[Hiring] Senior Nuclear Engineer Energy @AtkinsRéalis

Role Description

We are seeking a Senior 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 7 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.
• 7 years of relevant experience with Bachelor's degree.
• Experience in nuclear industry preferred.
• Candidates holding a Master's degree, Ph.D., or a Professional Engineer (PE) license will be considered with 5 years' experience.

Requirements

• Technical Competencies:
• Advanced Reactor & SMR Design: Direct experience modeling or licensing Small Modular Reactors (SMRs) or advanced fuel systems (such as HALEU or TRISO fuel cycles).
• Software Quality Assurance (SQA): Experience managing code verification, validation, and benchmarking under a formal ASME NQA-1 or equivalent nuclear quality assurance program.
• Criticality Safety Analysis: Demonstrated experience authoring and approving Nuclear Criticality Safety Evaluations (NCSEs) and Analyses (NCSAs) for fuel processing, storage, or transport.
• Neutronics & Radiation Shielding: Proven ability to design radiation shielding and perform complex radiation-transport and core physics calculations.
• Nuclear Software Proficiency: Advanced, hands-on proficiency with core particle transport and criticality codes, specifically MCNP and SCALE/KENO (or equivalents like Attila4MC or Serpent).
• Regulatory Compliance: Comprehensive knowledge of US regulatory frameworks, including Nuclear Regulatory Commission (NRC) regulations (specifically 10 CFR Parts 50, 70, and 71) and ANSI/ANS-8 standards as well as Department of Energy (DOE) Orders, Guides, and Technical Standards and directives regarding nuclear facility safety bases.
• Leadership & Soft Skills:
• Technical Leadership: At least 7 years of engineering experience with a proven track record of reviewing, verifying, and formally approving the technical work of other engineers.
• Multidisciplinary Collaboration: Experience working within integrated, cross-functional engineering teams (e.g., interfacing with mechanical, thermal-hydraulic, or structural systems).
• Technical Writing: Communication skills, with documented experience authoring formal safety basis documents, calculation packages, or regulatory submittals.

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.
• Leaves of absences options.
• Flexible work options.
• Recognition and employee satisfaction programs.
• Employee assistance program.
• Voluntary benefits.