Senior Mechanical Engineer (Sheet Metal Structures) (Hiring Immediately)

Confidential • el segundo, ca, United-States • Posted June 19, 2026

Location el segundo, ca
Job Type Full-time
Category nan
Posted June 19, 2026

Senior Mechanical Engineer (sheet Metal Structures) Location: El Segundo, California, United States Compensation: $133,500 – 207,900 USD / year Job Tags: Hardware About The Role Radiant is seeking a highly motivated Senior Mechanical Engineer to design and develop critical structures within Kaleidos. You will solve unique challenges creating efficient and reliable structures that facilitate fission while surviving extreme temperature environments and meeting volumetric constraints. You will be responsible for the following: trade studies, material selection, detailed structural analysis, assembly, integration, and testing. You will have an instrumental impact of fueling the first new commercial reactor design in over 50 years by 2026. Responsibilities & Duties Ownership of critical structures such as mass-efficient transportable shielding systems, container system, and high temperature graphite and metallic systems. Conduct trade studies and develop designs to meet program req...

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