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.

Responsibilities

• 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.

Qualifications

• 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.

Knowledge, Skills & Abilities

• 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

• Ability to work with highly collaborative team

• 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

• General office environment

• Assessing the accuracy, neatness and thoroughness of the work assigned

• High-concentration, demanding and fast-paced

Environmental Conditions

• General office environment

• 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, etc.

#LI-Onsite

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