Senior Mechanical Mechanisms Engineer - Rocket Systems

Frontdoor Defense; Long Beach (CA); On-site; USD 132,000 - 198,000; Full time

Job summary

Relativity Space in Long Beach is seeking a Senior Mechanical Engineer (Mechanisms) to lead the full design, build, and test lifecycle of Terran R mechanisms from concept to flight readiness. You will collaborate across structures, avionics, and fluids teams and own design criteria, trades, and manufacturability for fast-paced, high-impact projects.

The role requires a Bachelor's degree in engineering and 5+ years in a full-cycle design role, with strong CAD, analysis, and hands-on hardware

Qualifications

• Bachelor's degree in engineering or related field.
• 5+ years in a full cycle design engineering role (CAD, analysis, build and test).
• Fundamental knowledge of kinematic synthesis, pneumatic/hydraulic actuation, mechatronics and instrumentation.
• Fundamental knowledge of structures strength, stability and fatigue failure modes.
• Basic knowledge of manufacturing processes, materials, and surface treatments.
• Proven track record of technical problem-solving and hands-on hardware build experience.
• Communication and interpersonal skills to lead discussions on complex technical topics.

Responsibilities

• Lead the full design, build, and test lifecycle of Terran R mechanisms from concept to flight readiness.
• Collaborate across structures, avionics, and fluids teams to design and optimize mechanisms.
• Guide design criteria, subsystems requirements, and trade studies for manufacturability and speed.
• Deliver on time and budget while integrating subsystems within the primary structure.

Skills

CAD

Analysis

Build & Test

Kinematic synthesis

Pneumatic actuation

Hydraulic actuation

Mechatronics

Instrumentation

Structures strength

Fatigue failure

Manufacturing processes

Materials & surface treatments

Education

Bachelor's degree in engineering

Tools

NX

TeamCenter

ANSYS

Femap

Python

MATLAB

Job description

Relativity Space in Long Beach is seeking a Senior Mechanical Engineer (Mechanisms) to lead the full design, build, and test lifecycle of Terran R mechanisms from concept to flight readiness. You will collaborate across structures, avionics, and fluids teams and own design criteria, trades, and manufacturability for fast-paced, high-impact projects.

The role requires a Bachelor's degree in engineering and 5+ years in a full-cycle design role, with strong CAD, analysis, and hands-on hardware