Modeling and Simulation, Core Design & Methods, and Nuclear Engineering Internship – 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 offering exciting opportunities for students to join various teams for Summer 2026. Internship experience will focus on building the tools, infrastructures, and analysis methods for the safety case of the Hermes Reactor and KP-X. Contributions from each team is instrumental to Kairos Power's mission on delivering an innovative technology that will impact climate change.

Areas with potential internship opportunities: 

• Core Design (Radiation Transport and Shielding Design, Radiation Detection, Reactor Physics (Neutronics and Thermal Hydraulics), and Fuel Cycle Analysis) 
• Thermal and Safety Methods - KP-SAM Code Development
• Fuel Performance - KP-BISON 
• Source Term Modeling Development
• Structural Materials Analysis
• Computational Fluid Dynamic (CFD) Methods and Analysis 
• Nuclear Critical/Safety Analysis
• Licensing Engineering
• Overall Analysis support such as Piping and Layout Analysis and Thermal Design and Rapid Technology Development Analysis 

General Responsibilities

• Contribute to the design, development, and testing of tools, infrastructures, and methods crucial for the safety and performance analysis of the Hermes Reactor and KP-X
• Perform data analysis and modeling tasks related to your focus area, such as radiation transport, thermal hydraulics, structural analysis, or computational fluid dynamics
• Assist in research projects, exploring innovative solutions to enhance reactor safety, performance, and efficiency
• Support validation of models through comparison with experimental or reference data to ensure accuracy and reliability
• Work closely with engineers, scientists, and other team members to solve complex engineering problems and achieve project milestones
• Document your work, prepare technical reports, and present findings to the team to support decision-making and knowledge transfer
• Adhere to all safety protocols and contribute to a culture of safety, ensuring that all work meets regulatory and company standards
• Other duties as assigned

Qualifications

• Current student enrolled and pursuing Bachelors, Masters, or PhD in Nuclear Engineering, Mechanical Engineering, Materials Science, Engineering Science, Chemical Engineering or related field 
• Demonstrated application of technical skills outside of classroom setting through laboratory, research, extracurricular projects, personal projects, or prior internship/work experience is highly preferred
• Proficiency in relevant technical areas, including data analysis, computational modeling, and engineering software. Familiarity with coding and simulation tools (e.g., Python, MATLAB, or specialized software) is a plus.
• Exposure to physics-based modeling (e.g., neutronics, thermal hydraulics, structural mechanics, CFD) through coursework or research.
• Proficiency in Microsoft Office application (Outlook, Excel, Word)
• Self-starter, critical thinking and problem-solving skills
• Proven team player with excellent verbal, written communication/presentation, and interpersonal skills
• Ability to work with highly collaborative team
• Ability to solve problems quickly and efficiently
• Prioritizes and ensures safety of oneself and others
• Ability to proactively collect, manage and transfer knowledge
• Ability to seek different and novel ways to create efficiencies when working on problems, challenges and issues

Physical Conditions

• Remaining in a stationary position, often standing, or sitting for prolonged periods
• Communicating with others to exchange information

Environmental Conditions

• General office environment
• Accessing the accuracy, neatness and thoroughness of the work assigned
• High-concentration, demanding and fast-paced

Safety and PPE 

• Reading and interpreting hazardous warning signs
• Reporting issues with equipment or unsafe conditions
• Wearing proper PPE, to include face mask, face shields, gloves, safety shoes

The hourly range for this position is $28-$32 for empl