Avionics Mechanical Engineer II

relativity· Avionics Engineering
Apply Now ↗

About this role

At Relativity Space, we’re building rockets to serve today’s needs and tomorrow’s breakthroughs. Our Terran R vehicle will deliver customer payloads to orbit, meeting the growing demand for launch capacity. But that’s just the start. Achieving commercial success with Terran R will unlock new opportunities to advance science, exploration, and innovation, pioneering progress that reaches beyond the 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. Now is a unique moment in time where it’s early enough to leave your mark on the product, the process, and the culture, but far enough along that Terran R is tangible and picking up momentum. The most meaningful work of your career is waiting. Join us.

About The Role

As an Avionics Mechanical Engineer for Terran R, you will own the design, analysis, development, and delivery of electro mechanical systems supporting Terran R Avionics. This includes enclosures, electrical interfaces, thermal accommodations, and interfaces to launch vehicle systems. You will be responsible for ensuring the delivered Avionics can survive launch and space environments, and for solving complex thermal and structural challenges in tight, mass-efficient packaging.

This is a hands-on role for a self-driven engineer who thrives in a fast-paced environment. You’ll work from first principles to iterate on designs, perform analysis and testing, and help drive the delivery of flight-ready avionics systems.

 About You

  • Bachelor’s or Master’s degree in Mechanical Engineering, Aerospace Engineering, or a related field
  • 3+ years of experience in mechanical design, packaging, and thermal management for aerospace or ruggedized electronic systems
  • Proven ability to deliver mechanical systems from concept through qualification and flight
  • Proficiency with CAD (SolidWorks, NX, or equivalent) and analysis tools for structural and thermal performance
  • Hands-on experience building, testing, and debugging hardware in a lab environment
  • Strong communication skills and comfort working cross-functionally in a fast-paced, rapidly iterating team environment

Nice To Haves But Not Required

  • Familiarity with NASA or other spaceflight structural verification standards, environmental testing and qualification
  • Experience designing mechanical systems for launch vehicle or spacecraft avionics
  • Experience designing mechanical components for power systems and/or batteries, including material selection and thermal management

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:
$104,000—$156,000 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 accommodations@relativityspace.com.

Please note: Relativity Space does not accept unsolicited resumes, candidate profiles, or referrals from recruitment agencies or search firms. Any unsolicited submission - via email, our website, social media, or directly to an employee - will be deemed the property of Relativity Space, and no fee will be owed absent a current, fully executed agreement with Talent Acquisition that specifically authorizes submissions for the applicable role.

Frequently Asked Questions

Is the salary disclosed for the Avionics Mechanical Engineer II position at relativity?
The salary for this Avionics Mechanical Engineer II role at relativity is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Avionics Mechanical Engineer II position at relativity located?
This Avionics Mechanical Engineer II role at relativity is based in Long Beach, California, United States. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Which team or department does the Avionics Mechanical Engineer II at relativity belong to?
This Avionics Mechanical Engineer II position is part of the Avionics Engineering department at relativity. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Avionics Mechanical Engineer II position at relativity?
Click the "Apply Now" button on this page. You will be redirected to relativity's official application portal hosted on greenhouse where you can submit your application directly.
When was the Avionics Mechanical Engineer II job at relativity posted?
This Avionics Mechanical Engineer II position at relativity was posted on Sep 23, 2026. Apply as soon as possible — early applications are often reviewed first.
Avionics Mechanical Engineer II
relativity
Apply for this role ↗

You'll be redirected to relativity's official application page on Greenhouse.