Materials Engineer, Moderator Materials

Radiant Industries•El Segundo, CA

About The Position

Radiant is seeking a Materials Engineer to own the development, testing, and qualification of in-core moderator and reflector materials and related manufacturing processes for the Kaleidos 1MW nuclear microreactor. The role involves materials selection, testing, analysis, and collaboration across a fast-paced, cross-functional team. The engineer will contribute to developing a portable, mass-produced nuclear reactor.

Requirements

Bachelor’s degree from an accredited institution in Materials Science and Engineering, or in Mechanical, Aeronautical, Nuclear, or Chemical Engineering with a materials science and engineering focus.
At least 2 years of experience developing, testing, and/or analyzing materials for demanding load cases and environments.
Hands-on experimental or testing experience in laboratory or production environments.

Nice To Haves

Master’s or PhD degree from an accredited institution in Materials Science and Engineering, or in Mechanical, Aeronautical, Nuclear, or Chemical Engineering with a materials science and engineering focus.
Experience developing and qualifying nuclear moderator and reflector materials for high-temperature and irradiation environments.
Knowledge of standard materials test methods and experience developing design allowables.
Self-motivation and strong organizational, written, and oral communication skills.
Demonstrated ability to collaborate with design and operations teams to deliver high-value results.
Experience using text-based software development tools such as Python.

Responsibilities

Plan and execute materials testing to obtain properties that inform design decisions.
Develop and qualify application-specific manufacturing processes, such as graphitization, hot isostatic pressing, and extrusion.
Provide expert guidance on materials selection for Kaleidos moderator and reflector components.
Lead R&D efforts for advanced moderator and reflector materials.
Develop and execute test campaigns to qualify moderator and reflector materials using in-house testing and characterization equipment, and coordinate with outside labs and vendors.
Evaluate the quality and accuracy of material-property data for use in the company materials database.
Define or improve component manufacturing processes to achieve desired material properties.

Benefits

Substantial incentive stock plan for full-time employees.
Medical coverage up to the base silver-level plan for employees, with 50% dependent coverage; plans up to Platinum are available.
Sponsored One Medical memberships for employees and dependents.
Top-tier vision plan coverage for employees, with 50% dependent coverage.
Top-tier dental plan coverage, with orthodontia available at extra cost and 50% dependent coverage.
Voluntary life, accident, hospital, and critical illness insurance, plus commuter benefits and FSA/HSA options, offered as employee-contributed benefits.
Eight weeks of paid parental leave for all parents.
Additional paid pregnancy leave for California employees.
Daily catered lunch.
Free snacks and drinks.
Flexible PTO policy.
Remote workday allocation.
Company and team-bonding events, happy hours, and in-person camaraderie.
El Segundo headquarters close to the Pacific Ocean.
Base salary, substantial equity grants, and comprehensive health benefits.