Nuclear Safety Analysis Engineering Intern - Summer

Nuclear Safety Analysis Engineering Intern - Summer 2026

Company Overview

Kairos Power is a new nuclear energy technology and engineering company whose mission is to enable the world’s transition to clean energy, with the ultimate goal to dramatically improve people’s quality of life while protecting the environment. This goal will be accomplished through the commercialization of the fluoride-salt-cooled, high-temperature reactor (FHR) that can be deployed with robust safety, affordable costs, and flexible operation to accommodate the expansion of variable renewables.

Job Summary

Kairos Power is seeking a highly motivated Safety Analysis Intern to join our Safety Analysis team. Your primary responsibilities will include developing analysis methodologies for fluoride salt-cooled high-temperature reactor (FHR) systems and establishing automated workflows that will improve efficiency and consistency of calculations performed by the safety analysis team. Additional responsibilities will include interfacing with design, instrumentation and control, materials, chemistry, and other teams to fully define the FHR safety case.

This work will play a vital role in supporting the reactor design process and licensing our advanced reactor. This position provides a unique opportunity to work at the cutting edge of reactor safety analysis and licensing, and to contribute to the development of transformative nuclear technologies.

• Collaborate with team members to develop novel safety analysis methodologies.
• Develop, automate, and document standardized workflows towards improving consistency and efficiency of work done across the organization.
• Post-process, analyze and interpret calculation outputs to evaluate the consequences of postulated events to ensure adherence to regulatory limits.
• Prepare clear technical documentation of assumptions, inputs, methods, results, and conclusions to support internal design decisions and external licensing submittals.
• Other duties as assigned.

• Currently pursuing MS or PhD in Nuclear Engineering, Chemical Engineering or a related field. Completion of Bachelor’s degree in Nuclear Engineering, Chemical Engineering, or related field is required.

• Proficiency in developing simplified scoping models for complex systems
• Familiarity with Python or R for model development
• Familiarity with source term codes such as RADTRAD, MELCOR or MAAP
• Familiarity with the MOOSE framework and derived codes such as SAM
• Familiarity with LaTeX and/or Quarto for technical documentation
• Familiarity with version control tools such as Git
• Familiarity with containerized environments, e.g., Docker, and Github Actions
• Excellent analytical and problem‑solving skills
• Strong attention to detail
• Effective communication and collaboration abilities