[Hiring] Intermediate Nuclear Engineer Energy @AtkinsRéalis

Role Description

We are seeking an Intermediate Nuclear Engineer Energy – Remote. This remote position is based out of our Oak Ridge, TN office.

This role requires a senior level engineer with a minimum of 3 years of nuclear engineering experience, responsible for leading and supporting the execution, oversight, and coordination of nuclear engineering activities.

• Ensures technical deliverables, design interfaces, and nuclear safety information flow efficiently across engineering disciplines, project functions, and potentially external vendor interfaces.
• Operates within a multidisciplinary team, requiring deep expertise in Small Modular Reactor (SMR) designs.

Integrates specialized functions across multiple engineering disciplines, utilizing knowledge gained in the following core competencies:

• Neutron & Reactor Core Physics: Analyzing core behavior and reactor physics.
• Nuclear Safety & Analysis: Leading nuclear safety-related analyses and nuclear criticality safety assessments.
• Design & Shielding: Developing radiation shielding designs and managing fuel cycle operations.
• Logistics & Compliance: Overseeing radioactive material transportation and enforcing software quality assurance (SQA) standards.
• Software: Proficient with Attila4MC, MCNP, SCALE, and/or Serpent codes and modules.
• Regulatory Expertise: Comprehensive knowledge of US and international nuclear regulatory frameworks, including NRC regulations (e.g., 10 CFR Parts 50, 70, or 71), DOE orders, and IAEA safety standards and guides.

Qualifications

• Bachelor’s degree in Nuclear Engineering or a closely related discipline; Master’s or Ph.D. preferred.
• 3 years of relevant experience with Bachelor's degree.
• Experience in nuclear industry preferred.

Requirements

• Lead and coordinate technical work supporting US nuclear safety licensing activities.
• Author, review, and approve technical documentation, including various nuclear safety analyses and evaluation reports.
• Support licensing initiatives by assisting with the preparation of safety basis documents.
• Participate actively in hazard analyses, process design reviews, and configuration management activities.
• Lead, execute, and approve Nuclear Criticality Safety Evaluations (NCSEs) and Nuclear Criticality Safety Analyses (NCSAs) for fuel fabrication, handling, storage, and transportation processes.
• Establish and validate criticality safety limits and engineered/administrative controls specifically for small modular reactor systems.
• Advance the development and maintenance of the Criticality Safety Program in strict alignment with ANSI/ANS-8 standards and applicable NRC/DOE regulations.
• Apply validated neutronics methodologies and Monte Carlo codes to develop or assess margins to criticality, bias, and uncertainty.
• Lead, perform, and approve radiation shielding designs and radiation-transport analyses for fuel fabrication, handling, storage, and transportation.
• Analyze and interpret radiation data to ensure operational safety, shielding effectiveness, and total regulatory compliance.
• Perform other duties as assigned.

Benefits

• Medical, dental, vision, company-paid life and short- and long-term disability benefits.
• Employer-matched 401(k) with 100% vesting.
• Employee stock purchase plan.
• Paid Time Off and leaves of absences options.
• Flexible work options.
• Recognition and employee satisfaction programs.
• Employee assistance program and voluntary benefits.