Senior Avionics Mechanical Engineer - Spaceflight Hardware

Relativity Space, Inc.; Long Beach (CA); On-site; USD 129,000 - 193,000; Full time

Benefits offered by this job

Generous PTO and sick leave

Learning and development stipend

Job summary

Relativity Space, Inc. is seeking a Senior Avionics Mechanical Engineer to own the design, development, and delivery of mechanical hardware for next-generation space avionics platforms, including enclosures, mounting structures, and thermal solutions.

You will ensure flight-ready designs and solve thermal and structural challenges in a fast-paced, prototype-driven environment. You should have a Bachelor's or Master's in Mechanical or Aerospace Engineering, 5+ years in aerospace mechanical design

Qualifications

• Bachelor's or Master's degree in Mechanical Engineering, Aerospace Engineering, or related field.
• 5+ years in mechanical design, packaging, or thermal management for aerospace or ruggedized electronics.
• 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 cross-functional collaboration in a fast-paced, iterating team.

Responsibilities

• Own the design, development, and delivery of mechanical hardware for next-generation avionics platforms (enclosures, mounting structures, thermal solutions).
• Ensure flight-ready avionics mechanical systems and solve thermal/structural challenges in tight packaging.
• Lead rapid iteration from first principles, perform analysis and testing, and deliver flight-ready solutions.

Skills

Mechanical design

Thermal management

Cross-functional collaboration

Hands-on hardware debugging

Strong communication

Education

Bachelor's or Master's in Mechanical/Aerospace Engineering

Tools

CAD software (SolidWorks, NX)

Structural & thermal analysis tools

Job description

Relativity Space, Inc. is seeking a Senior Avionics Mechanical Engineer to own the design, development, and delivery of mechanical hardware for next-generation space avionics platforms, including enclosures, mounting structures, and thermal solutions.

You will ensure flight-ready designs and solve thermal and structural challenges in a fast-paced, prototype-driven environment. You should have a Bachelor's or Master's in Mechanical or Aerospace Engineering, 5+ years in aerospace mechanical design