Senior Nuclear Engineer Energy - Remote

AtkinsRéalis Group; Oak Ridge (TN); Hybrid; USD 90.000 - 150.000; Vollzeit

Benefits dieser Stelle

Medical benefits

Dental benefits

Vision benefits

Life insurance

Disability benefits

401(k) with 100% vesting

Employee stock purchase plan

Paid Time Off

Flexible work options

Zusammenfassung

AtkinsRéalis seeks a Senior Nuclear Engineer Energy for a remote-based role rooted in Oak Ridge, TN. You will lead nuclear safety analyses, licensing strategies, and cross-disciplinary coordination to ensure regulatory compliance and safe operation of SMR-related projects.

Ideal candidates have 7+ years in nuclear engineering, with strong expertise in MCNP/SCALE/Serpent and a proven track record in safety basis documentation and regulatory submissions.

Qualifikationen

• Minimum 7 years of nuclear engineering experience with a bachelor's degree.
• Experience leading technical work for US nuclear safety licensing.
• Experience with SMR designs and regulatory frameworks.

Aufgaben

• Lead and coordinate nuclear safety licensing activities.
• Author, review, and approve safety analyses and reports.
• Support licensing by preparing safety basis documents.
• Lead NCSEs and NCSAs for fuel handling, storage, and transport.
• Develop shielding designs and conduct radiation-transport analyses.

Kenntnisse

Senior engineer leadership

SMR knowledge

Nuclear safety analysis

Neutron & reactor physics

Criticality safety

Neutronics & shielding

Regulatory compliance

Technical leadership

Cross-functional collaboration

Technical writing

Ausbildung

Bachelor’s in Nuclear Engineering

Master’s or PhD preferred

PE license considered with 5 years

Tools

MCNP

SCALE

Attila4MC

Serpent

Jobbeschreibung

### **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:*** **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. ## **Rewards & benefits**At AtkinsRéalis, our values—Safety, Integrity, Collaboration, Innovation, and Excellence—are more than just words. They are the foundation of who we are and how we work. These principles shape our culture, guide our decisions, and inspire us to create an environment where every team member feels empowered to grow, succeed, and make a meaningful impact.Depending on your employment status, AtkinsRéalis benefits may include 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, and voluntary benefits. You can review our comprehensive benefits page here. ## **About AtkinsRéalis**We're AtkinsRéalis, a world-class engineering services and nuclear organization. We connect people, data and technology to transform the world's infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants, designers, engineers and project managers, we can change the world. We're committed to leading our clients across our various end markets to engineer a better future for our planet and its people.Find out more.## ## **Additional information****Expected compensation range is between $90,000 - $150,000 annually depending on skills, experience, and geographical location.****Are you ready to expand your career with us? Apply today and help us shape something extraordinary.**