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Hybrid Materials Engineer, Shielding Materials

Radiant · El Segundo, Estados Unidos De América · Hybrid

  • Professional
  • Oficina en El Segundo
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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. 

Materials Engineer

Radiant is seeking a highly motivated Materials Engineer to own development, testing, and qualification of radiation shielding materials and related manufacturing processes (mixing, forming, curing, coating, etc.) used in the Kaleidos 1MW nuclear microreactor. The ideal candidate takes great ownership of their work end-to-end, is proficient in materials selection, testing, and analysis, and is excited to work in a highly cross-functional, fast-paced environment. You will be a key contributor to building the world's first mass-produced, rapidly deployable nuclear reactor. 

Responsibilities & Duties  

  • End-to-end ownership of shielding materials for Kaleidos and additional nuclear applications.
  • Plan and execute materials testing of nuclear shielding materials to obtain material properties and inform design decisions.
  • Provide expert guidance in selection, design, and use of radiation shielding materials to mitigate neutron, gamma, and other forms of radiation.
  • Identify, procure, and operate equipment for materials characterization and testing.
  • Evaluate data quality and accuracy of material property data for use in company materials database.
  • Define or improve manufacturing processes of components to achieve desired material properties.

Required Qualifications & Skills  

  • Bachelor’s degree from an accredited institution in Materials Science and Engineering, or in Mechanical, Aeronautical, Nuclear, or Chemical Engineering with a materials science and engineering focus.  
  • Hands-on experimental or testing experience in laboratory or production environments.

Desired Qualifications & Skills  

  • Master’s or PhD degree from an accredited institution in Materials Science and Engineering, or in Mechanical, Aeronautical, Nuclear, or Chemical Engineering with a materials science and engineering focus.  
  • 2+ years of experience working in the development, testing, and/or analysis of materials for demanding load cases and environments.
  • Experience with radiation shielding materials development and qualification.
  • Experience with composite materials, such as polymer matrix composites (PMCs), concrete, or ceramic matrix composites (CMCs).
  • Experience with ceramic coating development and qualification for radiation environments.
  • Knowledge of standard test methods for materials and experience with development of design allowables.
  • Self-motivated with strong organizational, written, and oral communication skills. 
  • Demonstrated ability to work collaboratively with design and operations teams to deliver high-value results.
  • Experience with using text-based software development tools (Python or Similar).

Additional Requirements

  • Must be willing to work extended hours and weekends as necessary to accomplish our mission.
  • 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.