Summer 2026 Internship - Software Engineering at Radiant · El Segundo

Summary: Radiant is seeking a motivated Software Engineering Intern with a strong computer science foundation to join our team. As an intern, you will work alongside mechanical, electrical, and nuclear engineers to assist in developing software tools that support simulation and analysis for reactor design, development, and safety analysis. Responsibilities: - Assist in creating tooling to support a variety of simulation software packages - Contribute to internal software products that support simulation and analysis of simulation results Required Qualifications: - Currently pursuing a degree in computer science, physics, or a related technical discipline - Familiarity with Python, C++, C#, or similar object-oriented programming languages - Basic knowledge of software development practices and version control tools such as Git Preferred Qualifications: - Strong self-motivation and the ability to collaborate effectively in a team environment - Interest in contributing to simulation tools or working on software testing - Familiarity with distributed software development and common design patterns is a plus - A passion for physics, hardware, or electrical engineering is highly encouraged Required Skills: Python, C++, C# Important Skills: Software development practices, Version control (Git) Nice-to-Have Skills: Interest in simulation tools, Distributed software development, Common design patterns, Passion for physics, Passion for hardware, Passion for electrical engineering Internship Start Date: Start in 2026 Summer Benefits: Stock: Substantial incentive stock plan for all full-time 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/HSA are offered as employee contributed benefits., 8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees., Daily catered lunch. Free snacks and drinks., Flexible PTO policy. Remote workday allocation., Company and team-bonding events, happy hours and in-person camaraderie., Beautiful El Segundo headquarters close to the Pacific Ocean.