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Radiant

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Raised $300M Series D on December 18, 2025

Raised $300M Series D on December 18, 2025

Radiant is building the world’s first mass-produced portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1 MW failsafe microreactor that can be transported anywhere power is needed. Founded in 2020, Radiant plans to test its first reactor in 2026, with initial customer deployments beginning in 2028.

Los Angeles, United States

·

$300M Series C

·

Energy

·

Onsite

·

51–200

Lead DevOps Engineer

El Segundo, CA · Posted on Apr 7, 2026

IT Help Desk Associate

El Segundo, CA · Posted on Apr 6, 2026

IT Operations Manager

El Segundo, CA · Posted on Apr 6, 2026

Electrical Engineer - PCB

El Segundo, CA · Posted on Apr 5, 2026

Senior Electrical Engineer - PCB Design

El Segundo, CA · Posted on Apr 5, 2026

Senior Embedded Engineer - DSP

El Segundo, CA · Posted on Apr 3, 2026

Accounts Payable Manager

El Segundo, CA · Posted on Apr 3, 2026

Senior Electrical Technician

El Segundo, CA · Posted on Apr 2, 2026

Harnessing Technician

El Segundo, CA · Posted on Apr 2, 2026

Warehouse Operations Specialist

El Segundo, CA · Posted on Apr 2, 2026

Engineering Technician

El Segundo, CA · Posted on Apr 1, 2026

Engineering Manager, Electronics

El Segundo, CA · Posted on Mar 26, 2026

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