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At Relativity Space we’re building rockets to serve today’s needs and tomorrow’s breakthroughs. Our Terran R vehicle will deliver customer payloads to orbit meeting the growing demand for launch capacity. But that’s just the start. Achieving commercial success with Terran R will unlock new opportunities to advance science exploration and innovation pioneering progress that reaches beyond the known.
Joining Relativity means becoming part of something where autonomy ownership and impact exist at every level. Here you're not just executing tasks; you're solving problems that haven’t been solved before helping develop a rocket a factory and a business from the ground up. Whether you’re in propulsion manufacturing software avionics or a corporate function you’ll collaborate across teams shape decisions and see your work come to life in record time. Relativity is a place where creativity and technical rigor go hand in hand and your voice will help define the stories we’re writing together. Now is a unique moment in time where it’s early enough to leave your mark on the product the process and the culture but far enough along that Terran R is tangible and picking up momentum. The most meaningful work of your career is waiting. Join us.
About the Team:
The Stage Fluids team designs and delivers the propellant pressurant pneumatics and other fluid systems that turn structures into functioning rockets. The team has full ownership across design production test and flight maintaining a holistic view of Terran R focused not on isolated parts but integrated functionality. Working on-site at the factory means you’re never far from the hardware enabling rapid iteration and tight feedback loops across design and manufacturing. You won’t just be handed requirements: you’ll be expected to ask the right questions collaborate with partners across the company and ultimately find the best solutions for Terran R.
About the Role:
As a Vehicle Fluid Systems Engineer you will be responsible for the fluid system architecture and function for a given vehicle fluid subsystem. You will apply expertise in system architecture systems operations and fluid thermodynamics applications to guide hardware design system analysis manufacturing validation and operations.
• Own the vehicle fluid subsystem architecture and schematics including system control scheme system and component selection and sizing
• Conducting fluid and thermal analyses including system sizing and characterization using a variety of base analytical methods (1D steady-state fluid networks etc.)
• Leading and participating in system and hardware design and manufacturing reviews
• Defining and supporting test objectives and test campaigns to validate system design system models and overall system performance including supporting integrated vehicle testing and launch
About You:
• Bachelor’s degree (Mechanical Engineering or relevant)
• 2+ years of experience working with fluids systems
• Experience applying engineering fundamentals in system design thermodynamics fluid dynamics and heat transfer
• Experience with one or more fluid or thermal modeling tools for internal compressible and incompressible analysis
• Proficiency in Python or a similar programing language for scientific computing and automated test/simulation data analysis
Nice to haves but not required:
• Experience with launch vehicles and spacecraft
At Relativity Space we are committed to transparency and fairness in our compensation practices. Actual compensation will be determined based on experience qualifications and other job-related factors.
Compensation is only one part of our total rewards package. Relativity Space offers competitive salary and equity a generous PTO and sick leave policy parental leave an annual learning and development stipend and more! To see some of the benefits & perks we offer please visit here.
We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race religion color national origin gender sexual orientation age marital status veteran status or disability status.
If you need a reasonable accommodation please contact us at [email protected].
Skills Required
- Bachelor's degree in Mechanical Engineering or relevant field
- 2+ years of experience with fluid systems
- Experience in system design thermodynamics and fluid dynamics
- Experience with fluid or thermal modeling tools
- Proficiency in Python or similar programming for data analysis
Relativity Space Compensation & Benefits Highlights
- Healthcare Strength—The company offers comprehensive medical dental and vision coverage company-funded HSA contributions mental-health resources and access to One Medical and an EAP. Wellness supports like a stipend and gym discounts reinforce the breadth of care.
- Parental & Family Support—Generous parental leave is paired with a $10000 family-building stipend for fertility and adoption with mentions of a Carrot Fertility partnership. This combination indicates meaningful support across different family needs.
- Leave & Time Off Breadth—The stated policy includes 15 PTO days per year with separate sick-time accruals 11 company holidays and 2 personal-choice holidays. This structure provides multiple avenues for planned and unplanned time away.
Relativity Space Insights
What We Do
Relativity Space is on a mission to better connect humanity to space and the universe beyond our planet. Our medium-to-heavy lift reusable rocket Terran R will deliver customer payloads to orbit meeting the growing demand for launch capacity. But that’s just the start. Achieving commercial success with Terran R will unlock new opportunities to advance science exploration and innovation pioneering progress that reaches beyond the known.
Why Work With Us
Joining Relativity means becoming part of something where autonomy ownership and impact exist at every level. Here you're not just executing tasks; you're solving problems that haven’t been solved before helping develop a rocket a factory and a business from the ground up.
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Relativity Space Offices
OnSite Workspace
At Relativity Space we are an office-first company. We believe our best work happens in person—where collaboration is faster problem-solving is sharper and ideas flow more freely.
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