Senior Vehicle Fluids Systems Engineer

Relativity Space

Relativity Space

Software Engineering
Long Beach, CA, USA
Posted on Friday, April 7, 2023

Company Overview:

Relativity is the first and only company to automate aerospace manufacturing by integrating intelligent robotics, software, and proprietary metal 3D printing technology. Disrupting 60 years of aerospace, Relativity offers a radically simplified supply chain, building a rocket with 100x fewer parts in less than 60 days. Our long-term goal is to upgrade humanity’s industrial base on Earth and on Mars.


The Vehicle Engineering Team is responsible for the design, analysis, and validation of our launch vehicle. As a Fluids Engineer, you will be solving the toughest thermal fluids challenges on the rocket as part of a world-class engineering hardware team.

You will work collaboratively with propulsion, GNC, manufacturing, test, launch, and other teams to design all fluids systems necessary to successfully launch and recover a rocket. A high degree of autonomy along with an ability to prioritize work in our fast-paced environment is required. We believe varied perspectives & backgrounds strengthen our team. Prior experience in aerospace is not required

What you’ll do:

You will play a key role developing the architecture of the upcoming Terran R vehicle. You will address the most complex analytical fluids challenges on the rocket. You will need to think creatively to leverage our additive technology to integrate the design in a way that reduces mass, part count, processes and tooling required.

Here are some examples of projects you could be working on:

  • Perform analytical thermal fluid calculations to size and design compressible and incompressible fluid systems using a variety of approaches (hand calcs, simple programs, network solvers, CFD models, etc)
  • Anchor models with data from test and launch
  • Sizing at the system and component level
  • Conducting trade studies to produce architectures and designs that satisfy system requirements
  • Design fluid systems to be operated on Earth and in space
  • Analyze complex thermal fluid problems like slosh, water hammer, transient events, phase changes, etc.
  • Coordinate with GNC teams to assess integrated rocket performance
  • Create tools to enhance our team’s analysis capabilities and streamline workflow

To be successful in this role, you must be self-motivated and able to lead projects to completion with limited direction. A high degree of drive and autonomy is required. You must be flexible to changes in strategic direction and willing to go the extra mile to ensure we as a company are producing the best possible product. You will be directly responsible for mission-critical systems and processes as a technical authority for fluid systems. Along with these high expectations comes the opportunity to have a significant influence on a fast-growing startup company and to oversee rapid progress in an environment that encourages growth and risk.

What you need to know:

  • Undergraduate degree in engineering or related field
  • 4+ years of relevant technical experience**
  • Demonstrated ownership, accountability, and success in delivering complex products with minimal guidance
  • Strong engineering fundamentals in thermodynamics, fluid dynamics, and heat transfer
  • Experience with one or more fluid or thermal modeling tools for internal compressible and incompressible analysis
  • Familiarity with programming languages such as Matlab, Python, or C++
  • Proven ability to practically apply engineering fundamentals to solve real, complex problems

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.

The below-range represents Relativity Space’s current good-faith pay scale for this role. Relativity Space reserves the right to modify or update this range at any time.

Compensation is only one part of our entire total rewards package. To see some of the benefits & perks we offer, please visit here: https://px.sequoia.com/relativityspace
Hiring Range:
$127,000$163,000 USD