Senior Nuclear Engineer Energy - Remote

slihrms; United States; Remote; USD 140,000 - 200,000; Full time

Job summary

slihrms is seeking a Senior Nuclear Engineer Energy - Remote. This role leads nuclear engineering activities for SMR-focused projects, coordinating safety analyses, licensing support, and regulatory compliance from a remote base near Oak Ridge, TN.

You will work across disciplines to ensure safe, compliant design and operation. Requires 7+ years in nuclear engineering, with a Bachelor's; Masters/PhD preferred.

Qualifications

• Requires a Bachelor's degree in Nuclear Engineering or closely related discipline.
• Masters or Ph.D. preferred for advanced roles.
• 7+ years of nuclear engineering experience required.

Responsibilities

• Lead and coordinate technical work supporting US nuclear safety licensing activities.
• Author, review, and approve nuclear safety analyses and evaluation reports.
• Develop and maintain nuclear safety and licensing strategies in line with ANSI/ANS-8 standards and NRC/DOE regulations.
• Apply validated neutronics methodologies and Monte Carlo codes to assess margins to criticality and shielding designs.

Skills

Neutronics

Nuclear Safety

Leadership

Regulatory Knowledge

Monte Carlo Codes

Education

Bachelor's degree in Nuclear Engineering

Master's or PhD preferred

Tools

MCNP

SCALE

Attila4MC

Serpent

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

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.