System OneSenior Mechanical Engineer (Vessels) System OneSenior Mechanical Engineer (Vessels)Bellevue, WARemote$69–$115 / hourPerform detailed design, analysis, and documentation for ASME Section III Class HB and/or Section VIII division 2 vessels, including nozzles, flanges, support brackets, and other support elements used in nuclear facilities. Minimum of six years of equipment / component design experience for level 10 or minimum of ten years of equipment / component design experience for level 11; relevant M.S. degree credited as two years of experience.
System OneSenior Mechanical Engineer (Supports) System OneSenior Mechanical Engineer (Supports)Bellevue, WARemote$69–$115 / hourThe Senior Engineer will work as part of a high functioning team of engineers and scientists focused on developing the design of next generation advanced nuclear reactors. The successful candidate will be responsible for preparing and reviewing Design Specifications (DS) and Design Reports (DR) in accordance with ASME Section III requirements, as well as supporting licensing, compliance, and customer deliverables.
System OneNewSenior Mechanical Engineer System OneSenior Mechanical EngineerBellevue, WARemoteSystem One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. Working experience with ASME Boiler & Pressure Vessel Code Section III.
System OneSenior Mechanical Engineer - Remote System OneSenior Mechanical Engineer - RemoteSeattle, WARemote$55–$75 / hourThis position will play a key role in managing multi-discipline engineering efforts, supporting EPCm-style projects, and ensuring successful project execution across safety, quality, cost, and schedule. This role is ideal for a hands-on engineering professional who is experienced across the full project lifecycle—from concept and pre-FEED through commissioning and startup.
System OneNewSenior Mechanical Design Engineer System OneSenior Mechanical Design EngineerBellevue, WARemote$56–$95 / hourThe successful candidate will collaborate closely with vendors, project engineers, and technical leads to help deliver hardware for the first liquid-fueled, fast-spectrum reactor to be constructed and operated at Idaho National Laboratory. System One is seeking a Senior Mechanical Design Engineer to support the Molten Chloride Fast Reactor (MCFR) program and the Molten Chloride Reactor Experiment (MCRE).
System OneCRD System Design Engineer (Mechanical) System OneCRD System Design Engineer (Mechanical)Bellevue, WARemote$54–$90 / hourThe selected candidate will collaborate with project managers, design engineers, analysts, test engineers, supply chain teams, and other engineering disciplines to support the successful development and deployment of advanced reactor technology. The successful candidate will demonstrate strong technical leadership, engineering excellence, attention to detail, and the ability to thrive in a fast-paced, collaborative engineering environment.
Amazon Data Services, Inc.NewSr. Mech Product Manager-Tech, DCE - Mechanical Products & Services (MPS) Amazon Data Services, Inc.Sr. Mech Product Manager-Tech, DCE - Mechanical Products & Services (MPS)Seattle, WAOur team of Technical Program Managers, Product Managers – Technical, Mechanical Engineers, and Principal Engineers work closely to innovate, create, manage, and deliver holistic programs, and ensure products are fully production ready at launch. Our scope also includes emergent global scale remediation strategic efforts that impact Data Center capacity or availability and introducing and driving business improvement initiatives increasing visibility and enabling data driven decision making.
System OneNewMechanical Design Engineer System OneMechanical Design EngineerBellevue, WA$52–$85 / hourYou will work within a high-performing, multi-disciplinary engineering team that includes materials science and thermal-hydraulics experts to develop novel analysis methodologies and support the design of next-generation reactor hardware. This position will report to the MCFR Mechanical Design Manager and play a critical role in the mechanical analysis, scripting, and design scoping of reactor components.
Amazon Data Services, Inc.NewPrincipal Technical Product Manager, Liquid Cooling, Mechanical Products and Services Amazon Data Services, Inc.Principal Technical Product Manager, Liquid Cooling, Mechanical Products and ServicesSeattle, WADirect innovative, high-performance teams in developing integrated cooling solutions combining heat capture and heat rejection technology, optimizing facility-wide thermal management exceeding 100MW+ while achieving industry-leading mechanical PUE below 1.05. If you have experience leading the system level product strategy for mechanical products/solutions, have an extensive understanding of liquid-cooled solutions in data centers, and know how products should be operated to ensure quality and scalability, you may be a good fit.
Amazon Data Services, Inc.NewSr. Water Systems Product Manager, Mechanical Products & Services Amazon Data Services, Inc.Sr. Water Systems Product Manager, Mechanical Products & ServicesSeattle, WAThis PMT role specifically addresses the critical water and chemical engineering dimension of mechanical cooling products—ensuring that evaporative media, water treatment systems, and chemical programs are optimized for performance, cost, reliability, and environmental compliance at hyperscale. Our scope also includes emergent global scale remediation strategic efforts that impact Data Center capacity or availability and introducing and driving business improvement initiatives increasing visibility and enabling data driven decision making.
System OneRAC System Design Engineer (Mechanical) System OneRAC System Design Engineer (Mechanical)Bellevue, WARemote$54–$90 / hourThe selected candidate will collaborate with project managers, design engineers, analysts, test engineers, and multidisciplinary engineering teams to support the successful design, integration, and deployment of this first-of-a-kind reactor technology. This role will support the ongoing development of a passive reactor cooling system designed to continuously remove heat through natural convection, providing safe and reliable cooling without reliance on pumps or operator actions.
System OneNewMechanical Designer System OneMechanical DesignerBellevue, WA$37–$74 / hourDevelop 3D CAD models and detailed engineering drawings for mechanical and structural systems supporting advanced nuclear reactor projects. System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America.
JobotEmbedded Solutions Engineer – Space Systems JobotEmbedded Solutions Engineer – Space SystemsSeattle, WA$126,000–$250,000 / yearFPGA Integration (Optional): Experience interfacing with or developing alongside FPGAs, including familiarity with common communication interfaces (AXI, PCIe, custom parallel buses),register-mapped peripheral access from embedded Linux or bare-metal environments, and collaborative bring-up with digital design engineers. Excellent Communication Skills: Effectively convey ideas and communicate technical topics with engineering, build staff, and operations; run self-directed design reviews and participate in reviews of parallel systems.
System OneSenior Mechanical Designer System OneSenior Mechanical DesignerBellevue, WA$69–$115 / hourThis role is responsible for creating structural and mechanical design solutions, developing 3D CAD models, and producing detailed engineering drawings to support conceptual and preliminary design efforts. System One is seeking a highly motivated Senior Mechanical Designer to support the design and development of advanced Generation IV nuclear reactor systems.
JobotApplications Engineer / BAS Programmer JobotApplications Engineer / BAS ProgrammerSeattle, WARemote$90,000–$120,000 / hourThe right candidate will work closely with engineering, project management, and field teams to turn mechanical and electrical system designs into fully operational BAS and controls platforms that optimize building performance, reliability, and efficiency. Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal.
Strategic Technology Institute Inc,NewEngineering Technician II and IV (TISS, WA) Strategic Technology Institute Inc,Engineering Technician II and IV (TISS, WA)Keyport, WAThis posting covers two levels: Engineering Technician II (entry-level with 1+ year of experience) and Engineering Technician IV (senior-level with 5+ years of experience). Support undersea tracking range operations by operating and maintaining range support systems (electronic, acoustic, video, mechanical, electro-hydraulic).
AxelonEngineering Test Tech AxelonEngineering Test TechMonroe, WA$45–$50 / hourMust have a high school diploma, an equivalent certificate, or a bronze level WorkKeys certification and proficiency in the use of drawings, specifications, basic math, computer, technical and mechanical skills. Engineering Test Technician will be responsible for supporting all aspects of assembly, validation, and qualification testing of both hydraulic and electromechanical actuation products.
MasTec IndustrialNewEstimator, Mechanical MasTec IndustrialEstimator, MechanicalSeattle, WA$100,000–$140,000 / yearIn addition to our industrial market sector; In infrastructure, we specialize in general heavy civil construction, underground utilities, structures, electrical work, material production, roadways, bridges, specialty pavement overlays, environmental projects and commercial buildings. When the Estimator II is designated as the Lead Estimator on an estimate, the following additional responsibilities will be required: Supervise and line out all people on the bid team, provide adequate information to team members and establish bidding schedule with deadlines.
System OneNewSenior Engineer System OneSenior EngineerBellevue, WARemote$56–$95 / hourThe successful candidate will be responsible for preparing, reviewing, and certifying Design Specifications (DS) and Design Reports (DR) in accordance with ASME Boiler & Pressure Vessel Code Section III, while supporting regulatory, compliance, and customer deliverables. 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.
804 TechnologyNewEWIS Engineer (w/Capital Harness Experience) 804 TechnologyEWIS Engineer (w/Capital Harness Experience)Seattle, WA$165,000–$184,000 / yearFull timeYou will play a key part in ensuring wiring harnesses and interconnection systems meet all functional, safety, and certification requirements while delivering high-quality engineering solutions to our customers. We are seeking a talented EWIS (Electrical Wiring Interconnection System) Engineers with 5+ years of drawing and design experience in Siemens Capital Harness (Capital).
Epitec, IncTest Engineer III Epitec, IncTest Engineer IIIRedmond, WAMaster’s degree or equivalent experience in Optics, Optical Engineering, Optical Sciences, Physics, Mechanical Engineering, Electrical Engineering, Computer Science, or a related field. This is a high-impact opportunity for individuals with experience in display systems, optical testing, and AR/VR technologies who enjoy working in fast-paced, engineering-driven environments.
System OneNewSystem Design Engineer System OneSystem Design EngineerBellevue, 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.
MicrosoftHardware Systems Engineer MicrosoftHardware Systems EngineerRedmond, WA$100,600–$199,000 / yearResponsibilities will include architecting and developing efficient test and debug frameworks for cutting edge technologies, building test and debug automation, partnering with leading technology providers to define test and debug strategies, driving unified and efficient test, validation and debug methodologies across product segments. Masters Degree in Electrical Engineering, Computer Engineering, Mechanical Engineering, or related field OR Bachelors Degree in Electrical Engineering, Computer Engineering, Mechanical Engineering, or related field AND 2+ years technical engineering experience OR equivalent experience.
System OneFuel Handling Design Engineer System OneFuel Handling Design EngineerBellevue, WA$52–$85 / hourInterface with cross-functional design disciplines (mechanical, instrumentation & controls, civil, nuclear) to develop plant design information and define system design/performance criteria. Physical requirements include sitting and/or standing for extended periods, bending/stooping, grasping/gripping, fine motor control, with minimal physical exertion, including the ability to safely lift up to 25 pounds.
System OneWeld Engineer System OneWeld EngineerBellevue, WA$63–$80 / hourThis is a hands-on, high-impact role where your weld engineering and metallurgy expertise will influence how advanced components are designed, tested, qualified, and transitioned into supplier-ready manufacturing processes. System One is seeking a highly motivated Weld Engineer to support a Materials Development & Qualification team advancing next-generation materials and components for sodium-cooled fast reactors.
System OneRAC Component Design Engineer (Ventilation) System OneRAC Component Design Engineer (Ventilation)Bellevue, WARemote$50–$80 / hourProvide technical direction and interface to supplier projects, working with supply chain teams to ensure delivery of engineering designs and other deliverables, as well as coordination and performance of technical reviews of deliverables. Interface with and support licensing activities needed to obtain both the construction and operating licenses for the reactor systems including development of safety analysis reports, technical specifications, topical reports, and other licensing documents.
System OneSystem Transients Analysis Engineer System OneSystem Transients Analysis EngineerBellevue, WARemote$67–$110 / hourThis role will focus on thermal hydraulic and transient analysis activities supporting advanced reactor system design, plant operations analysis, and control system integration. System One is seeking a highly capable and motivated System Transients Analysis Engineer to support an advanced sodium-cooled reactor program.
System OneComponent Engineer, Nuclear System OneComponent Engineer, NuclearBellevue, WARemote$52–$85 / hourSystem One, and its subsidiaries including Joulé, ALTA IT Services, and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. This role may require sitting or standing for extended periods, with tasks including bending, grasping, and fine motor control.
System OneNewSenior Welding Engineer System OneSenior Welding EngineerBellevue, WA$56–$95 / hourSystem One is seeking a Senior Welding Engineer for a yearlong contract role to work as part of a high-functioning team of engineers focused on materials processing, supply chain development and supplier qualification for next generation material and components for sodium-cooled fast reactors. Oversee test programs for qualification of welds, including mechanical properties, burst testing, thermal creep, creep-fatigue, neutron irradiation, thermal aging, and sodium exposure .
System OneNewThermal Analysis Engineer System OneThermal Analysis EngineerBellevue, WARemote$52–$85 / hourPerform thermal modeling of fluid-structure interfaces, including metallic structure thermal problems with structure conductive heat transfer, air convective heat transfer, radiation, and sodium-structure heat transfer modes. Work with our client’s component design leads and analysis engineers to evaluate specific component issues, develop local models or modify existing, and provide insights and feedback to design teams for action.
System OneSenior Component Design Engineer (RPA) – Contract System OneSenior Component Design Engineer (RPA) – ContractBellevue, WARemote$56–$95 / hourRequirements B.S. degree in Mechanical Engineering or equivalent (minimum of eight years of equipment/component design experience; relevant M.S. degree credited as two years of experience) . System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America.
System OneSenior Structural Analyst System OneSenior Structural AnalystBellevue, WARemote$54–$90 / hourThis is a dedicated position focused on analyzing the mechanical performance of various reactor enclosure components, reactor internal components, reactor vessels, and nuclear island components under high temperature environment as well neutron fluence. Proficient in finite element stress analysis, mechanical analysis methods, and commercial mechanical stress analysis and modeling tools with emphasis on ANSYS and SolidWorks.
MicrosoftSenior Electrical Engineer - Planning & Coordination MicrosoftSenior Electrical Engineer - Planning & CoordinationRedmond, WA$119,800–$234,700 / yearPartner across qubit design, electrical engineering, mechanical engineering, systems engineering, reliability, sourcing, supply chain, fabrication partners, contract manufacturers, system integrators, and leadership teams to align deliverables, resolve blockers, and support high-quality execution. We are seeking a Senior Electrical Engineering - Engineering Planning Coordinator with an electrical engineering background to lead complex printed circuit board (PCB) supplier engagements, drive process development, coordinate multidisciplinary hardware teams, and oversee program schedules, budgets, and resource planning.
System OneComponent Design Engineer (RPA) – Contract System OneComponent Design Engineer (RPA) – ContractBellevue, WARemote$52–$85 / hourSupport continuous learning and application of nuclear industry best practices to maintain the highest quality of engineering design and proactively identify process change/enhancement opportunities. The Component Design Engineer (RPA) will work as part of a high functioning team of engineers and scientists focused on developing the design of next generation advanced nuclear reactors.
BC ForwardTest Engineer III (Metrology) BC ForwardTest Engineer III (Metrology)Redmond, WA$53–$55 / hourFull timeMaster's degree or equivalent experience in Optics, Optical Sciences, Optical Engineering, Physics, Mechanical Engineering, Electrical Engineering, Computer Sciences, or a similar field. The ideal candidate will have strong experience in optical testing, calibration, data analysis, and test automation and a proven ability to develop and execute test procedures, analyze results, and drive hardware quality.
Apex Systems, Inc.Mechanical & Electrical Engineering - Mechanical Engineer III - 3033841 Apex Systems, Inc.Mechanical & Electrical Engineering - Mechanical Engineer III - 3033841Redmond, WATemporaryContractorFull timeIn terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts.
Parker Hannifin CorporationIntern - Mechanical Engineering (Aerospace) Parker Hannifin CorporationIntern - Mechanical Engineering (Aerospace)Woodmont Beach, WA$18.42–$30.70 / hourInternFull timeOur passionate people with deep engineering expertise, together with our breadth of differentiated technologies, ensure that we make the extraordinary happen and continue to shape the future of aviation in partnership with our customers. That is why we are so proud of everyone in our Exotic family who strives to be the best at what they do every day, working as a collaborative team in a culture of continuous improvement to stretch the bounds of creative thinking and provide quality products to our customers around the globe.
Yoh Services LLCR&D Lab Technician - Mechanical Engineering Yoh Services LLCR&D Lab Technician - Mechanical EngineeringRedmond, WAFull timePhysical Requirements:* Ability to lift and move materials up to 50 lbs.* Ability to stand for extended periods and perform hands-on assemblyEstimated Min Rate: $35.00Estimated Max Rate: $40.00/hr+ Depends on work experience. R&D Lab Technician - Mechanical EngineeringWe are seeking a hands-on R&D Lab Technician to support our Mechanical Engineering team in prototyping, assembly, testing, and lab operations.
Blue Origin LLCGround System Fluid Mechanical Design Engineer III Blue Origin LLCGround System Fluid Mechanical Design Engineer IIISeattle, WAFull timeand/or transports placardable amounts of hazardous materials by ground in any vehicle on a public road while in commerce, may be subject to additional Federal Motor Carrier Safety Regulations including: Driver Qualification Files, Medical Certification (obtained before onboarding), Road Test, Hours of Service, Drug and Alcohol Testing (CDL drivers only), vehicle inspection requirements, CDL requirements (if applicable) and hazardous materials transportation/shipping training. To conform to U.S. Government commercial space technology export regulations, including the International Traffic in Arms Regulations (ITAR), 8 U.S.C. § 1324b(a)(3), applicants for employment at Blue Origin must be a U.S. citizen or national, lawfully admitted for permanent residence into the U.S. (i.e. current green card holder), or lawfully admitted as a refugee or granted asylum under 8 U.S.C. § 1157-1158.
Gannett Fleming, Inc.Mechanical Engineer Gannett Fleming, Inc.Mechanical EngineerTacoma, WAFull timeThis is an excellent opportunity to independently perform mechanical engineering (HVAC and/ or plumbing) design calculations, technical studies and prepares plans and specifications for a wide variety of project types which may include commercial, transportation, education, municipal, aviation, and federal clients. Understands client requirements as they relate to the mechanical scope of work; aligns and develops detailed design documents including drawings, specifications, cost estimates, reports, and calculations.
P2S, Inc.Senior Mechanical Engineer P2S, Inc.Senior Mechanical EngineerSeattle, WA$148,000–$180,000 / yearFull timeThird-Party Recruiting DisclaimerLegence and its affiliates do not accept unsolicited resumes from agencies; any such submissions without a prior signed agreement authorized by Legence Holdings LLC's CHRO or Director of Talent Acquisition will not incur fees and are considered property of Legence. The company specializes in designing, fabricating, and installing complex HVAC, process piping, and other mechanical, electrical, and plumbing (MEP) systems-enhancing energy efficiency, reliability, and sustainability in new and existing facilities.
TerraPowerSenior Mechanical Engineer ASME Lead TerraPowerSenior Mechanical Engineer ASME LeadBellevue, WA$168,316–$252,475 / yearFull timeTerraPower is seeking to hire highly motivated and forward-thinking professionals who are interested in focusing on advanced nuclear reactor research and development and influencing change within the nuclear power landscape and bringing forward the critical production of medical isotopes. The successful candidate will be responsible for preparing, reviewing, and certifying Design Specifications (DS) and Design Reports (DR) in accordance with ASME Section III requirements, as well as supporting licensing, compliance, and customer deliverables.
Colliers Engineering & DesignSenior Mechanical Engineer - Buildings Colliers Engineering & DesignSenior Mechanical Engineer - BuildingsSeattle, WA$106,600–$140,000 / yearFull timeWe have also created an internal culture that provides the resources and technology needed to encourage personal and professional growth opportunities through reimbursement for education; a free in-house resource for hundreds of educational and self-enrichment courses; mentorship program; wellness program; Women's Organization and ongoing philanthropic opportunities. We provide a full range of mechanical engineering services to municipal, commercial, higher education and public works agencies, partnering with clients to design buildings from the ground-up or to renovate existing buildings to optimize their use.
Blue Origin LLCMechanical Systems Engineer II - New Glenn Upper Stage Blue Origin LLCMechanical Systems Engineer II - New Glenn Upper StageSeattle, WAFull timeand/or transports placardable amounts of hazardous materials by ground in any vehicle on a public road while in commerce, may be subject to additional Federal Motor Carrier Safety Regulations including: Driver Qualification Files, Medical Certification (obtained before onboarding), Road Test, Hours of Service, Drug and Alcohol Testing (CDL drivers only), vehicle inspection requirements, CDL requirements (if applicable) and hazardous materials transportation/shipping training. To conform to U.S. Government commercial space technology export regulations, including the International Traffic in Arms Regulations (ITAR), 8 U.S.C. § 1324b(a)(3), applicants for employment at Blue Origin must be a U.S. citizen or national, lawfully admitted for permanent residence into the U.S. (i.e. current green card holder), or lawfully admitted as a refugee or granted asylum under 8 U.S.C. § 1157-1158.
IMEG Corp.Senior Mechanical Engineer | Seattle, WA IMEG Corp.Senior Mechanical Engineer | Seattle, WAQueen Anne, WAFull timeIMEG is hiring a Senior Mechanical Designer in Seattle, Washington, to lead design efforts as a project manager or lead designer for moderate to complex projects and support delivery of larger, high-complexity work with limited senior oversight. In this role, you will provide project direction, engineering solutions, and client guidance while overseeing project management, engineering analysis, design, and implementation of mechanical systems for the vertical building industry.
Affiliated Engineers, Inc.Mechanical Engineer I Affiliated Engineers, Inc.Mechanical Engineer ISeattle, WAFull timeAEI consistently earns national recognition from leading industry publications, including Building Design+Construction, Engineering News-Record, and Consulting-Specifying Engineer, with distinctions such as being named the #1 Laboratory Engineering Firm in the nation and receiving multiple Best of the Best Project awards, underscoring the lasting legacy of our work. As you gain project experience, you will take on a greater role in leading mechanical project teams, writing specifications, participating in project meetings with clients and other consultants, and supporting construction-phase work.
Blue Origin LLCMechanical Engineer II Blue Origin LLCMechanical Engineer IISeattle, WAFull timeand/or transports placardable amounts of hazardous materials by ground in any vehicle on a public road while in commerce, may be subject to additional Federal Motor Carrier Safety Regulations including: Driver Qualification Files, Medical Certification (obtained before onboarding), Road Test, Hours of Service, Drug and Alcohol Testing (CDL drivers only), vehicle inspection requirements, CDL requirements (if applicable) and hazardous materials transportation/shipping training. ITAR RequirementsTo conform to U.S. Government commercial space technology export regulations, including the International Traffic in Arms Regulations (ITAR), 8 U.S.C. § 1324b(a)(3), applicants for employment at Blue Origin must be a U.S. citizen or national, lawfully admitted for permanent residence into the U.S. (i.e. current green card holder), or lawfully admitted as a refugee or granted asylum under 8 U.S.C. § 1157-1158.
Coffman EngineersSenior Mechanical Engineer (10+ Years) Coffman EngineersSenior Mechanical Engineer (10+ Years)Seattle, WAFull timeOur broad range of markets, clients, and services, coupled with industry-leading talent, provides unique and exciting opportunities to grow as professionals, serve clients, and make a difference in our communities. The role involves working across varied project delivery approaches, managing projects through design and execution, and focusing on sustainable engineering solutions.