Systems Safety Engineering and Analysis

Job Description

Job Description Job Title: System Transients Analysis Engineer Location: Bellevue, WA Job Type: Contract Work Model: Hybrid/Onsite Preferred

Overview

System One is seeking a highly capable and motivated System Transients Analysis Engineer to support an advanced sodium-cooled reactor program. This role will focus on thermal hydraulic and transient analysis activities supporting advanced reactor system design, plant operations analysis, and control system integration.

The ideal candidate will have strong experience with system analysis codes such as RELAP5 or TRACE, along with a strong foundation in thermal hydraulics, heat transfer, fluid dynamics, and nuclear plant transient analysis.

Responsibilities

Develop RELAP5-3D models for steady-state and transient one-dimensional hydraulic network analyses

Perform reactor and plant transient analyses for normal operations, upset conditions, emergency events, and faulted scenarios

Develop plant-level control strategies and component-level controllers

Perform calculations using first principles of heat transfer, thermodynamics, and fluid dynamics to validate analytical results

Support evaluation of plant-wide transients, operational narratives, and design solutions

Perform multiscale and multidisciplinary thermal hydraulic analyses involving sodium, molten salt, and non-condensable fluids

Collaborate closely with safety, I&C, design engineering, and testing teams

Support development of new analytical methods and advanced modeling techniques

Prepare technical reports, calculations, and engineering documentation

Required Qualifications

Bachelor’s degree or higher in Nuclear Engineering, Mechanical Engineering, Electrical Engineering, or related discipline

Strong experience with thermal hydraulic system codes such as RELAP5 and/or TRACE

Strong analytical background in:

Thermal hydraulics

Fluid dynamics

Heat transfer

Transient analysis

One-dimensional hydraulic network modeling

Strong technical writing and communication skills

Ability to work effectively in a collaborative, fast-paced engineering environment

High level of professionalism, integrity, and teamwork

Preferred Qualifications

Experience with ASME component design and analysis

Experience modeling control systems and Instrumentation & Controls (I&C)

Experience supporting nuclear power plant design or operations

Experience developing new analytical methods

Advanced reactor or sodium-cooled reactor experience

Physical & Work Environment Requirements

Ability to sit and/or stand for extended periods

Minimal lifting requirements up to 25 pounds

Prolonged computer and keyboard work

Standard office or engineering work environment

Occasional travel up to 5%

Additional Information

This position may require compliance with U.S. export control regulations. Applicants may be asked to provide information regarding citizenship or work authorization status as part of the hiring process.

Ref: #161-Managed Staffing Charlotte