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 commercial fleet. 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 employees working onsite at our Alameda, CA headquarters. The range provided in this job posting represents the typical range or starting rate of candidates hired in California. Factors that may be used to determine your actual salary may include your education, experience, knowledge, skills, abilities, the market data for your work location, and a comparison to other employees already in the role.

About Our Benefits

We know that we have some of the most talented and dedicated employees, and we believe in rewarding them accordingly. If you work here, full-time employees (excludes interns) expect to have access to the benefits below:

- 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)

Kairos Power is committed to building a diverse workforce that reflects the communities where we do business. Kairos Power is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. We actively welcome people of different experiences, abilities, and perspectives.

Kairos Power participates in E-Verify.

Candidates only, no recruiters or agencies please.

Note: You are applying for a position that is located in a facility that handles information that is subject to export control restrictions by the Department of Energy under 10 CFR Part 810. To work in this facility, you need to be authorized by the Department of Energy to access Part 810-controlled information. Foreign nationals who are citizens of countries that are not on the Department of Energy’s general authorization list (link below) are not permitted to work in our facility unless the Department of Energy issues an export control license to the company to permit that individual to have access to Part 810-controlled information. The following questions are intended to determine the licensing requirements that may apply. https://www.law.cornell.edu/cfr/text/10/appendix-A_to_part_810