Nuclear Engineer - Reactor Physics

NANO Nuclear Energy Inc. (NASDAQ: NNE); Oak Brook (IL); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Competitive compensation

Benefits package

Mentorship and professional growth

Job summary

NANO Nuclear Energy is developing next‑generation microreactor systems and advancing HTGR technologies for critical infrastructure and data centers. We seek a Nuclear Engineer, Reactor Physics to support core design, licensing, and regulatory compliance.

You will perform reactor physics analyses, develop computational tools, and collaborate with cross‑functional teams while mentoring junior staff. Experience in Monte Carlo methods and Python is valued.

Qualifications

• Bachelor's degree in Nuclear Engineering or related field is required.
• 7+ years (or MSc with 5+ years) of relevant experience.
• Strong Monte Carlo and reactor physics knowledge; shielding and safety experience desired.
• Programming skills in any language; Python is commonly used here.

Responsibilities

• Perform neutron/gamma transport calculations to determine activation/dose, heating, and shielding needs.
• Design radiation shielding throughout the reactor system.
• Perform criticality safety calculations.
• Develop/validate tools for reactor multiphysics analysis.
• Collaborate with engineering, safety, licensing teams, and operations.

Skills

Monte Carlo methods

Reactor physics

Reactor design

Radiation shielding

Criticality safety

Python

Problem-solving

Collaboration

Nuclear software verification

Education

Bachelor's degree in Nuclear Engineering or related field

Tools

Python

Job description

NANO Nuclear Energy is anadvanced nuclear technology company developing next-generation microreactorsystems that will help transform the future of clean, reliable, and resilientenergy. Through the development of its KRONOS MMR™ EnergySystem, LOKI MMR™ Energy System, and ZEUS™ Solid Core BatteryReactor —advancedhigh-temperature gas-cooled reactor (HTGR) technologies designed forapplications including data centers, industrial operations, remote communities,and critical infrastructure—the company is advancing innovative nuclearsolutions for a rapidly evolving energy landscape. NANO Nuclear has also submitted a Construction Permit Application (CPA) to the U.S. NuclearRegulatory Commission (NRC) to support the planned deployment of the KRONOS MMRat the University of Illinois Urbana-Champaign (UIUC) , representing a significantmilestone toward the commercialization of advanced nuclear technology.

Joining NANO Nuclear meanscontributing to pioneering technologies with the potential to redefine thenuclear industry while working alongside experts in engineering, science, andinnovation. Our team operates in a collaborative, entrepreneurial environmentwhere employees are encouraged to solve challenging technical problems andadvance the materials technologies needed for next-generation energy systems.

Position Overview:

We are seeking a Nuclear Engineer, Reactor Physics who will be responsible for performing reactor physics analyses of the nuclear reactor power systems in development at Nano Nuclear Energy, Inc. The Nuclear Engineer will support core design enhancement, integrate customer and regulatory requirements into the reactor core design, and perform analysis and prepare documentation to support licensing of the reactor systems.

Responsibilities:

• Perform neutron and gamma radiation transport calculations to determine activation/dose rates, heating, and material damage effects, and establish radiation shielding requirements.
• Design radiation shielding throughout the reactor system.
• Perform criticality safety calculations.
• Develop, verify, and validate computational tools for reactor multiphysics analysis.
• Collaborate with engineering, operations & maintenance, safety analysis, and licensing teams.
• Assist in training and mentoring junior team members.
• Ensure compliance with nuclear regulations, licensing requirements, and company safety policies.
• Contribute to the preparation of documents to enable licensing of Nano Nuclear Energy reactor systems.
• Responsibilities may extend to other divisions of the business at times.
• Bachelor’s degree in Nuclear Engineering or related field.
• 7+ years (or M.Sc. and 5+ years) of relevant experience.
• Strong Monte Carlo skills and strong understanding of reactor physics. Experience in reactor design, radiation shielding, and criticality safety desirable.
• Strong programming skills in any language; Python is commonly used in this position.
• Excellent problem-solving and collaboration skills.
• Nuclear software verification and validation experience is a plus.

Qualifications:

• Bachelor’s degree in Nuclear Engineering or related field.
• 7+ years (or M.Sc. and 5+ years) of relevant experience.
• Strong Monte Carlo skills and strong understanding of reactor physics. Experience in reactor design, radiation shielding, and criticality safety desirable.
• Strong programming skills in any language; Python is commonly used in this position.
• Excellent problem-solving and collaboration skills.
• Nuclear software verification and validation experience is a plus.

What We Offer

• The opportunity to develop materials solutions for next-generation nuclear technology.
• Exposure to advanced materials challenges in high-temperature and nuclear environments.
• A collaborative engineering culture focused on innovation and technical excellence.
• Opportunities for mentorship, professional growth, and technical leadership.
• Competitive compensation and benefits package.
• The opportunity to contribute to a cleaner, more reliable energy future.

Salary range and levels for this role:

• Level III: Typically, five years of experience in an engineering role required.
• Level IV: Typically, ten years of experience in an engineering role required.
• Level V: Typically, fifteen years of experience in an engineering role required.
• Level VI: Typically, twenty years of experience in an engineering role required.

This job description is intended to provide a general overview of the role and may encompass responsibilities across multiple functions or levels within the organization. The scope of the position, title, responsibilities and compensation will be determined based on the specific needs of the business, as well as the candidate's experience, qualifications and level of expertise. The salary range provided, where applicable, is intentionally broad is not indicative of a single level or final compensation offer. Actual compensation will be determined based on relevant experience, skills, qualifications, internal equity and other applicable factors.

Equal Opportunity Statement

NANO Nuclear Energy is an equal opportunity employer committed to fostering a diverse and inclusive workplace. We encourage individuals with diverse backgrounds, experiences, and perspectives to apply.