Senior Fluid Systems Engineer

At Relativity Space were building rockets to serve todays needs and tomorrows breakthroughs. OurTerran R vehicle will deliver customer payloads to orbit meeting the growing demand for launchcapacity. But thats just the start. Achieving commercial success with Terran R will unlock newopportunities to advance science exploration and innovation pioneering progress that reaches beyondthe known.

Joining Relativity means becoming part of something where autonomy ownership and impact exist at every level. Here youre not just executing tasks; youre solving problems that havent been solved before helping develop a rocket a factory and a business from the ground up. Whether youre in propulsion manufacturing software avionics or a corporate function youll 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 were writing together. Nowis a unique moment in time where its early enough to leave your mark on the product the process andthe culture but far enough along that Terran R is tangible and picking up momentum. The mostmeaningful 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 youre never far from the hardware enabling rapid iteration and tight feedback loops across design and manufacturing. You wont just be handed requirements: youll 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:

In order to be successful in this role you should be someone who thrives in ambiguity and isable to lead their own projects into completion. A high degree of drive and autonomy is must be flexible to changes in strategic direction and willing to push your understandingand intuition to ensure we as a company are producing the best possible product. You will bedirectly responsible for mission-critical systems and processes as a technical authority for one ormultiple fluid systems and/or processes on the launch vehicle. Along with these highexpectations comes the opportunity to have a significant influence on a fast-growing startupcompany and to oversee rapid progress in an environment that encourages growth and risk.

In this role you will be responsible for the design and analysis of the fluid systems that ensure reliable and efficient operation of Terran R vehicles. Specific responsibilities will include:

• Conducting trade studies to produce architectures and designs that satisfy system requirements
• Sizing at the system and component level
• Conducting fluid and thermal analyses including system performance prediction and characterization using a variety of analytical methods (1D steady-state transient fluid networks etc.)
• Creating tools to enhance our teams analysis capabilities and streamline workflow
• Participating in design and manufacturing reviews
• Owning and leading test campaigns to validate system design and performance
• Anchoring models with data from test and launch

About You:

• Bachelors degree (Mechanical Engineering or relevant)
• 5 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
• Experience with programming languages such as Matlab Python or C

Nice to haves but not required:

• Experience with launch vehicles and spacecraft

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 .