Life at Firefly
At Firefly, we’re focused on making space attainable for everyone – including you! Each team member’s passion, dedication, and innovative ideas have a direct impact on fueling our successful trajectory into space. And there’s no shortage of meaningful projects to work on at Firefly. With launch, lunar, and orbital vehicles, Firefly has a diverse line of business with opportunities to get hands-on experience launching rockets, operating in space, and landing on the Moon.
What does SciTec bring to the Firefly family?
SciTec President David Simenc explains how its advanced defense technologies help protect our nation in this episode of Firefly FAQ.
Check it out!
What does SciTec bring to the Firefly family?
SciTec President David Simenc explains how its advanced defense technologies help protect our nation in this episode of Firefly FAQ.
Check it out!
Peep our Elytra orbiter being assembled in the cleanroom 👀.
This spacecraft is part of our Riders 2 the Dark mission — America`s first mission to land on the Moon`s far side.
Without direct line-of-sight to Earth, communication on the far side is impossible without a relay. That`s where our Elytra orbiter comes in 🛰️. Elytra will serve as a transfer vehicle and communications bridge between Blue Ghost and Earth, enabling critical science operations on the lunar surface and setting the stage for future missions.
Peep our Elytra orbiter being assembled in the cleanroom 👀.
This spacecraft is part of our Riders 2 the Dark mission — America`s first mission to land on the Moon`s far side.
Without direct line-of-sight to Earth, communication on the far side is impossible without a relay. That`s where our Elytra orbiter comes in 🛰️. Elytra will serve as a transfer vehicle and communications bridge between Blue Ghost and Earth, enabling critical science operations on the lunar surface and setting the stage for future missions.
Start your week with another Manufacturing Minute! Our Quality Metrologist, Chase Auker, takes us behind the scenes to show how laser trackers measure rocket and spacecraft components with incredible accuracy.
Start your week with another Manufacturing Minute! Our Quality Metrologist, Chase Auker, takes us behind the scenes to show how laser trackers measure rocket and spacecraft components with incredible accuracy.
This World Space Week, remember to look up and imagine what`s possible. Because every great leap forward starts with a bold idea💡.
Dream bigger. Go farther.
#WorldSpaceWeek
This World Space Week, remember to look up and imagine what`s possible. Because every great leap forward starts with a bold idea💡.
Dream bigger. Go farther.
#WorldSpaceWeek
Happy National Manufacturing Day! 🛠️
Today, we’re celebrating the people who make it all happen.
From building spacecraft components and rocket engines to assembling and testing launch vehicles, our manufacturing teams bring incredible skill, care, and pride to their work every day.
Swipe ➡️ to see our incredible manufacturing team taking us beyond Earth.
Happy National Manufacturing Day! 🛠️
Today, we’re celebrating the people who make it all happen.
From building spacecraft components and rocket engines to assembling and testing launch vehicles, our manufacturing teams bring incredible skill, care, and pride to their work every day.
Swipe ➡️ to see our incredible manufacturing team taking us beyond Earth.
Say hello to RTx 👋🏼
RTx is a ground-penetrating radar transmitter on the @mbrspacecentre`s Rashid Rover 2.
Flying aboard our Riders 2 the Dark mission, RTx will transmit signals that can probe up to 100 meters below the Moon’s surface. These signals will be received by NASA`s LuSEE-Night instrument on our Blue Ghost lander, helping scientists better understand the history and presence of minerals on the Moon.
RTx is a collaboration between Brookhaven National Laboratory, Heliospace Corp. and Southwest Research Institute.
Say hello to RTx 👋🏼
RTx is a ground-penetrating radar transmitter on the @mbrspacecentre`s Rashid Rover 2.
Flying aboard our Riders 2 the Dark mission, RTx will transmit signals that can probe up to 100 meters below the Moon’s surface. These signals will be received by NASA`s LuSEE-Night instrument on our Blue Ghost lander, helping scientists better understand the history and presence of minerals on the Moon.
RTx is a collaboration between Brookhaven National Laboratory, Heliospace Corp. and Southwest Research Institute.
The engine powering Alpha`s first stage is truly out of this world. Swipe to learn what makes Reaver special ➡️
The engine powering Alpha`s first stage is truly out of this world. Swipe to learn what makes Reaver special ➡️
More cleanroom space. More spacecraft in production. More missions. Endless possibilities. 🌙 ✨
Our Values
Headquartered in the Lone Star State, Firefly’s hardworking team reflects Texas’ GO BIG culture in everything we do. We build big, achieve big, and dream big. We’re building launch vehicles and spacecraft to provide rapid, reliable space access. We’ve achieved some incredible wins, including the first successful commercial Moon landing. And we’re dreaming bigger than this planet with ambitions to Mars, Venus, and beyond. Our core values are what drive us along the way.
Our Benefits
We take care of our Fireflies with some of the best benefits in the industry. Our mission to make space for everyone starts with our employees and allowing them to make space for their family, their career, and their future.
Job Openings
From launch technicians to propulsion engineers, Firefly has open roles across the company. We’re looking for passionate, bright innovators to join our team and help make space an achievable dream for everyone.
Propulsion Engineer I (Spacecraft Fluids)
ABOUT FIREFLY AEROSPACE
Firefly Aerospace is a space and defense technology company that enables our world to launch, land, and operate in space – anywhere, anytime. As the partner of choice for critical space missions, Firefly is the only commercial company to launch a satellite to orbit with 24-hour notice and the only company to achieve a successful Moon landing. Our launch vehicles, lunar landers, and orbital vehicles provide government and commercial customers with full mission services from low Earth orbit to the Moon and beyond. Headquartered in north Austin, Texas, Firefly is looking for passionate, hardworking innovators to join our team and help fuel our successful trajectory into space.
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.
ABOUT THE ROLE
The Propulsion Fluid Systems team is responsible for the design, integration, and operation of all fluid subsystems across Firefly’s spacecraft. As a Responsible Engineer, you will work across the full lifecycle of hardware, including requirements definition, design, analysis, development, test, and qualification of the Blue Ghost and Elytra spacecraft fluid systems. You will lead CAD design and analysis efforts, collaborate with fabrication and integration teams to build and assemble the system, and support vehicle testing and launch operations.
Fluid Systems Engineers have deep technical knowledge, ownership of hardware from concept to flight, and clear communication with cross-functional partners including structures, propulsion, avionics, and vehicle systems. The successful candidate will be a self-starter who enjoys challenging assumptions, thrives in a fast-paced development environment, and seeks to make impactful contributions to Firefly’s mission.
RESPONSIBILITIES
- Demonstrate full ownership of spacecraft fluid system requirements, design, and analysis from concept through flight.
- Lead development of innovative design concepts for propulsion integration and operations that reduce complexity and maximize reliability within program constraints.
- Serve as the primary technical point of contact for all spacecraft fluid systems.
- Author and present detailed design review presentations to internal and external stakeholders
- Plan, coordinate, and execute development, qualification, and acceptance testing of flight hardware, including data analysis and reviews.
- Implement design-for-manufacturability improvements to increase production efficiency and vehicle reliability.
- Identify system-level risks, perform trade studies, and drive decisions to ensure successful vehicle operation.
- Develop and maintain automation tools and test data analysis capabilities.
- Support vehicle test and flight campaigns by providing console operations support.
- Collaborate with manufacturing and integration teams to develop processes, work instructions, and test procedures, and provide direct build support
- Drive development of efficient test and flight operations for fluid systems and assist with troubleshooting during vehicle operations
QUALIFICATIONS
Required
- B.S. in Mechanical, Aerospace, or related engineering discipline
- 1+ years of experience in fluid systems engineering and/or propulsion
- Thorough understanding of fluid dynamics and thermodynamics
- Experience with tube or pipe design and layout
- Proficiency in modeling and analysis tools (e.g., CAD, FEA, CFD, MATLAB, Python)
- Deep knowledge of engineering fundamentals and a demonstrated history of applying first principles to arrive at simple, robust solutions
- Excellent problem-solving, communication, and technical writing skills.
- Hands-on experience with hardware design, fabrication, and testing
- Working knowledge of manufacturing, fabrication, integration, and quality control relevant to fluid components (such as machining, inspection, assembly, testing, etc.)
- Knowledge of fluid components such as valves, regulators, pressure transducers, tubing, pressurized hardware, seals, and instrumentation and experience performing fluid systems sizing analysis with such components
- Ability to rapidly develop solutions with partially defined or evolving requirements
Desired Qualifications
- Advanced degree in Mechanical Engineering, Aerospace Engineering, or equivalent field
- 2+ years of experience developing launch vehicle or spacecraft propulsion systems
- Knowledge of material selection and best practices for hypergolic systems
- Experience with fluid system subcomponent or pressurized component development, design, or testing (such as valves, regulators, piping systems, pumps, etc.)
- Experience in working with data acquisition systems and test instrumentation including pressure transducers, thermocouples, resistance temperature detectors (RTDs), flow meters, load cells, and accelerometers
- Experience conducting tubing/piping flexibility analysis using software packages such as Ansys, Caesar II, Bentley Autopipe, etc.
- Experience reducing the complexity of large integrated assemblies to reduce part count, cost, and lead time
- Demonstrated experience with full hardware lifecycle ownership, from blank-sheet design through full operation
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 sta
tus.
Primary Level Salary Range:
Firefly offers outstanding benefits for our employees, including generous health, dental and vision plans with low plan deductibles, parental leave, relocation benefits, 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.