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Senior Turbomachinery Engineer

El Segundo, California, United States

Radiant is an El-Segundo, CA-based clean energy startup building a nuclear microreactor. A climate-friendly alternative to diesel generators, Radiant's Kaleidos 1MW microreactor will be the world's first portable, zero-emissions power source that works anywhere. We plan to test our development reactor by 2026 and if successful, it will be the first new commercial reactor design to achieve a fueled test in over 50 years. Radiant's goal is to bring one of the world's first factory-constructed microreactors to market. Our microreactor can bring power to remote parts of the world and provide backup power for life-saving applications in hospitals or disaster-relief scenarios. 

Senior Turbomachinery Engineer  

Radiant is seeking a highly motivated Senior Turbomachinery Engineer to own the high-pressure, high-temperature helium circulator through immediate testing and integration for the Kaleidos Demonstration Unit and long-term design and development for Kaleidos Production. You will be responsible for turbomachinery trade studies, component selection, mechanical design, rotodynamic analysis, hardware assembly, system testing, and integration. You will develop critical hardware at the center of the reactor primary loop while considering performance, reliability, manufacturability, mass, and cost. The ideal candidate is experienced in building early concept turbomachinery components through production and is excited about our vision to build Earth’s first mass-produced nuclear reactors. 

Responsibilities & Duties: 

  • Design, build, and test helium circulator turbomachinery for primary loop system.
  • Own end-to-end engineering of turbomachinery components, while managing turbomachinery component suppliers and enabling on-time hardware delivery  
  • Perform complex thermal and fluids analysis to drive design decisions, verify system performance, and ensure structural integrity using first-principle hand calculations and finite element tools.  
  • Perform trade studies to optimize system and meet program requirements.   
  • Develop and execute manufacturing/assembly instructions and test plans.    
  • Create and manage a Bill-Of-Materials (BOM).    
  • Own subassembly design, manufacturing, and test schedules.  
  • Own risk analysis (FMEA) for subsystems.  
  • Collect requirements, provide expertise and feedback to engineers in other functional areas via clear, constructive communication.   

Required Qualifications & Skills   

  • B.S. in Mechanical or Aerospace Engineering from accredited university.  
  • 5+ years of engineering experience in turbomachinery design, build, and operation.  

Desired Qualifications & Skills   

  • Strong knowledge of turbomachinery design and build principles.  
  • Demonstrated experience in owning end-to-end hardware development cycle, from concept, part design, manufacturing, through build and testing.  
  • Proficiency in fluids modeling of compressible and incompressible flow.  
  • Experience with turbomachinery manufacturing and design for manufacturability  
  • Takes extreme ownership of work and a high degree of responsibility.   
  • Excellent communication across multidisciplinary teams.   
  • Prior nuclear experience in not required for this role.   

Additional Requirements:

  • Must be willing to work extended hours and weekends as necessary to achieve company goals.
  • Must work 100% onsite at El Segundo HQ.

Employee Benefits for Eligible Employees:

  • Stock: Substantial incentive stock plan for all full time, salaried employees.
  • Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.
  • One Medical: Sponsored memberships for employees and their dependents. 
  • Vision: 100% top tier plan coverage + 50% for dependents.
  • Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.
  • Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.
  • Free snacks and drinks onsite. 
  • Flexible PTO policy.

We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.

Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.

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