KP-SAM Code Development Engineering Intern - Summer 2026

Kairos Power • Alameda, CA

3d • $32 - $34 • Onsite

About The Position

Kairos Power is seeking a highly motivated Systems Code Developer Intern with experience relevant to software development, safety analysis, and verification and validation (V&V) of numerical models. In this role, you will contribute to the development of KP-SAM code, an advanced thermal hydraulic and radioactive source term system simulation code for the Kairos Power Fluoride Salt-Cooled High Temperature Reactor (KP-FHR) design. The code will be used by Kairos Power safety analysts to perform all safety related transient analyses and by other teams for design analysis and simulation. Your contributions will include the assessment and development of new models and methods, verification and validation, and documentation. KP-SAM is based on Argonne National Lab developed SAM code.

Requirements

• Currently pursuing Masters or PhD Nuclear Engineering, Mechanical Engineering, or related field
• Programming experience: C/C++, Git, FORTRAN, LaTeX

Nice To Haves

• Experience with DOE MOOSE framework a plus
• Experience with system analysis codes, SAM, RELAP, SASYYS a plus
• Demonstrated coursework or experience in numerical methods, thermal-fluids/heat transfer, or computational modeling is preferred.

Responsibilities

• Assess new models and features, and add additional minor improvement and enhancement.
• Verify and validate the developed model, and demonstrating its use in relevant transient scenarios.
• Document the newly developed models in theory manual, assessment report, and user manual.
• Support broader KP-SAM development activities, including troubleshooting, defect resolution, and code maintenance under guidance from the team.
• Other duties as assigned.

Benefits

• Competitive compensation packages
• Medical, dental and vision benefits for employees and their dependents
• Paid Vacation
• 401(k) and pre-tax health insurance, dependent care, and commuter benefits (FSA)

What This Job Offers

• Career Level: Intern
• Number of Employees: 251-500 employees