Nuclear Engineer III, Nuclear Safety Analysis

Deep Fission is a nuclear technology company pioneering the development of a revolutionary deep borehole pressurized water reactor. We recently completed a private placement financing and Alternative Public Offering and are now operating as a public company while maintaining our startup agility and innovation focus. With strategic partnerships in place, strong private and public investment, and active engagement with the U.S. Nuclear Regulatory Commission (NRC), we are executing our next phase of growth as we advance our groundbreaking nuclear technology toward commercial deployment. 

Job Summary:

This position is a nuclear engineer who supports the design, development, and safety analysis of nuclear reactors.  Functions within this role include performing calculations and analyses to support nuclear and radiological safety, shielding design, reactivity and criticality control, and core design.

Key Responsibilities:

• Execute design, analysis, or evaluation activities using sound engineering principles and adhering to business standards, practices, procedures, and product / program / project requirements.


• Possess working level knowledge of, or technical experience in one or more of the following areas:


• Influence and support the development of strategy, methodology and technical tools for the area of responsibility.


• Interpret internal and external business challenges and recommend best practices to improve products, processes, tools, or services.


• Use judgement to support decision making and the handling of complex tasks or problems in areas of operations, product management, technology, or engineering.


• Work within a multidisciplinary engineering team.


• Perform work in accordance with design control procedures, ensuring thorough documentation of work, facilitation of internal and external design reviews, and control of product design configuration data.

Required Skills & Experience

• 3-5 years of experience in the relevant engineering discipline, including successful delivery of Mechanical Handling designs. 


• Background in regulated environments such as nuclear, aerospace, defense, or industrial capital projects. 


• Bachelor’s degree in Nuclear Engineering or related technical discipline. 


• Ability to maintain communication and stakeholder engagement in a virtual and hybrid team environment. 


• Ability to travel - Candidate will be required to travel on approximately 10% of the year and depending on the project phase. 


• Must be a U.S. person eligible to meet DOE Export Control requirements under 10 CFR 810 

Desired Skills & Experience: 

• Experience with Nuclear Safety Analysis codes and methods (e.g., MELCOR, RADTRAD, SAPHIRE, SCALE, ORIGEN)


• Experience with NQA-1 in a nuclear environment


• Proficiency with engineering software tools and AI-enabled platforms. 


• Experience in startup or innovation-driven organizations.

Our Commitment: 

Deep Fission is an equal opportunity employer committed to building a diverse and inclusive workplace. We welcome applicants from all backgrounds who share our passion for advancing clean nuclear energy and creating a sustainable future. We do not discriminate on the basis of race, color, creed, religion, ancestry, age, sex, marital status, national origin, disability, veteran status, or any other characteristic protected by applicable law.