Combustion Devices - Propulsion Modelling Analyst II

Relativity Space • Long Beach, CA

116d

About The Position

The Propulsion team at Relativity is responsible for the successful development of the engines that will power the Terran R vehicle. We own their design from concept through to launch and reuse. Our team partners heavily with manufacturing, test, launch, and integration teams, striving to develop our engines in record time and to support Terran R's first launch in 2026. As part of this team, you will help build, test, and iterate on the full product lifecycle of our Aeon-R engine systems, seeing them mature and eventually bring Terran R into space.

Requirements

• Bachelor's degree in a science or engineering field.
• 2+ years relevant experience in building 0D, 1D, & 2D steady state and transient fluid/thermal models.
• Familiarity with numerical methods concepts such as ODEs, meshing & discretization, and optimization.
• Experience with engineering scripting languages such as Python and MATLAB, as well as familiarity with code version control tools such as git.
• Experience applying engineering first principles in thermodynamics, heat transfer, and fluid mechanics.
• Experience communicating and explaining complex technical information to teammates and leadership.

Nice To Haves

• Graduate degree in a science or engineering field.
• A strong commitment to accountability, collaboration, and execution.
• An authentic, introspective, and inclusive mindset towards technical, interpersonal, and team growth & development.
• Relevant experience in a rocket engine development and/or test environment.
• Exposure to experimental methods such as uncertainty estimation.
• Working knowledge of engine subsystems, such as combustion devices.
• Prior experience in aerospace is not required.

Responsibilities

• Contribute to the design and qualification of the Aeon-R combustion devices hardware, from concept to detailed design and test.
• Build tools to improve preliminary design.
• Perform reduced-order thermal-fluid analyses.
• Suggest design changes for engine hardware ranging from injectors and thrust chambers to igniters.
• Build and anchor models to test data and work closely with designers to inform design paths and validate requirement compliance.
• Involve in single-component modeling and the development of in-house analysis codes from scratch.

What This Job Offers

• Job Type: Full-time
• Career Level: Entry Level
• Industry: Transportation Equipment Manufacturing
• Education Level: Bachelor's degree
• Number of Employees: 1,001-5,000 employees