Radiant Jobs
Open positions at Radiant, newest first. Each listing links to the company's own application page.
- Open positions
- 95
Newest Radiant openings
Staff Nuclear Engineer
Direct ATSEl Segundo, CA · 2 days ago
Radiant is seeking a Staff Nuclear Engineer to provide technical expertise across the nuclear design and analysis of Kaleidos.
Program Development Lead
Direct ATSEl Segundo, CA · 2 days ago
Radiant is seeking a Program Development Lead to write, own and maintain the programmatic requirements that DOE and other regulatory entities require for our operations, including conduct of
Principal Thermal Modeling Engineer
Direct ATSEl Segundo, CA · 4 days ago
Radiant is seeking a Principal Thermal Modeling Engineer with deep expertise in CFD and thermal FEA to set the technical direction for thermal and fluid simulation of the Kaleidos microreact
Senior Operations Associate
Direct ATSEl Segundo, CA · 4 days ago
Radiant is seeking a Senior Operations Associate to own operational projects from start to finish.
Principal Turbomachinery Engineer
Direct ATSEl Segundo, CA · 4 days ago
Radiant is seeking a Principal Turbomachinery Engineer to serve as the Responsible Engineer for the turbomachinery within our nuclear-driven power generation system.
Site Lead
Direct ATSEl Segundo, CA · 4 days ago
Radiant is seeking a Site Lead to own site readiness, transport, installation and startup coordination for our microreactor deliveries.
Senior Regulatory Engineer
Direct ATSEl Segundo, CA · 5 days ago
Radiant is seeking a driven Senior Regulatory Engineer who loves to think outside the box and challenge convention; in this role you will support the license application approval process wi
Staff Regulatory Engineer
Direct ATSEl Segundo, CA · 5 days ago
Radiant is seeking a driven Staff Regulatory Engineer who loves to think outside the box and challenge convention; in this role you will support the license application approval process…
Staff Turbomachinery Engineer
Direct ATSEl Segundo, CA · 7 days ago
Radiant is seeking a Staff Turbomachinery Engineer to serve as the Responsible Engineer for the turbomachinery within our nuclear-driven power generation system.
Metrology Specialist
Direct ATSEl Segundo, CA · 10 days ago
We are looking for a Metrology Specialist to help build and advance Radiant’s precision measurement and verification capabilities as we scale advanced reactor manufacturing.
Manager of Quality Control
Direct ATSEl Segundo, CA · 11 days ago
We are looking for a Quality Control Manager to build and lead Radiant's inspection, nonconformance control, and metrology operations as we transition from reactor development to scaled…
Accounts Payable Manager
Direct ATSEl Segundo, CA · 12 days ago
Radiant is seeking an AP Manager to own our end-to-end accounts payable operations.
El Segundo, CA (On-site) · 18 days ago
Radiant is seeking a Principal or Staff Electrical Engineer to define and lead the electrical architecture for Kaleidos, our commercial microreactor targeted for customer deployment in 2028.
- Full-time
- Director
- 8+ years
- Custom PCB design (multilayer and mixed-signal)
- Schematic capture and PCB layout (Altium, Cadence, or similar)
- Signal integrity, power integrity, grounding, EMI/EMC mitigation
El Segundo, CA · 18 days ago
Radiant is seeking a Senior Electrical Engineer, HIL to lead the design, build, and maintenance of Radiant’s electrical test infrastructure for Kaleidos, our commercial microreactor targeted
El Segundo, CA (On-site) · 19 days ago
Radiant is seeking a highly motivated Materials Engineer to own development, testing, and qualification of in-core moderator and reflector materials and related manufacturing processes…
- Full-time
- Mid-level
- 2+ years
- materials testing
- materials selection
- high-temperature and irradiation materials qualification
El Segundo, CA (On-site) · 23 days ago
Radiant is seeking a highly motivated Senior Fluid Systems Engineer to own critical Kaleidos fluid systems from preliminary design through build and production.
- Full-time
- Senior
- 5+ years
- fluid system architecture design
- fluid dynamics
- thermodynamics
Senior Reactor Engineer
On-siteEl Segundo, CA (On-site) · 23 days ago
Radiant is seeking a Senior Reactor Engineer to lead the testing and verification of critical components, mechanisms, and subsystems within the Kaleidos microreactor.
- Full-time
- Senior
- 5+ years
- component and subsystem testing
- test instrumentation and data acquisition
- root cause analysis
Staff Fluid Systems Engineer
On-siteEl Segundo, CA (On-site) · 23 days ago
Radiant is seeking a highly motivated Staff Fluid Systems Engineer to own critical Kaleidos fluid systems from preliminary design through build and production.
- Full-time
- Lead / Staff
- 8+ years
- fluid system architecture design
- heat exchanger design and analysis
- fluid dynamics and thermodynamics
El Segundo, CA (On-site) · 23 days ago
We are seeking a T&E (Travel & Expense) Specialist to manage the processing and review of employee T&E activity and credit card charges for our nuclear energy company.
- Contract
- Mid-level
- 3+ years
- T&E processing
- expense reconciliation
- Microsoft Excel
El Segundo, CA (On-site) · 23 days ago
Radiant is seeking a highly motivated Lead Nuclear Materials Engineer to lead Radiant’s nuclear materials team in the development, testing, and qualification of materials and related…
- Full-time
- Lead / Staff
- 5+ years
- nuclear materials
- materials qualification
- material test methods
How Rolev.ai helps you apply to Radiant
Rolev.ai is a job search and application tool for US job seekers. It shows which Radiant jobs fit your resume, tailors your resume to each posting, and prepares the application for you to review.
See how you fit
Openings from employer career sites are ranked against your whole resume—and searchable inside Claude, ChatGPT, and Cursor via Rolev.ai MCP.
Tailor without inventing
Every change to your resume is checked against your original. New experience goes in only with your yes—zero fabricated claims.
Draft the full kit
Tailored and Full Match resumes, role-specific cover letters, and answers to employer screening questions are prepared in seconds.
1-Click Extension Autofill
The Chrome extension fills the employer's Greenhouse, Workday, Lever, or Ashby form in 1 click. You review it and press Submit.