Senior Safety Verification and Validation Engineer
Bellevue, Washington
Experience: 10
Category: Engineering
Contractor Work Model: Remote
Brand: System One
Compensation Range: 72.00 - 90.00 Per Hour
Job ID: 346239
Date Posted: 03/09/2026
Shortcut: http://jobs.systemone.com/dwBdf8
Job Title: Senior Safety Verification and Validation Engineer
Type: Contract (12-months)
Contractor Work Model: Remote
About the Role:
As a Senior Safety V&V Engineer, you will be instrumental in verifying and validating safety assessment models and software integral to reactor safety analysis and licensing. You will work on developing and assessing benchmark models, ensuring compliance with NRC guidance (RG 1.203), and supporting safety methodology development for next-generation nuclear systems, including Sodium Fast Reactors (SFR).
Key Responsibilities:
- Develop and maintain assessment bases, including benchmarks and applicable tests, to support safety evaluations.
- Identify uncertainties within experimental data and develop robust benchmark models.
- Assess evaluation models (EM) using NRC’s RG 1.203 guidance, ensuring safety standards are met.
- Coordinate and execute safety code verification and validation activities, including simulations, Benchmarking with Integral Effect Tests (IETs), and Separate Effect Tests (SETs).
- Support scaling analyses, code applicability determinations, and software commercial-grade dedication.
- Contribute to the development of analytical and computational models, integrating them into transient analysis codes in collaboration with safety analysis teams.
- Review engineering analyses and contribute to safety assessments for licensing documentation.
- Collaborate with interdisciplinary teams to establish safety, performance, and quality requirements for core and reactor systems.
- Support code development, maintenance, and performance evaluation for system transient codes and safety analyses
- Extensive experience with nuclear safety software verification, validation, and system transient analysis codes (RELAP5-3D, TRACE, MELCOR, SAS4A/SASSYS-1, SAM, or similar).
- Strong understanding of nuclear thermal-hydraulic fundamentals, reactor dynamics, and transient phenomena.
- Proven expertise with safety analysis methodologies, including experience with NRC RG 1.203.
- Familiarity with EMDAP and regulatory requirements specific to nuclear safety.
- Knowledge of SFR safety methods and experience with other reactor types such as LWRs is highly desirable.
- Proficiency in programming languages such as Fortran, C++, or Python is a strong plus.
- Advanced degree in nuclear engineering or related field, with at least 5 years of relevant experience.
- Demonstrated strong analytical, modeling, and report-writing abilities.
- Experience working within NQA-1 quality assurance programs and multidisciplinary engineering teams.
- Exceptional communication skills, high integrity, and a collaborative mindset.
System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.
Ref: #161-Managed Staffing Charlotte
-
Senior Safety Methods Engineer
Bellevue, WA
Job Title: Senior Safety Methods Engineer Location: Bellevue, WA Type: Contract (yearlong) typically extends on a yearly basis Compensation: $69 - $115 hourly Contractor Work Model: Fully Remote Paid holidays and PTO System One is seeking a Senior Safe...
Date Posted: 04/28/2026 Recommended
-
Senior Nuclear Safety Analysis Engineer
Bellevue, WA
Job Title: Senior Nuclear Safety Analysis Engineer Location: Bellevue, WA Type: Contract (yearlong) typically extends on a yearly basis Compensation: $69-$115 hourly Contractor Work Model: Fully Remote Paid Holidays | PTO System One is seeking to contr...
Date Posted: 04/28/2026 Recommended
-
System Design Engineer
Bellevue, WA
Position Summary System One is seeking a System Design Engineer to support advanced nuclear reactor projects. This role focuses on system design, analysis, and supplier oversight, supporting complex fluid systems within a highly regulated environment. ...
Date Posted: 04/21/2026 Recommended
-
System Design Engineer
Bellevue, WA
Job Title: System Design Engineer Location: Bellevue, WA Type: Contract Contractor Work Model: Remote – offsite Hours: 40.0 Security Clearance: Not specified Overview Responsibilities Design nuclear and industrial process systems and sub-systems from c...
Date Posted: 04/21/2026 Recommended
-
Plant Integrated Analysis Engineer
Bellevue, WA
Overview: System One is seeking a highly capable and motivated Plant Integrated Analysis Engineer to support advanced nuclear reactor development within a sodium-cooled reactor program. This role focuses on plant-level thermal-hydraulic and control sys...
Date Posted: 04/13/2026 Recommended
-
Senior Civil Structural Engineer
Downers Grove, IL
Job Title: Senior Structural Engineer Location: Downers Grove, IL Type: Contract Compensation: $70/hr (DOE) Contractor Work Model: Onsite Hours: 40 hours/week System One is e are seeking a high-caliber Experienced Structural Engineer to join our Projec...
Date Posted: 04/23/2026 Recommended
-
Nuclear Engineer V, Electrical
perry, Ohio
Job Title: Nuclear Engineer V – Electrical Location: Perry Plant – Perry, OH Davis-Besse Plant – Oak Harbor, OH Beaver Valley Plant – Hookstown, PA Position Type: Contract (12 Months) Schedule: Monday–Friday | 8:00 AM – 5:00 PM Pay Rate: $115/hr (DOE) ...
Date Posted: 03/18/2026 Recommended
-
Senior Engineer
Bellevue, Washington
System One is seeking an experienced Senior Mechanical Engineer to support the design and development of reactor structures and components for a next-generation Generation IV advanced nuclear reactor program. This role is focused on high-integrity nucl...
Date Posted: 04/21/2026 Recommended
-
Senior Project Engineer
Cambridge, Massachusetts
Job Title: Senior Project Engineer Location: Cambridge, Massachusetts Type: Direct Hire Compensation: $160000 - $210000 annually Contractor Work Model: Hybrid System One is currently seeking a Senior Project Engineer on a direct hire position located i...
Date Posted: 02/03/2026 Recommended
-
EPC Project Controls Manager
Wheatfield, IN
Job Title: EPC Project Controls Manager Location: Hire will start from the Downers Grove, IL office and relocate to Wheatfield, IN once project mobilizes in August 2026. Type: Contract to Direct Hire (possible) Compensation: $TBD (exempt) Contractor Wo...
Date Posted: 02/27/2026 Recommended
-
Test & Commissioning Site Supervisor
Bellevue, Washington
Job Title: Test & Commissioning Site Supervisor Location: Bellevue, Washington Type: Direct Hire Compensation: $90,000 - $120,000 Contractor Work Model: Onsite – onsite Hours: 40.0 Overview Lead and coordinate the commissioning and validation activitie...
Date Posted: 04/23/2026 Recommended
-
Sr Structural Designer
Cannonsburg, PA
Job Title: Civil / Structural Senior Designer Position Overview We are seeking an experienced Civil / Structural Senior Designer to join our engineering team. This role involves leading complex design and drafting projects, creating detailed 2D and 3D ...
Date Posted: 04/24/2026 Recommended
-
Lead Capital Cost Estimator (Multi-Trade)
Greentree, PA
Lead Senior Capital Cost Estimator (Multi-Trade) Greentree, PA Responsibilities Oversee and consolidate multi-discipline estimates for large-scale capital projects in Food & Beverage, advanced manufacturing, and heavy industrial sectors. Lead the devel...
Date Posted: 04/28/2026 Recommended
-
Senior Engineer - Structural
Fort Worth, TX
Job Title: Senior Engineer - Structural Location: Fort Worth, TX Type: Direct Hire Compensation: $120,000.00 Work Model: Hybrid – onsite and remote Hours: 40.0 Requirements Bachelor of Science in Civil or Structural Engineering. Active Professional Eng...
Date Posted: 04/17/2026 Recommended
-
Project Engineer - Industrial/Structural
Richland, Washington
Job Title: Project Engineer - Industrial/Structural Location: Richland, Washington Type: Contract To Hire Compensation: $55.00 - 75.00 hourly Contractor Work Model: Onsite Hours: Mon-Fri 8am-5pm Project Engineer - Industrial/Structural In a world of po...
Date Posted: 03/26/2026 Recommended
-
Product Manager
Wilmington, OH
Job Title: Product Manager - ERS Location: Wilmington, OH Compensation: $70,000.00 - $85,000.00 Contractor Work Model: On-site Hours: 40.0 hours/week Overview Responsibilities • Plan, direct, and manage the Ideation marketing activities for the Emergen...
Date Posted: 04/13/2026 Recommended
-
Quality Assurance Engineer
Chattanooga, TN
Job Title: Quality Assurance Engineer Location: Chattanooga, TN Type: Direct Hire Work Model: Onsite Responsibilities: Support the implementation and execution of quality assurance program across nuclear, DoE, DoD, and aerospace projects. Review custom...
Date Posted: 04/06/2026 Recommended
-
Mechanical Engineer
Wheatland, Pennsylvania
Job Title: Mechanical Engineer Location: Wheatland, PA Type: Direct Hire Contractor Work Model: Onsite Objective Develop and maintain BOMs, production layouts, and product specifications while driving process improvements, cost reductions, and product ...
Date Posted: 02/25/2026 Recommended
-
Electrical - Project Engineer
Raleigh, North Carolina
Electrical Project Engineer ? Raleigh, NC | Full-Time | Hybrid Work Schedule Available Are you a skilled Electrical Engineer looking for an opportunity to lead complex building system projects and make a lasting impact? Join a collaborative, employee-o...
Date Posted: 02/09/2026 Recommended
-
Structural Professional Engineer
Nashville, Tennessee
Structural Professional Engineer System One is partnering with an architectural firm seeking a Structural Professional Engineer in the Nashville, Tennessee area. Responsibilities include: Manage the full project lifecycle from initial conceptual design...
Date Posted: 04/03/2026 Recommended
-
I&C Engineer
Idaho Falls, ID
Job Title: I&C Engineer Location: Idaho Falls, ID Type: Contract Contractor Work Model: Onsite Hours: 40.0 Responsibilities Design, develop, install, and maintain equipment required to monitor and control engineering systems in nuclear facilities. Appl...
Date Posted: 04/29/2026 Recommended
-
Structural Intern Engineer
Kansas City, Missouri
Structural Intern Engineer System One is partnering with an architectural firm seeking a Structural Intern Engineer in the Kansas City, Missouri area. Responsibilities include: Perform structural analysis for wood, steel, masonry, and reinforced concre...
Date Posted: 04/03/2026 Recommended
-
Structural Designer or Drafter
Cannonsburg, PA
Job Title Civil / Structural Designer / Drafter (Junior, Mid-Level, Senior, Lead) Position Overview We are seeking Civil / Structural Designers and Drafters at multiple experience levels to join our growing engineering team. These roles support a wide ...
Date Posted: 03/18/2026 Recommended
-
Welding Engineer
Katy, Texas
Job Title: Welding Engineer Location: Katy, Texas Type: Contract To Hire Compensation: $50.00 - $85.00 Contractor Work Model: Onsite – onsite Hours: 40.0 Overview: We are seeking a degreed Welding Engineer who will play a critical role in both welding ...
Date Posted: 04/29/2026 Recommended
-
Avionics Inspector - Quality
Owasso, OK
System One is working with a client to find an Avionics Inspector- Quality. Responsibilities Perform incoming, in-process, and final inspections on avionics components and instruments to ensure compliance with approved data, technical manuals, drawings...
Date Posted: 04/17/2026 Recommended
-
Mechanical Engineer
Glenshaw, Pennsylvania
Job Title: Mechanical Engineer Location: Glenshaw, PA Type: Direct Hire Compensation: 100-120K Contractor Work Model: On site Objective Execute mechanical engineering assignments involving specifications, calculations, reports, and project studies for ...
Date Posted: 02/18/2026 Recommended
-
Senior Nuclear Mechanical Structural Analysis Engineer
Cranberry, PA
Job Description: Senior Nuclear Mechanical / Structural Analysis Engineer (Reactor Internals) Position Summary The Senior Nuclear Mechanical/Structural Analysis Engineer is responsible for performing advanced structural, thermal, and seismic analyses i...
Date Posted: 04/21/2026 Recommended
-
Category Manager
San Antonio, TX
Job Title: Category Manager San Antonio, TX Contract to hire possible Work Schedule: Monday - Friday: 7:00am - 4:00pm or 8:00am - 5:00pm The Category Manager will establish and execute third party category management strategies to achieve best value in...
Date Posted: 04/24/2026 Recommended
-
Senior Designers (Vapor Controls)
Tulsa, Oklahoma
Senior Designer (Vapor Controls) Responsibilities Design and draft packaged, skid-mounted vapor control equipment using Plant 3D (Plant Pro) and Autodesk Inventor Collaborate with cross-functional project teams to develop accurate and efficient control...
Date Posted: 04/07/2026 Recommended
-
Civil Field Engineer
Burlington, MA
Job Title: Field Engineer 2 Civil Location: Burlington, MA Type: Contract Compensation: Contractor Work Model: Onsite – onsite Hours: 40.0 Responsibilities Serve as Resident Field Engineer for sewer rehabilitation projects, providing technical support,...
Date Posted: 04/29/2026 Recommended