ABOUT FIREFLY AEROSPACE
Firefly Aerospace is a space and defense technology company on a mission to reliably and repeatedly launch, land, and operate space systems from Earth to the Moon and beyond. As the partner of choice for critical space missions, Firefly is the first commercial company to launch a satellite to orbit with 24-hour notice and the first company to achieve a successful Moon landing. 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
As a Fluids Ground Support Equipment (FGSE) Engineer at Firefly, you'll own the complete lifecycle of critical fluid systems at our launch sites, test stands, and production facilities. You'll work in a dynamic and collaborative environment designing and building large complex fluid systems, including incompressible, cryogenics, propellants, and high-pressure gas systems. You’ll be solving real-world problems in real-time alongside skilled technicians, welders, and cross-functional teams. From architecture trades and detailed designs through fabrication, installation, and activation, you'll be the technical decision-maker ensuring Firefly's launch sites and test stands meet the current and future needs for each of Firefly’s programs.
This role offers exposure across Firefly's entire fleet - Alpha, Eclipse, Elytra, and Blue Ghost - giving you an unparalleled breadth of experiences and challenges as you help define the next generation of test and launch infrastructure.
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
QUALIFICATIONS
Required
- Bachelor’s degree in mechanical engineering, aerospace engineering, or equivalent
- 2-5 years of recent experience in a professional setting outside the classroom with fluid systems, pneumatics, hydraulics, or HVAC systems in a design, assembly, test, or operations capacity
- Thorough understanding of fluid dynamics and thermodynamics
- Solid understanding of fluid components such as valves, regulators, pressure transducers, tubing, tanks, pressurized hardware, seals, and instrumentation
- Experience with fluid system subcomponent or pressurized component development, design, or testing (such as valves, regulators, piping systems, pumps, etc..)
- Working knowledge of manufacturing, fabrication, integration & quality control relevant to fluid components (such as machining, inspection, welding, assembly, testing, etc.)
- Demonstrated ability to do clean sheet designs of pressurization systems, propellant systems, or other complex multidisciplinary systems
- Experience creating P&IDs, performing fluid system sizing, fluid component and instrumentation selection, and pressurized system design
- Experience using fluids analysis tools such as REFPROP, GFSSP or other computer-based fluid dynamic modeling
- Proficient with 3D & 2D CAD software packages such as Siemens NX
- Capable of balancing detailed design tasks with higher level project management style tasks, including budgeting, scheduling, and communications
- Able to travel in support of GSE build and activation up to 30% of the time
Desired
- Advanced degree in mechanical, aerospace, or equivalent field
- Direct hands-on experience building, troubleshooting, and/or operating complex fluid or mechanical systems
- Cryogenic system design and/or operational experience
- Hypergolic system design and/or operational experience
- Experience working in an aerospace, R&D, or oil & gas environment.
- Familiarity with ASME, NASA, and AFSPCMAN standards related to fluid system design, such as ASME B31.3, ASME BPVC Section VIII, and/or AFSPCMAN 91-710
- Direct experience with design and build of ground systems (GSE) or related fluid systems including, but not limited to test environments, fluid or gas conditioning/storage, manufacturing processes, and compressible gases
Firefly offers outstanding benefits for our employees, including generous health, dental and vision plans with low plan deductibles, parental leave, educational reimbursement, short term disability, and flexible PTO options.
To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State.
Firefly Aerospace, Inc. is an Equal Opportunity Employer; employment with Firefly is governed based on merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.
Skills Required
- Bachelor's degree in mechanical engineering, aerospace engineering, or equivalent
- 2-5 years of professional experience with fluid systems, pneumatics, hydraulics, or HVAC systems
- Thorough understanding of fluid dynamics and thermodynamics
- Understanding of valves, regulators, pressure transducers, tubing, tanks, pressurized hardware, seals, and instrumentation
- Experience developing, designing, or testing fluid system subcomponents or pressurized components
- Working knowledge of manufacturing, fabrication, integration, and quality control for fluid components
- Ability to perform clean-sheet designs of pressurization systems, propellant systems, or complex multidisciplinary systems
- Experience creating P&IDs, sizing fluid systems, selecting components and instrumentation, and designing pressurized systems
- Experience using fluid analysis tools such as REFPROP, GFSSP, or equivalent
- Proficiency with 3D and 2D CAD software such as Siemens NX
- Ability to balance detailed design with project management tasks including budgeting, scheduling, and communications
- Ability to travel up to 30% for GSE build and activation
- Advanced degree in mechanical engineering, aerospace engineering, or equivalent
- Hands-on experience building, troubleshooting, or operating complex fluid or mechanical systems
- Cryogenic system design or operational experience
- Hypergolic system design or operational experience
- Experience in aerospace, R&D, or oil and gas environments
- Familiarity with ASME, NASA, and AFSPCMAN standards related to fluid system design
- Experience designing and building ground support equipment or related fluid systems
What We Do
Firefly Aerospace Inc. (”Firefly”) is developing a family of launch and in-space vehicles and services that provide industry-leading affordability, convenience, and reliability. Firefly’s launch vehicles utilize common technologies, manufacturing infrastructure, and launch capabilities, providing LEO launch solutions for up to ten metric tons of payload at the lowest cost per kg in the small-launch class. Combined with Firefly’s in-space vehicles, such as the Space Utility Vehicle and Blue Ghost lunar lander, Firefly will provide the space industry with a single source for missions from LEO to the surface of the Moon or beyond.







