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Senior Nuclear Engineer Energy - Remote

Remote / Online - Candidates ideally in
Oak Ridge, Anderson County, Tennessee, 37830, USA
Listing for: AtkinsRéalis Group
Full Time, Remote/Work from Home position
Listed on 2026-10-15
Job specializations:
  • Engineering
    Safety Engineer, Regulatory Compliance Specialist
Salary/Wage Range or Industry Benchmark: 90000 - 150000 USD Yearly USD 90000.00 150000.00 YEAR
Job Description & How to Apply Below
###
** Job Description**##
** Overview
* * We are seeking
** a Senior Nuclear Engineer Energy – Remote.  This remote position is based out of our Oak Ridge, TN office.**##
** Your role
*** 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, this position requires 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.  
** Key Responsibilities
**** Specific responsibilities may require the candidate to:**
* ** Nuclear Safety & Licensing Strategy.**
* ** 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.  
** Criticality Safety & Advanced Reactor Systems:**
* ** 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 (mass, moderation, geometry, reflection, enrichment, and interaction) 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.
** Neutronics, Shielding & Software Quality Assurance (SQA):**
* ** Apply validated neutronics methodologies
** and Monte Carlo codes (e.g.,
** MCNP, SCALE/KENO**) 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.
* Performs other duties as assigned.## ##
** About you
*** Requires a Bachelor’s degree in Nuclear Engineering or a closely related discipline. Master’s or Ph.D. preferred.
* Requires 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.
** Desired

Skills:

*…
Position Requirements
10+ Years work experience
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