Radiant
Senior Mechanical Engineer, Mechanisms
$134K–$185K
El Segundo, CA · On-site · Senior · Full-time · Posted Jun 16, 2026
- Experience
- 4+ years designing mechanisms and 4+ years performing stress analysis.
- Education
- Bachelor’s degree from an accredited institution in Mechanical or Aeronautical Engineering.
- Visa sponsorship
- The position involves access to technology subject to U.S. export controls; any offer is contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.
About the job
Design, analyze, manufacture, integrate, and test critical mechanisms for Radiant’s Kaleidos reactor, including systems that control reactivity or actuate safety features.
What you'll do
- Own mechanism and subassembly design, schedules, manufacturing, and testing; develop assembly instructions and test plans.
- Conduct trade studies and thermomechanical, structural, and kinematic analyses using hand calculations and finite element tools.
- Manage bills of materials, suppliers, and subsystem risk analysis (FMEA); coordinate requirements with other engineering teams.
What they ask for
- Bachelor’s degree in Mechanical or Aeronautical Engineering from an accredited institution.
- 4+ years of experience designing mechanisms.
- 4+ years of experience performing stress analysis using hand calculations and finite element tools.
Nice to have
- Experience with multi-component CAD assemblies (NX or similar), pneumatic systems, electromechanical components, or hardware that has been manufactured and deployed.
- Experience with interdisciplinary teams, GD&T, text-based software development tools, and both analytical and finite element methods.
Pay
$133.5K – $184.8K (USD, base salary)
Tools
Abaqus, Ansys, FEMAP, NX, finite element tools
Model-written summary · the original posting is authoritative