Nuclear Methods Engineer- Bellevue, WA - RCS Corporation

Nuclear Methods Engineer- Bellevue, WA

Engineering - Nuclear

Job Type: Contract
Posted: 10/26/2022

Bellevue, Washington

RCS Corporation has an immediate need for a Nuclear Methods Engineer for our client in the Bellevue, WA areaThis is a 1-year contract opportunity with the potential of extension.

Who We Are

RCS Corporation is a certified Women-Owned Small Business (WOSB) specializing in the recruitment of professionals for best-of-class companies throughout the United States.  Since 1994, RCS recruits top talent for direct hire, temp-to-perm and contract staffing positions and provides customized payroll services. Our Recruiting Specialties consist of all Engineering Disciplines, Project Management, Project Controls, Information Technology, Energy Efficiency and Business Professionals.


Our Client is seeking to contract with a highly motivated Nuclear Methods Engineer. In this role, you will support the nuclear methods team.


  • Create formal documentation of sensitivity and uncertainty quantification studies applicable to the Natrium reactor. The areas of interest are in criticality, control rod worth, power distribution, and fast neutron fluence.
  • Utilize the existing Advanced Reactor Modeling Interface (ARMI) framework developed by TerraPower to build an automated suite of sensitivity studies.
  • Utilize the existing uncertainty quantification methods developed to assess sensitivities and uncertainties to key figures of merit.
  • Work within the nuclear methods team supporting the Natrium project on the development of applicable engineering and licensing media.

Key Qualifications and Skills

  • Advanced degree in Nuclear Engineering or equivalent and 4+ years of relevant experience preferred  
  • Experience in understanding and executing nuclear design/analysis methodologies, with a focus on radiation transport analyses using deterministic and/or stochastic simulation codes.
  • Excellent “under-the-hood” knowledge of the methods of reactor physics analysis (deterministic and stochastic particle transport, isotopic depletion, perturbation theory, nuclear data, kinetics, etc.) 
  • Experience with some nuclear engineering software such as DIF3D, MC2, PARTISN, MCNP, Serpent, SCALE, PARCS, APA, CASMO, DRAGON, ARMI, etc. preferred
  • Strong background in statistics is preferred.
  • Experience with hot channel factor development for evaluating thermal-hydraulics uncertainties is preferred.
  • Fast reactor physics and design intuition
  • Strong programming skills in any language required, preferably in scientific computing; bonus points for Python, C++, and Fortran skills 
  • Proven ability to integrate and automate simulation tools 
  • Demonstrable capabilities with fundamental software development tools (e.g. IDEs, version control, profilers, debuggers, documentation builders, packaging tools) 
  • Experience interacting on nuclear methodology with the NRC under an ASME NQA-1 compliant QA environment preferred 
  • Good working knowledge of general numerical methods and applied mathematics (e.g. PDEs, numerical stability, statistics, numerical analysis, dynamics) 
  • Strong formal technical documentation skills required 
  • Ability to consistently deliver to an aggressive schedule 
  • Ability to seek out tasks and produce value aligned with team goals without waiting for next assignment 
  • Passion for and dedication to software best practices 
  • Willingness to openly give and accept professional criticism through code reviews and other venues 
  • Strong verbal communication skills desired 
  • The successful candidate will possess a high degree of trust and integrity, communicate openly and display respect, and a desire to foster teamwork 

Job Functions
Job Functions are physical actions and/or working conditions associated with the position.  These functions may also constitute essential functions for the job which the employee must be able to fulfill, with or without accommodation.  Information provided below is to help describe the job so that the applicant has a reasonable understanding of the job duties/expectations.  An applicant's ability to perform and/or tolerate these actions and conditions will be discussed and workplace accommodations may be made on a case-by-case basis following an individualized assessment of the applicant and other considerations, including but not limited to any governing safety standards.

  • Motor Abilities: Sitting and/or standing for extended periods, bending/stooping, grasping/gripping, fine motor control (hands)
  • Physical exertion and/or requirements: Minimal, with ability to safely lift up to 25 pounds
  • Ability to work in a laboratory setting with fluctuating temperatures
  • Repetitive work: Prolonged
  • Special Senses: Visual and audio focused work
  • Work Conditions: Stairs, typing/keyboard, standard and/or sitting working environment of >8 hrs./day 
  • Travel required: 0-5%

RCS is an equal opportunity employer that prohibits discrimination and harassment of any type. RCS recruits, hires, and promotes for all positions without regard to race, color, religion, creed, national origin, citizenship status, disability, military status, veteran status, marital status, sexual orientation, gender identity, sex, genetic information or age. All terms and conditions of employment such as compensation, benefits, work assignment, availability of facilities and privileges of employment are administered on the same basis of equality.



RCS Corporation