# Senior Reactor Engineer 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: Senior
- Location: El Segundo, CA
- Work setup: On-site
- Pay: $150K to $212K base salary per year (USD)
- Posted: 2026-10-15
- Apply by: 2026-11-29
- Apply: https://jobs.ashbyhq.com/radiant-industries/41f7d8df-eeb6-4454-ad13-03b67d2f7381?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/radiant-senior-reactor-engineer/

## About the role

Radiant is seeking a Senior Reactor Engineer to lead the testing and verification of critical components, mechanisms, and subsystems within the Kaleidos microreactor. You will work closely with nuclear, mechanical, thermal, controls, and test engineering teams to ensure reactor hardware meets its functional, performance, and safety requirements. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- Bachelor's degree in nuclear engineering, mechanical engineering, or a related technical discipline from an accredited institution
- 5+ years of relevant experience in reactor engineering, hardware testing, design verification, or complex hardware development
- Demonstrated experience developing and executing component or subsystem tests, including planning, instrumentation, data analysis, and performance evaluation
- Strong engineering fundamentals in mechanical systems, heat transfer, materials, instrumentation, and component performance
- Understanding of reactor operating principles, safety functions, and component-level performance requirements
- Experience developing technical procedures, establishing acceptance criteria, and evaluating results against engineering requirements

Tags: Engineering

Source: 1752vc Careers, https://www.1752.vc/careers/jobs/radiant-senior-reactor-engineer/