Senior Safety Analysis Methods Engineer

Bee Talent Solutions; United States; On-site; USD 110,000 - 170,000; Part time

Benefits offered by this job

Medical coverage

Dental coverage

Vision coverage

Job summary

Bee Talent Solutions seeks a Contractor Senior Engineer to support the design and licensing of the Natrium Demonstration reactor, focusing on developing methods for Licensing Basis Event analyses and advancing system-level thermal-hydraulic modelling.

You will contribute to the SFR program, perform transient analyses, code benchmarking, verification and validation, and help integrate models with design and safety analyses while maintaining NQA1 quality practices.

Qualifications

• 3+ years of experience in system-level thermal hydraulic modeling and method development for nuclear or complex energy systems.
• Experience developing or improving analysis methods, including numerical scheme development and stability/accuracy optimization.
• Familiarity with NQA 1 quality assurance for modeling workflows and traceability.

Responsibilities

• Develop system-level thermal hydraulic analysis methods, including modeling strategies and closure models.
• Perform steady-state and transient system analyses to characterize model behavior and define fidelity requirements.
• Support method qualification, verification, and applicability envelopes.
• Document methodologies, assumptions, and numerical performance for licensing support.
• Work across disciplines to integrate thermal hydraulic methods with plant design and safety analyses.

Skills

Thermal-hydraulic modeling

System-level analysis

Numerical methods

Python/MATLAB scripting

Technical communication

Education

B.S. in Mechanical/Nuclear/Chemical Engineering

Tools

RELAP5 3D

GOTHIC

SAS

Job description

Our client is seeking a Contractor to be part of a growing team supporting the design and licensing of the Natrium Demonstration reactor and is primarily responsible for developing methods to perform Licensing Basis Events (LBE) analyses.

The Senior Engineer may also contribute subject matter expertise to other projects under development by the client's Sodium Fast Reactor (SFR) Program. Other engineering activities include, but are not limited to, system transient codes development and maintenance, performing reactor transient analyses, code benchmark with Integral Effect Tests (IETs) or Separate Effect Tests (SETs), scaling analysis, software commercial-grade dedication, contributing to code assessment and adequacy evaluation, as well as performing verification and validation activities.

Tasks:

• Develop system-level thermal hydraulic analysis methods, including modeling strategies, numerical approaches, and closure models.
• Perform steady-state and transient system-level analyses to characterize model behavior, assess method performance, and define method fidelity requirements.
• Support method qualification, including numerical verification, applicability envelopes, and performance characterization.
• Formulate and integrate closure models and empirical correlations (e.g., heat transfer, pressure drop, mixing, component-level physics) into existing analysis frameworks.
• Identify modeling gaps and support method enhancement using and sensitivity studies.
• Develop automated workflows and tools for model setup, execution, post processing, and repeatable method application.
• Document modeling methodologies, assumptions, method applicability, and numerical performance for design processes and licensing support activities.
• Work across disciplines to ensure thermal hydraulic methods integrate effectively with plant design, safety analysis, and coupled simulation workflows.
• Apply and improve client's SQA and NQA 1 modeling practices, ensuring traceability, configuration control, and reproducibility of methods.

Key Qualifications and Skills:

• Degree in Mechanical, Nuclear, Chemical Engineering, or similar fields, with 3+ years of experience in system-level thermal hydraulic modeling and method development for nuclear or complex energy systems.
• Demonstrated experience in developing or improving analysis methods, including numerical scheme development, closure model formulation, and stability/accuracy optimization strategies.
• Experience performing system-level thermal hydraulic analyses using tools such as RELAP5 3D, GOTHIC, SAS, or equivalent, with the ability to extend or tailor modeling approaches within these frameworks.
• Strong foundation in thermal fluids and reactor system behavior, including complex thermal hydraulic phenomena relevant to advanced reactor designs.
• Experience in sensitivity analyses and model gap identification that support method development priorities.
• Familiarity with scientific programming and workflow automation (e.g., Python, MATLAB).
• Familiarity with NQA 1 quality assurance for modeling workflows, including documented methodologies, configuration control, and model traceability.
• Strong analytical thinking, clear technical communication, and the ability to support multiple method development efforts in parallel.
• The service provider will possess a high degree of trust and integrity, communicate openly and display respect, and a desire to foster teamwork.

Benefits:

Bee Talent Solutions offers a competitive benefits package for eligible full-time employees, including medical, dental, and vision coverage. Additional details regarding eligibility and plan offerings will be provided during the interview and onboarding process.

Pre-Employment Screening:

As a condition of employment, all applicants must successfully complete a pre-employment drug screening.