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Senior Software Engineer - Simulation

Radiant

Salary not specified
Aug 21, 2025
El Segundo, CA, US
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Radiant is seeking a Software Engineer to simulate physical systems for their nuclear microreactor project, aiming to improve simulation fidelity and develop software for production hardware and testing.

Requirements

  • 4+ years of professional experience in Python, C, C++, or similar object-oriented programming languages.
  • Familiarity with software development and documentation best practices, including version control in Git.
  • Experience writing or contributing to simulation tools.
  • Experience with distributed software development and familiarity with common design patterns.

Responsibilities

  • Develop models to simulate reactor physics, thermal hydraulics, and other Kaleidos systems.
  • Improve thermal fidelity of reactor components in the Digital Twin.
  • Collaborate across teams to accelerate software-in-the-loop and hardware-in-the-loop testing.
  • Own mission-critical internal products and tooling.

Other

  • Bachelor's degree in physics, mechanical engineering, or similar field from an accredited institution.
  • Highly self-motivated with strong communication skills.
  • Interest in physics, hardware, and electrical engineering.
  • Must be willing to work extended hours and weekends as necessary to accomplish our mission.
  • Must work 100% onsite at El Segundo HQ.