Careers

Dream Big at Firefly

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!
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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. ...

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More cleanroom space. More spacecraft in production. More missions. Endless possibilities. 🌙 ✨

More cleanroom space. More spacecraft in production. More missions. Endless possibilities. 🌙 ✨ ...

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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.

Passion

Fireflies believe in perseverance, responsiveness, and mentoring others with a focus on inspiring a better future.

Accountability

Fireflies act with integrity and take ownership of our actions, commitments, decisions, and outcomes.

Collaboration

Fireflies work in alignment across teams and communicate clearly with mutual respect for one another.

Excellence

Fireflies deliver high-quality work through technical rigor and timely disciplined execution for our customers.

Alpha team
Employees at Test Stand 5
Firefy's Elytra orbital vehicle for Elytra Mission 1
Eclipse First Stage Tanks

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.

Space for You

  • Unlimited PTO for exempt employees
  • 3-month sabbatical for every 5 years of service
  • Medical, dental, vision, life, and disability insurance
  • Mental health services
  • Paid military leave

Space for Your Family

  • 12 weeks paid maternity leave
  • 4 weeks paid spouse leave
  • $20k towards family planning: fertility, surrogacy, adoption
  • Dog friendly workplace

Space for Your Career

  • $10k/year towards trade school or college
  • $2k/year for professional development
  • Ongoing coaching to advance leadership skills

Space for Your Future

  • Employee-ownership with stock bonuses
  • 4% Safe Harbor 401(k) matching
  • Financial planning resources
  • $10k bonus for home purchase in Cedar Park, Texas
Firefly employee at launch site
Firefly family
Firefly Mission Control Room
Firefly to the Moon

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.

Back to Job Openings

Propulsion Engineer II (Valves)

  • Cedar Park, TX
  • Propulsion & Fluids
  • Full time
  • JR100131

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.

SUMMARY

At Firefly, we believe that building a reliable and inexpensive launch vehicle requires the most reliable, production efficient valves available. On the fluid components team, we design, build, test, and qualify high-performance, precision fluid components tailored to the specific needs of our Alpha launch vehicle, Eclipse launch vehicle, Blue Ghost lunar landers, and Elytra spacecraft. Our team of responsible engineers own their products for the entire product lifecycle; from initial conception through qualification and handoff to the production team.

RESPONSIBILITIES

  • Demonstrate extreme ownership of hardware
  • Conceptualize, design, develop and deliver propulsion components to high performance systems
  • Responsible for entire development lifecycle and production support as the technical expert.
  • Own a combination of Firefly developed and commercial-off-the-shelf (COTs) valves, regulators and actuators
  • Prepare content for and lead CoDRs, MRR, PDRs, TRRs, data reviews and CDRs
  • Author and execute qualification, and acceptance test plans with hands on hardware problem solving
  • Work to standardize solutions across programs and product lines
  • Improve mission cadence by identifying and implementing cost saving and risk reduction measures
  • Lead cross-functional teams of analysts, manufacturing engineers, quality engineers, supply chain representatives, and test engineers to deliver tested hardware on time
  • Resolve non-conformances and implement design changes to improve product yield and manufacturability
  • Work with the program teams to develop hardware upgrades in alignment with ambitious performance and cost goals
  • Develop simulation-based design methods and validate using subscale and full-scale testing
  • Lead failure investigations to determine root cause and implement mitigations
  • Qualify existing and new product lines following guidance from SMC-S-016 and S-080 as applicable
  • Manage multiple projects and competing priorities

QUALIFICATIONS

Required

  • BS in Aerospace Engineering or related engineering discipline
  • 3+ years of experience in a valve or fluid system design-related role.
  • Exceptional comprehension of engineering fundamentals including fluid mechanics, heat transfer, structural analysis, materials, and processes.
  • Strong understanding of fluid systems aspects such as fluids systems sizing, valve design and operation, instrumentation, flexible element design & integration and fluid fittings
  • Skilled in creating analytical/numerical models of engineering devices and processes.
  • Ability to successfully manage complex projects.
  • Works well in a collaborative, fast paced, multidisciplinary environment.
  • Demonstrated interest in advancing 'newspace'.
  • Self-motivated with minimum direction required.
  • Ability to creatively develop economical solutions.

Desired

  • Served as a Responsible, Manufacturing or Test engineer for an aerospace development project in a fluids related subsystem.
  • Component test experience.
  • Proficient with GD&T
  • Proficient with DFM
  • Proficient with FEA and/or CFD analysis
  • Knowledge of high-pressure, cryogenic, hydraulic, and pneumatic systems
  • Experience with valve and regulator design
  • Experience with liquid oxygen or other cryogenic operations
  • Experience modeling fluid networks
  • Experience with rapid development techniques for hardware

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

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.

About Us

Launch. Land. Orbit.