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Radiant Tech Stack

Portable nuclear microreactors engineered for mass production

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

Radiant is building transportable 1 MW microreactors (Kaleidos) for distributed power deployment, with first testing targeted for 2026 and customer deployments in 2028. The stack—AWS, Kubernetes, Python, Go, Rust, FORTRAN, plus simulation tools (ANSYS, PSCAD, PLECS)—reveals a company bridging nuclear physics modeling with cloud-native DevOps. Engineering dominates the 145-person org (86 roles across senior to intern levels), reflecting the hardware-software integration and simulation complexity required to move a novel reactor design from prototype to field deployment.

Tech Stack 107 technologies

Core StackAWS Linux Kubernetes Docker Terraform Ansible Python Go Rust C# C++ Power BI CATIA SolidWorks Git Argo CD C/C++ FORTRAN PLECS PSCAD LinkedIn Recruiter Abaqus Ansys FEMAP NX Mastercam Siemens NX Fusion 360 ANSYS Beckhoff TwinCAT 3+75 more
ReplacingEquinix

What Radiant Is Building

◆Challenges

  • Meeting volumetric constraints
  • Accelerating path to commercialization
  • Capacity constraints
  • Converting financial data into insights
  • Extreme temperature environments
  • Scaling simulation infrastructure
  • Reliable supply base
  • Supply chain risk management
  • Accelerating kdu development
  • Mission-critical system reliability

▲Active Projects

  • First new commercial reactor design
  • Alternator development for nuclear-driven generator
  • Digital twin development
  • Software-in-the-loop testing
  • Digital twin visualization platform
  • Uncertainty propagation methodology for kaleidos demonstration unit
  • Create self-service dashboards
  • Kaleidos microreactor development
  • Mass-efficient transportable shielding systems
  • Ion-ramp integration

Hiring Activity

Accelerating140 roles · 85 in 30d

Department

Engineering
86
HR
10
Ops
7
Data
6
Manufacturing
5
Finance
4
Procurement
4
Sales
4

Seniority

Senior
52
Mid
34
Manager
15
Director
11
Junior
10
Lead
8
Principal
4
Intern
3

Notable leadership hires: Technical Lead, Recruiting Lead

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About Radiant

Radiant designs and manufactures portable nuclear microreactors, targeting applications where distributed, transportable power is needed. The company's flagship product, Kaleidos, is a 1 MW failsafe unit engineered for transport and deployment in remote or off-grid locations. Founded in 2020 and headquartered in El Segundo, California, Radiant is executing toward first-unit testing in 2026 with production deployments starting in 2028. The organization spans reactor design, alternator and power conversion development, digital twin simulation, supply-chain risk mitigation, and commercialization planning across 51–200 employees.

HeadquartersEl Segundo, California
Company Size51–200 employees
Founded2020
Hiring MarketsUnited States

Frequently Asked Questions

What tech stack does Radiant use?

Core stack includes AWS, Kubernetes, Docker, Python, Go, Rust, C++, and FORTRAN. Simulation and CAD: ANSYS, PSCAD, PLECS, SolidWorks, Fusion 360, NX, CATIA. Controls: Beckhoff TwinCAT 3. Infrastructure: Terraform, Ansible, Argo CD, Git.

What is Radiant working on?

Core projects: Kaleidos microreactor development, alternator design for nuclear-driven generators, digital twin and visualization platforms, software-in-the-loop testing, mass-efficient shielding, and uncertainty propagation methodology for demonstration units.

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