Senior Engine Assembly Engineer, Aeon-R Propulsion

Relativity Space; Long Beach (CA); On-site; USD 104,000 - 156,000; Full time

Benefits offered by this job

Competitive salary

Equity

PTO & sick leave

Parental leave

Learning stipend

Job summary

Relativity Space is seeking an Engine Assembly Responsible Engineer to own the Aeon‑R engine layout across configurations, design integration hardware, and collaborate with cross‑functional teams to optimize performance and manufacturability.

You will lead CAD model creation, mass tracking, and interface control, driving change management and partnering with Engine Integration to scale production. This role offers hands-on design leadership within a pioneering aerospace team.

Qualifications

• Bachelor’s degree in science, engineering, technology, or mathematics.
• 2+ years of fluid and/or structural design experience.
• Experience with CAD software.
• Detail‑oriented and able to follow through.
• Ability to apply fluid, thermal, structural, and mechanical design fundamentals.

Responsibilities

• Own the overall layout and packaging of Aeon-R engines across development, qualification, and production configurations.
• Design and analyze final integration hardware such as secondary structures, manifolds, tubing, and fittings.
• Collaborate with component owners to drive toward optimal engine design.
• Lead clean-sheet conceptual design and layouts for new/upgraded engine configurations.
• Create and release top-level CAD models of the engine assembly.
• Track mass projections for Aeon-R engines.
• Own the Interface Control Diagram for Aeon-R engines with partners.
• Champion configuration and change management for Aeon-R engines.
• Partner with Engine Integration engineers to build and ship engines at increasing rate.

Skills

Fluid design

Structural design

CAD software

Detail oriented

Project scheduling

Education

Bachelor’s degree in STEM

Tools

Siemens NX

Teamcenter

ANSYS Workbench

Job description

Relativity Space is seeking an Engine Assembly Responsible Engineer to own the Aeon‑R engine layout across configurations, design integration hardware, and collaborate with cross‑functional teams to optimize performance and manufacturability.

You will lead CAD model creation, mass tracking, and interface control, driving change management and partnering with Engine Integration to scale production. This role offers hands-on design leadership within a pioneering aerospace team.