Senior Mechanisms Systems Engineer

Relativity Space; City of Long Beach (NY); On-site; USD 132,000 - 198,000; Full time

Benefits offered by this job

Equity

PTO & sick leave

Parental leave

Learning stipend

Job summary

Relativity Space is seeking a Senior Mechanisms Systems Engineer to own large, cross-discipline mechanism systems like thrust vector control. You will lead system-level design, requirements, and verification across hardware and software interfaces, reporting to the Mechanisms team.

You will drive integrated product activities across mechanical design, actuators, GNC, avionics, and software teams to ensure seamless system performance and flight readiness.

Qualifications

• Bachelor's degree required in Mechanical, Aerospace, or related engineering field.
• 5+ years of experience in design, manufacturing, assembly, or test of complex mechanical or electromechanical systems.
• Ability to lead multi-disciplinary projects and deliver on ambitious schedules.
• Strong technical judgment and ability to communicate complex concepts across audiences.

Responsibilities

• Define system concepts of operations (CONOPS), requirements, and verification plans.
• Lead integrated product activities across mechanical design, actuators, GNC, avionics, and software teams.
• 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—designing test fixtures, specifying sensors, writing test automation, or leading root-cause investigations.

Skills

Systems engineering

Project leadership

Communication

Trade-off analysis

Education

Bachelor's degree in Mechanical/Aerospace or related engineering

Job description

About the Team:

At Relativity Space, we’re building rockets to serve today’s needs and tomorrow’s breakthroughs. OurTerran R vehicle will deliver customer payloads to orbit, meeting the growing demand for launchcapacity. But that’s just the start. Achieving commercial success with Terran R will unlock newopportunities to advance science, exploration, and innovation, pioneering progress that reaches beyondthe known.

Joining Relativity means becoming part of something where autonomy, ownership, and impact exist at every level. Here, you’re not just executing tasks; you’re solving problems that haven’t been solved before, helping develop a rocket, a factory, and a business from the ground up. Whether you’re in propulsion, manufacturing, software, avionics, or a corporate function, you’ll collaborate across teams, shape decisions, and see your work come to life in record time. Relativity is a place where creativity and technical rigor go hand in hand, and your voice will help define the stories we’re writing together. Nowis a unique moment in time where it’s early enough to leave your mark on the product, the process, andthe culture, but far enough along that Terran R is tangible and picking up momentum. The mostmeaningful work of your career is waiting. Join us.

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

At Relativity Space, we are committed to transparency and fairness in our compensation practices. Actual compensation will be determined based on experience, qualifications, and other job-related factors.

Compensation is only one part of our total rewards package. Relativity Space offers competitive salary and equity, a generous PTO and sick leave policy, parental leave, an annual learning and development stipend, and more! To see some of the benefits & perks we offer, please visit here.

Hiring Range:

$132,000 — $198,000 USD

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.

If you need a reasonable accommodation, please contact us at [e-mail].