Principal Thermal-Hydraulics Engineer

The role

You will set the technical direction for thermal and fluid simulation of the Kaleidos microreactor. You will lead complex modeling problems, define simulation methods, and mentor engineers.

What you will do

• Serve as technical authority for thermal CFD and thermal FEA modeling of Kaleidos reactor systems
• Define modeling strategy, methodology, and best practices for turbulent flow, heat transfer, and multi-physics interactions
• Lead model verification and validation by correlating simulation results with test data
• Architect automated simulation workflows and tooling
• Lead development of reduced-order analysis methods
• Influence reactor, cooling, and shielding design decisions
• Mentor and develop engineers
• Collaborate across disciplines to define analysis requirements and resolve technical tradeoffs

Required qualifications

• Bachelor’s degree in engineering, physics, or a similar field from an accredited institution
• 10+ years of relevant industry experience
• Extensive experience with STAR-CCM+, Ansys Fluent, or other commercial CFD codes
• Mastery of finite element and computational fluid dynamics principles and methods
• Proficiency with CAD software (Siemens NX)
• Experience building automated simulation workflows and scripting tools
• Demonstrated ability to mentor engineers and communicate complex technical results

Nice to have

• Advanced degree (MS or PhD)
• Experience with radiation heat transport modeling
• Knowledge of nuclear reactor design, thermal-hydraulics, or safety analysis
• Experience with multi-physics coupling, such as thermal-structural or neutronics-thermal
• Experience with reduced-order modeling or system-level thermal-hydraulic codes
• Experience with regulatory or safety-basis analysis
• Driven, self-motivated, and takes ownership of work end to end
• Former or current aerospace or automotive industry experience

Benefits

• Substantial incentive stock plan for all full-time employees
• Medical: 100% up to base silver level plan for employee + 50% dependents
• One Medical: Sponsored memberships for employees and their dependents
• Vision: 100% top tier plan coverage + 50% for dependents
• Dental: 100% top tier plan coverage + 50% for dependents
• Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA offered as employee contributed benefits
• 8-weeks of paid parental leave for all parents
• Additional paid pregnancy leave for CA employees
• Nuclear Engineering Certificate Program: 100% covered educational program with Penn State University
• Daily catered lunch
• Free snacks and drinks
• Flexible PTO policy

Before you apply

• Any job offer will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls

About the company

Radiant is an El Segundo, CA-based company building the world's only mass-produced, transportable nuclear microreactors. Founded in 2020, Radiant is under contract to deliver power to the U.S. Army, Navy and Air Force.