# Nuclear Engineer, Core Physics at Radiant

- Company: Radiant
- What the company does: Radiant builds Kaleidos, a portable, factory-built nuclear microreactor that delivers a megawatt of clean power anywhere it is needed. Backed by a16z, Felicis and USV.
- Company website: https://www.radiantnuclear.com
- Type: Startups
- Level: Mid level
- Location: El Segundo, CA
- Work setup: On-site
- Pay: $107K to $146K base salary per year (USD)
- Posted: 2026-08-07
- Apply by: 2026-10-08
- Apply: https://jobs.ashbyhq.com/radiant-industries/b06c208d-7e4d-4f56-a2c8-4839c846efc1
- Page: https://www.1752.vc/careers/jobs/radiant-nuclear-engineer-core-physics/

## About the role

Radiant is a seeking a Nuclear Engineer, Core Physics responsible for designing and implementing nuclear-specific testing operations at our 2026 demonstration. You will be responsible for the design of a large portion of the test campaign, which includes providing analysis to verify that the proposed testing is both safe and meets the test’s objectives. This position will work closely with nuclear engineers to establish test success criteria and systems / operations engineers to implement written procedures.

## What they're looking for

- Bachelor’s degree in nuclear engineering or equivalent degree from an accredited institution
- 2+ years of experience with reactor operations
- Experience with radiation transport methods, including with codes such as MCNP/OpenMC/Serpent
- Knowledge of thermal hydraulic fundamentals
- 4+ years of experience with reactor operations
- Direct experience as a reactor operator of an existing nuclear reactor

Tags: Engineering