Software Engineering Internship, Radiant Nuclear

Summer 2026

Salary not provided

Python

C++

Git

Los Angeles

More information about location

5 days a week in office (El Segundo, CA)

Making nuclear power portable

Be an early applicant

Making nuclear power portable

101-200 employees

B2BEnergySustainabilityManufacturing

Be an early applicant

Salary not provided

Python

C++

Git

Los Angeles

More information about location

5 days a week in office (El Segundo, CA)

101-200 employees

B2BEnergySustainabilityManufacturing

Company mission

To bring one of the world's first factory-constructed microreactors to market.

Job

Company

Role

Who you are

Currently pursuing a degree in computer science, physics, or a related technical discipline
Familiarity with Python, C++, C#, or similar object-oriented programming languages
Basic knowledge of software development practices and version control tools such as Git

Desirable

Strong self-motivation and the ability to collaborate effectively in a team environment
Interest in contributing to simulation tools or working on software testing
Familiarity with distributed software development and common design patterns is a plus
A passion for physics, hardware, or electrical engineering is highly encouraged

What the job involves

Radiant is seeking a motivated Software Engineering Intern with a strong computer science foundation to join our team
As an intern, you will work alongside mechanical, electrical, and nuclear engineers to assist in developing software tools that support simulation and analysis for reactor design, development, and safety analysis
This is an excellent opportunity to gain hands-on software development experience in a highly interdisciplinary environment
Assist in creating tooling to support a variety of simulation software packages
Contribute to internal software products that support simulation and analysis of simulation results

Our take

To support the clean energy revolution, Radiant Nuclear is developing a portable, containerized nuclear microreactor. Once launched, it will have the potential to provide power to remote parts of the world or act as a backup supply to vital infrastructure such as hospitals and data centers.

Typically, these backup systems are powered by diesel generators - making them extremely bad for the environment. Radiant's microreactors could allow the replacement of these generators whilst supplying the same critical asset support, enabling a substantial reduction in carbon footprint.

Having completed the design phase of the project, Radiant has taken a step closer towards realizing its microreactor (known as Kaleidos). The company intends to test a prototype as early as mid-2026 and has secured considerable funding to support its work towards that goal.

Kirsty

Company Specialist at Welcome to the Jungle

Company

Funding (last 2 of 6 rounds)

May 2025

$165m

SERIES C

Nov 2024

$100m

SERIES C

Total funding: $320.7m

Company benefits

Equity: Substantial incentive stock plan for all salaried employees
Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans
Vision: 100% coverage + 50% for dependents
Dental: 100% coverage, orthodontia extra, 50% for dependent
Flexible PTO policy
Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits
Team-bonding company outings, happy hours and in-person camaraderie
Beautiful El Segundo headquarters close to the Pacific Ocean

Company HQ

El Segundo, CA

Leadership

Doug Bernauer

(CEO)

Previously Senior Avionics Systems Engineer at Space Exploration Technologies and Applications Engineer at Rockwell Automation.

Victoria (Baggio) S.

(COO)

Began at the company as Head of Operations before becoming COO. Previously a Consultant at Happy Returns by PayPal and Director of Customer Service at McMaster-Carr.

Salary benchmarks

We don't have enough data yet to provide salary benchmarks for this role.

Submit your salary to help other candidates with crowdsourced salary estimates.

Share this job

View 12 more jobs at Radiant Nuclear