Spacecraft Propulsion Fluids Engineer I

Firefly Aerospace, Inc.; Cedar Park (TX); On-site; USD 120,000 - 170,000; Full time

Benefits offered by this job

Unlimited PTO

Sabbatical

Health, dental, vision, life, and long

Mental health services

Paid military leave

Maternity leave

Paternity leave

Family planning assistance

Dog-friendly workplace

Trade school assistance

Leadership coaching

Stock bonuses

401(k) matching

Home purchase assistance

Job summary

Firefly Aerospace, Inc. seeks a Propulsion Fluid Systems Engineer to own the design, analysis, and lifecycle of fluid subsystems for Blue Ghost and Elytra spacecraft.

You will lead CAD/analysis, collaborate with fabrication teams, and support testing and launch operations in a fast-paced environment. The role requires a strong foundation in mechanical/aerospace engineering, 1+ year experience in fluid systems, and hands-on hardware experience with the ability to communicate technical concepts

Qualifications

• B.S. in Mechanical or Aerospace Engineering or related field.
• Advanced degree in Mechanical/Aerospace Engineering is a plus.
• 1+ years in fluid systems engineering and/or propulsion.
• Strong understanding of fluid dynamics and thermodynamics.
• Hands-on hardware design, fabrication, and testing experience.
• Experience with tubing design and layout.
• Experience with data acquisition and test instrumentation.
• Ability to work across cross-functional teams and communicate clearly.

Responsibilities

• Own spacecraft fluid system requirements, design, and analysis from concept through flight.
• Lead development of propulsion integration concepts to improve reliability.
• Serve as primary technical contact for spacecraft fluid systems.
• Prepare design reviews and present to internal/ external stakeholders.
• Plan and execute development, qualification, and acceptance testing of flight hardware.
• Drive manufacturability improvements to reduce part count and lead time.
• Identify risks, perform trade studies, and drive design decisions.
• Develop automation tools and enhance test data analysis capabilities.
• Support vehicle test and flight campaigns with operations support.
• Collaborate with manufacturing for processes, work instructions, and test procedures.

Skills

Problem solving

Communication

Technical writing

Hardware design

Fabrication

Quality control

Fluid dynamics

Thermodynamics

Tube design

Modeling tools

CAD

FEA

CFD

MATLAB

Python

First principles

Education

B.S. in Mechanical or Aerospace Engineering

Advanced degree (ME/AE)

Tools

CAD

FEA

CFD

MATLAB

Python

Job description

Firefly Aerospace, Inc. seeks a Propulsion Fluid Systems Engineer to own the design, analysis, and lifecycle of fluid subsystems for Blue Ghost and Elytra spacecraft.

You will lead CAD/analysis, collaborate with fabrication teams, and support testing and launch operations in a fast-paced environment. The role requires a strong foundation in mechanical/aerospace engineering, 1+ year experience in fluid systems, and hands-on hardware experience with the ability to communicate technical concepts