Join Radiant as a Thermal Engineer to develop and execute thermal analysis for innovative portable nuclear microreactors.
Posted by employer 4 days ago
First seen on Joblaze 3 days ago
Last verified on the company career page 1 day ago
What you'll build
- Develop and execute thermal analysis and CFD
- Document analysis results
- Expand CFD capabilities
- Own pipeline for producing analysis geometry
- Develop methods and calculations for thermal analysis
Must have
- BS or MS in Chemical Engineering, Mechanical Engineering, Aerospace Engineering, or related discipline
- Graduating in December 2026 or Spring 2027
Nice to have
- Knowledge of reactor physics
- Prior internship experience
Requirements
- Education
- Bachelor's degree
Not disclosed in this posting: compensation, years of experience, visa sponsorship.
Benefits
Joblaze summary
The Thermal Engineer at Radiant focuses on conducting thermal analysis and computational fluid dynamics (CFD) to assess the performance of the company's portable nuclear microreactors. Key skills include a strong foundation in engineering principles, particularly in thermal analysis, and the ability to work independently in a fast-paced startup environment. This role is ideal for new graduates with a background in Chemical, Mechanical, or Aerospace Engineering, who are eager to contribute to innovative energy solutions. Radiant's collaborative team is dedicated to advancing nuclear technology for clean energy deployment.
Joblaze insights
- Listed 3 days ago — first seen on Joblaze September 19, 2026. Last confirmed on Radiant's careers page September 21, 2026.
Quick facts
- Is the 2027 New Graduate - Thermal Engineer role remote?
- No — this is an on-site role in El Segundo, CA.
- Where is the role based?
- Radiant is hiring for this position in El Segundo, CA.
- What seniority level is this role?
- Radiant targets junior candidates for this position.
- Is this full-time or contract?
- Full-time for this 2027 New Graduate - Thermal Engineer role at Radiant.
From the original posting
Radiant is seeking a highly motivated Thermal Engineer to join the team.
Responsibilities:
Develop and execute thermal analysis and CFD to evaluate design and performance of Kaleidos systems.
Document analysis results to communicate clear and actionable outputs.
Expand CFD capabilities, accuracy, and efficiencies via methods and workflow development projects.
Own pipeline for producing analysis geometry from mechanical design CAD
Develop methods and calculations to support and build confidence in lower-fidelity thermal analysis methods.
Qualifications:
BS or MS in Chemical Engineering, Mechanical Engineering, Aerospace Engineering, or related discipline.
Graduating in December 2026 or Spring 2027.
A high level of independence in solving challenging engineering tasks is preferred.
Ability to seek out resources and proactively ask questions to finish projects through completion effectively, accurately, and timely.
Ability to work in a fast-paced startup environment with a proactive and collaborative attitude.
Genuinely excited for our mission to rapidly deploy nuclear microreactors to remote locations requiring abundant, clean energy.
Knowledge of reactor physics will provide useful context but is not necessary.
Prior internship experience helpful but not required.
Benefits and Perks
Stock: Substantial incentive stock plan for all full-time employees.
Daily catered lunch. Free snacks and drinks.
Flexible PTO policy. Remote workday allocation.
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