TSSD Services, Inc. (TSSD) was founded in 1999 and is a leading provider of professional and technical staffing solutions. TSSD currently maintains experienced professionals, providing services in the energy and utility sectors, with a focus on the nuclear industry. TSSD excels in decommissioning and environmental remediation, expertly managing decontamination, demolition, and site remediation projects. We handle the segregation, packaging, and disposal of low-level radioactive, hazardous, and clean demolition wastes, ensuring safe and efficient outcomes every time. Our experienced team has a proven track record of successfully managing safe, efficient, and cost-effective projects.About The RoleTSSD is seeking experienced Fuel Engineers to support a U.S. fuel manufacturer on analysis, design, and optimization of fuel and core systems. Successful candidates will bring depth in one or more of the following disciplines:Thermal/Mechanical - Heat transfer, thermodynamics, structural mechanicsHydraulic - Fluid dynamics, core/fuel assembly hydraulics, system behaviorSafety Analysis - Transient/accident analysis, licensing basis assessmentsCodes & Methods - Development, application, verification & validation of analytical methods and softwareWork is performed, primarily remotely, with sporadic travels as needed for integration, reviews, or on-site coordination.Key ResponsibilitiesFuel performance & design analysis: Evaluate fuel and component behavior under normal, AOO, and accident scenarios; quantify margins and identify design improvements.Thermal hydraulic modeling: Build and maintain models for core/assembly flow, pressure drop, CHF/MDNBR, and heat transfer; perform sensitivity/uncertainty studies.Safety & licensing support: Execute transient/accident analyses (e.g., LOCA, RIA, loss of flow/heat sink); prepare inputs for safety case and regulatory submittals.Codes & Methods: Apply and (as assigned) enhance validated analysis methods; perform model V&V, document assumptions and biases, and maintain configuration control under quality procedures.Technical documentation: Produce clear calculation files, engineering memos, and customer facing technical reports; present results to internal and client design authorities.Data & testing: Define or review test plans, analyze test data, and reconcile model to test results for model improvement.Cross functional collaboration: Work with fuel design, materials, thermal hydraulics, manufacturing, and safety/licensing teams to drive integrated solutions.Standards & compliance: Follow applicable industry codes/standards and internal QA practices; contribute to continuous improvement of engineering workflows.BS in Nuclear, Mechanical, Chemical, or related Engineering (MS/PhD preferred for Safety Analysis or Methods roles).3+ years directly relevant experience in at least one focus area: Thermal/Mechanical, Hydraulic, Safety Analysis, or Codes & Methods.Hands on experience with engineering analysis and model development; proficiency in data analysis and scripting (e.g., Python/Matlab) and version control (e.g., Git).Background with fuel performance, core thermal hydraulics, or safety analysis for light water reactors or comparable technologies.Experience preparing inputs for licensing or interacting with customer/regulatory stakeholders.Familiarity with common industry codes and solvers (examples may include fuel performance, TH system, sub channel, neutronics, or Monte Carlo tools), and with QA governed engineering processes.Knowledge of materials behavior (e.g., fuel, cladding, structural materials) under irradiation and thermal mechanical loads.Strong communication and collaboration skills in a multi-disciplinary, remote environment.Pourquoi nous rejoindre ?What We OfferEmployment Type: Full Time (project-based engagements may also be available)Location: Remote (U.S.) with periodic travelStart: Targeting January 2026Opportunity to contribute to a high impact U.S. fuel manufacturing program in a modern, remote first setup with purposeful onsite collaboration.Competitive compensation and benefits aligned with role seniority and impact.A culture focused on safety, technical excellence, and pragmatic problem solving.J-18808-Ljbffr
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