Company profile

Radiant Tech Stack

Portable nuclear microreactors built for factory production and transport

Nuclear Electric Power Generation El Segundo, California 51–200 employees Founded 2020 Privately Held

Radiant is developing Kaleidos, a transportable 1 MW microreactor, and its stack shows a hardware company moving toward production: Siemens NX, ANSYS, STAR-CCM+ and Abaqus for simulation, TwinCAT/EtherCAT for controls, and Siemens Opcenter, Plex and SAP for the factory floor. Hiring is overwhelmingly senior engineering, while new director-level regulatory, state engagement and legislative roles point to licensing and policy work ahead of commercial deployment.

Tech Stack 132 technologies

Core StackPython C++ Oracle SAP Power BI Tableau MATLAB EtherCAT Modbus RS-422 AutoCAD Electrical Siemens NX TwinCAT Abaqus ANSYS FEMAP NX PLECS PSCAD Silicon Carbide GAN IGBT Altium Designer STAR-CCM+ ANSYS Fluent Epicor Plex Siemens Opcenter IBM DOORS Jama Connect+100 more

What Radiant Is BuildingChallenges and projects from their job posts

◆Challenges

Moving reactors from prototype to commercial deployment
Designing structures for extreme temperatures
Tight timelines for hardware integration
Closing supplier capability gaps
Grid interconnection hurdles
Replacing diesel generators at remote sites

▲Active Projects

Kaleidos microreactor development and demonstration unit testing
Kaleidos thermal CFD and structural analysis
Hardware-in-the-loop and digital twin scenario testing
Production equipment for fabricating complex mechanisms
Electrical test infrastructure development
Automation of simulation workflows

Hiring Activity

Steady100 roles · 25 in 30d

Department

Engineering

Ops

Legal

Data

Manufacturing

Sales

Finance

Seniority

Senior

Mid

Junior

Manager

Director

Principal

Staff

Intern

Notable leadership hires: Regulatory Affairs Director, State Engagement Director, Legislative Director

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About Radiant

Radiant is a privately held company headquartered in El Segundo, California, founded in 2020 with 51–200 employees. It designs portable nuclear microreactors intended for mass production, starting with Kaleidos, a 1 MW unit designed to fail safely and be shipped wherever power is needed. Target use cases include powering remote sites and displacing diesel generators. The company plans to test its first reactor in 2026, with customer deployments slated to begin in 2028. Hiring is concentrated in the United States.

HeadquartersEl Segundo, California

Company Size51–200 employees

Founded2020

Hiring MarketsUnited States

Frequently Asked Questions

What tech stack does Radiant use?

Radiant uses Siemens NX, ANSYS Fluent, STAR-CCM+, Abaqus, MATLAB, Python and C++ for engineering, TwinCAT and EtherCAT for controls, Altium Designer for electronics, and SAP, Plex and Siemens Opcenter for manufacturing.

What is Radiant working on?

Radiant is developing the Kaleidos microreactor, including thermal CFD simulations, structural analysis, demonstration unit testing, hardware-in-the-loop testing, digital twin scenarios and electrical test infrastructure.

Where is Radiant headquartered?

Radiant is headquartered in El Segundo, California, and hires in the United States.

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How this profile is built

Radiant's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →

This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.