Radiant Industries

Senior Mechanisms Engineer

El Segundo, CA · Senior · Contract

Sponsorship not specifiedDetected 41 days ago

HRISANSYSStructural AnalysisCommunication

About the role

You will solve unique challenges creating efficient and reliable mechanisms that control reactivity or actuate critical safety features.
You will be responsible for the following: trade studies, material selection, detailed structural analysis, assembly, integration, and testing.
Ownership of critical mechanisms such as the control blade actuator or air jacket valves.

Perform detailed thermomechanical analysis (static strength, durability/fatigue) and kinematic analysis to determine structural integrity and performance margins using both hand calculations and finite element tools.
Develop and execute manufacturing/assembly instructions and test plans.
Create and manage a Bill-Of-Materials (BOM).
Find and develop suppliers for components.
Own subassembly design, manufacturing, and test schedules.
Own risk analysis (FMEA) for subsystems.
Radiant is an El Segundo, CA-based startup building the world's first mass-produced, portable nuclear microreactors.
Radiant's unique, practical approach to nuclear development leverages modern software engineering to rapidly deliver safe, factory-built microreactors that use existing, well-qualified materials.
Conduct trade studies and develop designs to meet program requirements.

Bachelor's degree from an accredited institution in Mechanical or Aeronautical Engineering.
4+ years of experience designing mechanisms.
4+ years of experience performing stress analysis using both hand calculations and finite element tools (Abaqus, Ansys, FEMAP, or similar).
Desired Qualifications &
Experience designing hardware that was manufactured, deployed, and iteratively improved.
Experience designing pneumatic systems.
Experience integrating electromechanical components such as motors or encoders.
Experience working with interdisciplinary teams.
Solid understanding and application of GD&T.
Proficiency with both "hand calc" analytical methods and higher fidelity finite element-based analysis methods.
Ability to derive free-body diagrams for systems with which one was not previously familiar.
Self-motivated with strong organizational, written, and oral communication skills.

100% top tier plan coverage + 50% for dependents.
Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits.
8-weeks of paid parental leave for all parents.
Additional paid pregnancy leave for CA employees.
Flexible PTO policy.

recruiting@radiantnuclear.com.
We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.
This position involves access to technology that is subject to U.S. export controls.
Any job offer made will be contingent upon the applicant's capacity to serve in compliance with U.S. export controls.
Founded in 2020, Radiant is on track to test its first reactor at the Idaho National Laboratory this summer, with initial customer deliveries beginning in 2028.

This listing is sourced directly from Radiant Industries's careers page and normalized into a canonical job model.