabrication, and quality control for fluid components.

Responsibilities

• Design, analyze, and build test stand and launch pad fluid systems (incompressible, cryogenic, high-pressure gas).
• Own full design cycle: schematics, P&IDs, BOMs, CAD drawings, procurement, drawings.
• Collaborate with technicians to build and troubleshoot designs.
• Lead internal and external design reviews and readiness reviews.
• Mentor early-career engineers and develop tools/processes.
• Travel to test/launch sites up to 30% for build and activation.

Skills

Fluid design

Pneumatics

Hydraulics

HVAC systems

P&IDs

Siemens NX

CAD drafting

Project management

Travel 30%

Cryogenics

Education

Bachelor's degree (Mechanical/Aerospace)

Advanced degree

Tools

REFPROP/GFSSP

Fluid modeling tools

Job description

Firefly Aerospace is seeking an experienced FGSE Engineer to own the complete lifecycle of critical fluid systems at launch sites, test stands, and production facilities. You will design, analyze, and build complex fluid systems including cryogenics and high-pressure gas, coordinating with technicians and cross-functional teams.

You will lead design reviews, mentor junior engineers, and travel to sites up to 30% to support builds and activations across the Alpha, Eclipse, Elytra, and Blue Ghost