Sodium Fire Design and Analysis Engineer System OneSodium Fire Design and Analysis EngineerBellevue, WARemote$102–$130 / hourOther engineering activities include, but are not limited to, contributing to the development of computational methodologies and models, contributing to software commercial grade dedication, participating in hazard analysis, participating in Phenomena Identification and Ranking Table (PIRT) exercises, participating in Structures, Systems and Components (SSC) classification, developing analytical methods, performing analysis of sodium fire as well as verification and validation activities. The successful candidate will be responsible for developing sodium fire modeling methodologies, performing commercial grade dedication of sodium fire modeling codes, and performing sodium fire modeling calculations to support our client’s design and licensing.
Nuclear Plant Integration Engineer (Test Abstracts and Specifications) System OneNuclear Plant Integration Engineer (Test Abstracts and Specifications)Bellevue, WARemote$69–$115 / hourSystem One is seeking an experienced Nuclear Plant Integration Engineer to coordinate and support the creation, development and management of post-construction and startup test abstracts and test specifications for our client’s Advanced Reactor Demonstration project. The primary focus of this role is developing and fortifying the framework, across the system design engineering teams, for creation and authorship of test procedures, test abstracts and test specifications.
System Design Engineer, Sodium Cover Gas Systems System OneSystem Design Engineer, Sodium Cover Gas SystemsBellevue, WARemote$69–$115 / hourInterface with the design team to create and manage drawing packages of system designs, including but not limited to Piping and Instrumentation Diagrams (P&IDs), 3D models, and system interface drawings. B.S. in Mechanical, Chemical, Nuclear Engineering, or related discipline from an accredited university and 10+ years direct experience with proven mechanical systems skills.
Nuclear Safety Analysis Engineer System OneNuclear Safety Analysis EngineerBellevue, WARemote$46–$77 / hourFamiliarity with nuclear design, regulatory requirements, and risk-informed performance-based technology guidance for Non-Light Water Reactors, including EMDAP and Regulatory Guide 1.203, is preferred. Assess plant transient benchmark tests, identify applicable tests relevant to the advanced reactor, and perform benchmark calculations.
Senior Structural Analyst System OneSenior Structural AnalystBellevue, WARemote$56–$95 / hourThis role focuses on performing structural and finite element analyses (FEA) of reactor vessels, reactor internals, containment structures, and nuclear island components operating in high-temperature and radiation environments. The ideal candidate will have extensive experience with structural mechanics, ANSYS, ASME design codes, and engineering analysis for complex mechanical systems.
I&C Design Engineer System OneI&C Design EngineerBellevue, WARemote$69–$115 / hourRequirements: B.S. or higher in Controls, Electrical, or related discipline from an accredited university with 10+ years of direct experience in instrumentation and controls systems. Responsibilities: Act as an I&C Engineer for Sodium Fast Reactor technologies, responsible for system design, prototype development, testing, integration, and commissioning.
Plant Radiological Integration Engineer System OnePlant Radiological Integration EngineerBellevue, WARemote$69–$115 / hourResponsibilities Coordinate between design teams working on plant source term and radiological release analysis, risk analysis, plant operations and SSC radiological shielding design teams. System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America.
Senior Engineer, Fuel Handling and Dry Storage System OneSenior Engineer, Fuel Handling and Dry StorageBellevue, WARemote$52–$85 / hourThis role is responsible for the engineering design of spent fuel pool systems, dry cask storage equipment, and associated mechanical systems while supporting licensing, regulatory compliance, and multidisciplinary engineering activities. System One is seeking an experienced Senior Fuel Handling & Dry Storage System Engineer to support the design, analysis, and qualification of nuclear fuel handling and dry storage systems for advanced nuclear energy projects.
Nuclear Maintenance & Technical Training Developer / Instructor (Electrical) System OneNuclear Maintenance & Technical Training Developer / Instructor (Electrical)Bellevue, WARemote$56–$95 / hourIncorporates information gained from INPO Significant Operating Experience Reports, NRC Circulars, Bulletins, and Information Notices, plant design changes, plant procedure changes and revisions, new regulations, and training effectiveness reports into the training program and various training material. Provides training and instruction on Electrical Systems including operation, maintenance, troubleshooting, and repair of nuclear plant electrical systems such as pumps, valves, turbines, and heat exchangers.
Fabrication Oversight Administrative Coordinator System OneFabrication Oversight Administrative CoordinatorBellevue, WARemote$36–$65 / hourReview reports prepared by the Fabrication Oversight team (e.g., Fabrication Oversight reports, Supplier Capability and Capacity reports) to ensure clarity, conciseness, and consistency. Strong understanding of the sensitive nature of working with controlled information; exercises sound judgment, problem-solving ability, and maintains the highest levels of confidentiality and integrity.
Senior Engineer, Plant Thermal Hydraulics Methods System OneSenior Engineer, Plant Thermal Hydraulics MethodsBellevue, WARemote$52–$85 / hourOther engineering activities include, but are not limited to, system transient codes development and maintenance, performing reactor transient analyses, code benchmark with Integral Effect Tests (IETs) or Separate Effect Tests (SETs), scaling analysis, software commercial-grade dedication, contributing to code assessment and adequacy evaluation, as well as performing verification and validation activities. Requirements Degree in Mechanical, Nuclear, Chemical Engineering, or similar fields, with 5+ years of experience in system-level thermal hydraulic modeling and method development for nuclear or complex energy systems.
Mechanical Systems Engineer System OneMechanical Systems EngineerBellevue, WARemote$62–$102 / hourProvide technical direction and oversight of supplier projects, working with the Contract Administrator and Supplier Project Engineer to ensure delivery of data and other deliverables, as well as coordination and performance of technical reviews of deliverables. Generate design packages for systems, sub-systems, and equipment designs including coordination of calculations, design reports, mechanical drawings, and engineering design.
Sodium Fire Analysis Engineer System OneSodium Fire Analysis EngineerBellevue, WARemote$56–$95 / hourOther engineering activities include, but are not limited to, contributing to the development of computational methodologies and models, contributing to software commercial grade dedication, participating in hazard analysis, participating to Phenomena Identification and Ranking Table (PIRT) exercises, participating to Structures, Systems and Components (SSC) classification, developing analytical methods, performing analysis of sodium fire as well as verification and validation activities. Familiarity with functional containment approach and nuclear design, regulatory requirements, and risk-informed performance-based guidance for Non-Light Water Reactors.
System Design Engineer, Electromagnetic Pumps System OneSystem Design Engineer, Electromagnetic PumpsBellevue, WARemote$69–$115 / hourGenerate design package for pumps, pump support systems, sub-systems, and equipment designs including coordination of calculations, design reports, mechanical drawings, and engineering design specifications. This individual will provide technical ownership of a submersible EM pump operating within a liquid-sodium processing system and coordinate with multidisciplinary engineering teams, suppliers, and testing personnel.
Licensed Exam and Exam Program Developer System OneLicensed Exam and Exam Program DeveloperBellevue, WARemote$69–$115 / hourPrepare NRC-facing regulatory documents related to the examination program (e.g., topical reports, white papers, exemption requests, program descriptions) and support those documents through NRC staff review and interactions. Author facility-level NRC operator examination products, including written examination outlines, written exams, job performance measures (JPMs), and dynamic simulator scenarios.
System Design Engineer, Fluids System OneSystem Design Engineer, FluidsBellevue, WARemote$69–$115 / hourThis role will support the Sodium Processing Systems team , focusing on system design, vendor coordination, and integration of hardware into overall plant system architecture for a next-generation nuclear reactor program. Bachelor’s degree in Mechanical Engineering, Chemical Engineering, or related discipline from an accredited university.
I&C Design Engineer, Nuclear System OneI&C Design Engineer, NuclearBellevue, WARemote$69–$115 / hourProvide technical direction and oversight of supplier projects, working with the contract administrator to ensure delivery of data and other deliverables to meet company requirements, as well as coordination and performance of technical reviews of deliverables. Specify and describe the suitability of instrumentation measurement techniques for use in sodium fast reactor and integrated energy storage technologies, including analysis of measurement range, response time, and measurement accuracy.
Nuclear Engineering Program Developer System OneNuclear Engineering Program DeveloperBellevue, WARemote$56–$95 / hourThe successful candidate will coordinate with engineers working on systems, components, or engineering analysis areas such as safety analysis, thermal analysis, stress analysis, and/or process/control analysis. Provide inputs on plant level and system level requirements, specifications, and strategy documents related to plant operations and maintenance activities over the lifecycle of a nuclear facility.
Fuel Handling System Design Engineer System OneFuel Handling System Design EngineerBellevue, WARemote$52–$85 / hourSystem One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. Develop analyses such as thermal, seismic, structural, pipe stress, heat transfer, and others, integrating results into plant design delivery.
NewFuel Handling Mechanical Design Engineer System OneFuel Handling Mechanical Design EngineerBellevue, WARemote$52–$86 / hourSystem One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. Complete design through calculations, developing drawings, using and writing software and commercially available engineering tools.