JobsUSASenior Safety Verification and Validation Engineer
Company : System One Holdings, LLC
Location : Bellevue, WA
Posted Date : 15 September 2025
Job Type : Full Time
Category : Mechanical Engineering
Occupation : Validation Engineer
Job Details
Job Title: Senior Safety Verification and Validation Engineer
nLocation: Remote or Bellevue, WA, USA
nPosition Overview:
nWe are urgently looking for a talented and experienced Senior Safety Verification and Validation Engineer to join a dynamic team supporting the design and licensing of advanced nuclear reactor technology. This is an impactful role that requires deep technical expertise as well as a commitment to safety and innovation within the nuclear energy sector.
nKey Responsibilities:
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Lead the verification and validation (V&V) of safety analysis software and evaluation models critical to our licensing processes, specifically regarding Licensing Basis Events (LBEs) and Design Basis Accidents (DBA) without radionuclide release.
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Develop and implement comprehensive assessment bases, including benchmarks and relevant experimental tests, to ensure the rigor and accuracy of safety analyses.
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Identify and quantify uncertainties in experimental data and contribute to the development of benchmark models in alignment with NRC's Regulatory Guide 1.203.
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Coordinate and execute safety computer code V&V test programs, including Separate Effect Tests (SETs) and Integral Effect Tests (IETs), both internally and externally.
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Conduct system transient codes development and maintenance, performing reactor transient analyses, software commercial-grade dedication, and code adequacy evaluation.
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Collaborate with an interdisciplinary team of engineers to establish performance, safety, and quality requirements for core and reactor systems.
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Prepare detailed code benchmark documentation and support scaling analyses as necessary.
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Conduct engineering reviews and provide subject matter expertise for other projects within the Sodium Fast Reactor (SFR) Program.
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Qualifications and Skills:
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A Master's or Ph.D. in Nuclear Engineering or a related field, with a minimum of 5 years of relevant experience in the nuclear industry.
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Extensive experience in safety software verification and validation activities, particularly with nuclear safety analysis tools such as RELAP5-3D, TRACE, MELCOR, SAS4A/SASSYS-1, or SAM.
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Strong understanding of nuclear thermal-hydraulic fundamentals, reactor dynamics, and transient phenomena.
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Familiarity with EMDAP and NRC's Regulatory Guide 1.203 is required; experience with SFR safety methods is highly desirable.
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Proven skills in programming languages such as Fortran, C++, or Python.
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Demonstrated expertise in quantitative analysis, modeling, reporting, and working within quality assurance programs, specifically NQA-1 requirements.
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Ability to work effectively in multi-disciplinary teams, fostering open communication and collaboration.
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System One, and its subsidiaries including Joulé, ALTA IT Services, and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.
nSystem 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.
nRef: #161-Managed Staffing Charlotte
nSystem One, and its subsidiaries including Joulé, ALTA IT Services, CM Access, TPGS, and MOUNTAIN, LTD., are leaders in delivering workforce solutions and integrated services across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible full-time employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.
nSystem 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.
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