Senior Mechanisms Systems Engineer

About the Team:

The Mechanisms Team at Relativity Space designs and delivers the complex, high-performance mechanical systems that enable launch-vehicle flight, landing, and reusability. We own the full lifecycle of mission-critical hardware—actuators, latches, and thrust vector control (TVC) systems—while partnering deeply with Guidance, Navigation & Control (GNC), Avionics, and Software to create integrated, operable solutions. Our work spans concept development through design, analysis, test, flight operations, and recovery, always balancing performance, reliability, and build rate.

About the Role:

As a Senior Mechanisms Systems Engineer, you will be the technical and programmatic owner for large, cross-discipline mechanism systems such as thrust vector control. Reporting directly to the Mechanisms team, you will lead system-level design and integration, guiding requirements, architecture, and verification across hardware and software interfaces.
You will:

• Define system concepts of operations (CONOPS), requirements, and verification plans
• Lead integrated product activities across mechanical design, actuators, GNC, avionics, and software teams to ensure seamless system performance
• Drive development tests, functional verification, and flight readiness by authoring test plans, executing tests, and establishing success criteria
• Anticipate technical and logistical risks, develop mitigation strategies, and align priorities across engineering disciplines and schedules
• Coordinate the design, manufacturing, integration, and test schedules for complex mechanism systems
• Take hands-on ownership of emergent challenges—whether designing test fixtures, specifying sensors, writing test automation, or leading root-cause investigations

This role occasionally requires travel to test and launch sites and may involve shifted or weekend schedules to support critical milestones

About You:

• Bachelor’s degree in Mechanical, Aerospace, or related engineering field and 5+ years of relevant experience in design, manufacturing, assembly, or test of complex mechanical or electromechanical systems
• Proven ability to lead multi-disciplinary projects and deliver on ambitious schedules
• Strong technical judgment and the ability to communicate complex concepts across engineering and leadership audiences
• Demonstrated experience balancing requirements, cost, and schedule while driving system integration and verification

Nice to haves but not required:

• Background in actuator systems, flight mechanisms, or thrust vector control
• Experience with motor-control tuning and model-based design using MATLAB/Simulink
• Experience with integrated hardware/software testing and verification
• Familiarity with reusability and rapid-iteration development environments