System One is seeking a highly motivated Nuclear Methods Engineer for a year-long contract position based in Bellevue, WA. Local candidates only. In this role, you will support the nuclear methods team by creating and documenting software requirements, designs, implementation, and testing for reactor licensing. You will play a critical role in enhancing and validating nuclear simulation models , and work to ensure compliance with licensing requirements for our client's reactors.
Responsibilities:
Create formal documentation of nuclear methods software requirements , design, implementation, and testing in support of reactor licensing .
Update, improve, and create software to meet licensing requirements during the Validation and Verification (V&V) process.
Incorporate third-party programs into the simulation ecosystem as necessary to support licensing.
Design and execute sensitivity studies to assess the impact and validity of various modeling assumptions (e.g., meshing, physics coupling, transport options, cross-section preparation, fission product models, spatial kinetics) , adjusting methods as required.
Train and support reactor designers and developers in the use of design software tools.
Build and apply methods to assess the propagation of uncertainty and its effect on safety margins.
Enhance the engineering team’s ability to build models and draw meaningful conclusions from simulation outputs through input tools, visualization, reports, etc.
Key Qualifications and Skills:
PhD and 3+ years of relevant experience or equivalent work experience in nuclear engineering or related field.
Intuition and expertise in fast reactor physics and design.
Experience with nuclear design/analysis methodologies , including criticality, flux/power distributions, fuel management optimization, reactivity coefficients, shielding, activation, control rod worth, detector response, and uncertainty analysis—ideally with a focus on fast-neutron reactors.
Deep knowledge of reactor physics analysis methods (e.g., deterministic and stochastic particle transport, isotopic depletion, perturbation theory, nuclear data, kinetics).
Experience with nuclear engineering software tools such as DIF3D, MC2, PARTISN, MCNP, Serpent, SCALE, PARCS, APA, CASMO, DRAGON, ARMI, or similar (preferred).
Strong computational expertise; comfortable using computers as powerful tools for simulation rather than just necessities.
Strong programming skills in any language required (Python, C++, Fortran are preferred).
Proven ability to integrate and automate simulation tools to improve efficiency.
Familiarity with software development tools (e.g., IDEs, version control systems, profilers, debuggers, documentation builders, packaging tools).
Experience interacting with the NRC on nuclear methodology in an ASME NQA-1 compliant QA environment (preferred).
Good working knowledge of numerical methods and applied mathematics (e.g., PDEs, numerical stability, statistics, numerical analysis, dynamics).
Strong formal technical documentation skills.
Ability to consistently meet aggressive project deadlines.
Self-motivated and proactive in seeking out tasks aligned with team goals.
Passion for software best practices and an eagerness to improve development processes.
Open to giving and receiving professional feedback through code reviews and other professional channels.
Strong verbal communication skills, with an ability to articulate complex technical information effectively.
A high degree of trust, integrity, and professionalism, with the ability to foster teamwork and communicate openly.
Additional Information:
Customer Service Manager Williamsburg Brooklyn Part time/full time 100k-150k Job Overview: We are seeking a Customer Service Manager to oversee and support a team of 10 customer service representatives . This role involves ensuring excellent customer support...
...patient-centered care. We are committed to improving the health and well-being of our community by ensuring accurate and efficient medical coding practices. Position Summary: We are seeking a detail-oriented and experienced ICD-10 Coder to join our home health care...
...client, Molina Healthcare, is seeking professionals. Apply via Lensa today! Job Description Job Summary The Director of Data Governance will build and execute the enterprise data governance strategy and roadmap in alignment with the company's vision. This role is...
...memberships the club is very active and offers a diverse calendar of events. We are looking for a motivated and driven individual to join... ...as they see fit, or in their absence Help with planning, coordinating, and executing events from concept to completion Manage...
...Associate Claims Adjusters handle entry-level insurance claims under close supervision through the life-cycle of a claim including but not... ...s degree preferred, or equivalent industry exposure/experience Ability to succeed with key training milestones Apply...