JobotNewSenior Wireless Systems Engineer (R&D) JobotSenior Wireless Systems Engineer (R&D)Seattle, WA$150,000–$200,000 / yearIn their previous lives, the founding team has been successful in raising $100s of millions in venture funding, developing the Amazon Sidewalk network, launching billions of dollars of space assets, and leading their teams to successful exits, both through acquisition and IPO. 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.
JobotNewWireless Systems Engineer (Hardware) JobotWireless Systems Engineer (Hardware)Seattle, WA$130,000–$200,000 / yearExcellent 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. 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.
JobotNewEmbedded 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.
MicrosoftNewHardware 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.
VAST DataNewSenior Systems Engineer - Higher Ed & SLED VAST DataSenior Systems Engineer - Higher Ed & SLEDSeattle, WADemonstrate technical leadership and subject matter expertise on storage products, distributed storage architectures, file systems, and competitive storage offerings in the DAS, NAS and SAN product spaces. We are building the enterprise software infrastructure to capture, catalog, refine, enrich, and protect massive datasets and make them available for real-time data analysis and AI training and inference.
Kforce Inc.Systems Engineer Kforce Inc.Systems EngineerSeattle, WA$63–$70The successful engineer in this role will: Understand how complex robotics workcells operate, including an understanding of servo drives, industrial networks, safety systems, and integration with host systems. In depth knowledge of and experience developing controls systems including developing PLC and HMI applications and integrating components like drives, barcode readers, and remote sensors.
System OneNewSenior Systems Engineer - Applications System OneSenior Systems Engineer - ApplicationsBellevue, WARemote$56–$95 / hourManage, support, and optimize enterprise business applications supporting plant operations, including EAM/ERP systems and the Dynamic Work Execution Platform (DWEP). 7+ years managing enterprise or business applications, with at least 5 years administering ERP/EAM platforms in regulated environments such as utilities or manufacturing.
JT4Network Engineer JT4Network EngineerSeattle, WAFull timeA Bachelor of Science in Engineering from an ABET-accredited academic institution and eight (8) years of related engineering experience, or an accredited Master of Science in Engineering and a minimum of six (6) years of related engineering experience, or an accredited doctorate degree in engineering and a minimum four (4) years of related engineering experience are required for this position. Engineer Network Security: Engineer and implement network security baselines, including access control and firewall integration (e.g., Palo Alto, Juniper SRX, Cisco ASA), and architect the network routing infrastructure to support DoD Suite A/B encryption environments.
System OneNewSystem 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 OneNewSystem Design Engineer System OneSystem Design EngineerBellevue, WARemoteSystem One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. Coordinate and integrate results from multi-discipline analyses (thermal, structural, seismic, pipe stress, heat transfer) into system design .
JobotNewApplications 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.
JobotNewSenior Embedded Engineer - End Devices JobotSenior Embedded Engineer - End DevicesSeattle, WA$126,000–$250,000 / yearThis role requires deep technical credibility — you will be working peer-to-peer with experienced firmware engineers —combined with the communication skills to guide less-experienced teams to successful outcomes. 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 OneNewNuclear Cyber Security Systems Architect System OneNuclear Cyber Security Systems ArchitectBellevue, WARemote$56–$95 / hourThis is a high-impact engineering role working across multidisciplinary teams to deliver secure, compliant digital and control system architectures for next-generation nuclear facilities. This role is focused on the design, development, and integration of cyber and physical security systems within highly regulated nuclear environments.
*US AMR-Jones Lang LaSalle Americas, Inc.NewAssistant Chief Engineer *US AMR-Jones Lang LaSalle Americas, Inc.Assistant Chief EngineerSeattle, WA$87,100–$121,100Complete assigned tasks that include but are not limited to: painting, pressure washing, cleaning, maintaining lighting system bulbs/ballasts (as allowed by licensing requirements), plumbing, HVAC systems, water treatment, hanging pictures, repair office furniture, locksmith work and general maintenance. Whether you’ve got deep experience in commercial real estate, skilled trades or technology, or you’re looking to apply your relevant experience to a new industry, join our team as we help shape a brighter way forward.
JobotNewCivil Engineer JobotCivil EngineerEverett, WA$65,000–$85,000 / yearInformation 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. Responsibilities: Design and develop plans, specifications, and estimates for various civil engineering projects, such as water and wastewater systems, roadways, and underground utilities.
Widenet ConsultingM365 ENGINEER (RENTON, WA) Widenet ConsultingM365 ENGINEER (RENTON, WA)Renton, Rhode IslandContractorImplement, administer, and optimize Microsoft 365 services including Exchange Online, SharePoint, OneDrive, Teams, and Power Platform. In this role, you’ll be the go-to expert for our Microsoft collaboration and identity platforms, keeping systems running, secure, and aligned with business needs.
Widenet ConsultingSR. SOFTWARE ENGINEER Widenet ConsultingSR. SOFTWARE ENGINEERBellevue, WashingtonRemoteContractorDesigning and delivering RESTful APIs, including authentication, scaling, documentation, lifecycle management, and publishing via API management platforms. This role will focus on building secure, scalable services, contributing to architectural decisions, and driving engineering best practices across the team.
Widenet ConsultingM365 ENGINEER (BOSTON, MA) Widenet ConsultingM365 ENGINEER (BOSTON, MA)Renton, Rhode IslandContractorImplement, administer, and optimize Microsoft 365 services including Exchange Online, SharePoint, OneDrive, Teams, and Power Platform. In this role, you’ll be the go-to expert for our Microsoft collaboration and identity platforms, keeping systems running, secure, and aligned with business needs.
*US AMR-Jones Lang LaSalle Americas, Inc.NewSenior Chief Engineer *US AMR-Jones Lang LaSalle Americas, Inc.Senior Chief EngineerSeattle, WA$160,000–$205,000Whether you’ve got deep experience in commercial real estate, skilled trades or technology, or you’re looking to apply your relevant experience to a new industry, join our team as we help shape a brighter way forward. Jones Lang LaSalle (JLL), together with its subsidiaries and affiliates, is a leading global provider of real estate and investment management services.
Amazon.com Services LLCNewPower Electronics Engineer, Prime Air, Propulsion, Prime Air Amazon.com Services LLCPower Electronics Engineer, Prime Air, Propulsion, Prime AirSeattle, WAPrime Air is seeking an experienced Electrical Engineer to design and develop low and high voltage power electronics hardware and related electrical power systems for Prime Air Drones. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process, please visit https://amazon.jobs/content/en/how-we-hire/accommodations for more information.
JobotNewSr. AI Software Engineer (C#/.Net, infrastructure & startup exp. req'd) - 100% REMOTE JobotSr. AI Software Engineer (C#/.Net, infrastructure & startup exp. req'd) - 100% REMOTESeattle, WARemote$170,000–$270,000 / yearThe ideal candidate will be mid-level backend .Net Software Engineer with recent experience within a small, fast-paced, API-focused AI infrastructure startup company with lean, highly collaborative engineering teams, where they have operated with significant ownership, autonomy, and a strong “go-getter” mentality. 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.
JobotNewCertification Engineer JobotCertification EngineerMedina, WA$74,000–$95,000 / yearInformation 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. The successful candidate will be responsible for a diverse range of certification-related tasks, including developing training material on certification/ODA procedures and ensuring compliance with FAA regulations.
Widenet ConsultingSR. BACKEND ENGINEER Widenet ConsultingSR. BACKEND ENGINEERBellevue, WashingtonRemoteContractorExperience with AWS services, particularly Step Functions, Lambda, and event-driven architectures. · Develop and support AWS-based solutions, including Step Functions and event-driven workflows.
Digital Realty TrustNewSite Engineer Digital Realty TrustSite EngineerSeattle, WA$46.10–$48.15 / hourThe responsibilities of the Engineer-III are: to contribute to the daily site operation, including creation and modification of site operating procedures, contribute to creation of change management tickets, creation of timely incident reporting, site maintenance and repairs/inspections to help ensure Digital Realty’s data center operations achieve the highest level of availability. PlatformDIGITAL®, the company’s global data center platform, provides customers with a secure data meeting place and a proven Pervasive Datacenter Architecture (PDx®) solution methodology for powering innovation and efficiently managing Data Gravity challenges.
Digital Realty TrustNewSite Engineer II Digital Realty TrustSite Engineer IISeattle, WA$39.30–$41.30 / hourThe responsibilities of the Site Engineer II are: to contribute to the daily site operation, including creation and modification of site operating procedures, contribute to creation of change management tickets, creation of timely incident reporting, site maintenance and repairs/inspections to help ensure Digital Realty’s data center operations achieve the highest level of availability. PlatformDIGITAL®, the company’s global data center platform, provides customers with a secure data meeting place and a proven Pervasive Datacenter Architecture (PDx®) solution methodology for powering innovation and efficiently managing Data Gravity challenges.
MicrosoftNewSite Reliability Engineer - CTJ - POLY MicrosoftSite Reliability Engineer - CTJ - POLYRedmond, WA$119,800–$234,700 / yearMasters Degree in Computer Science, Information Technology, or related field AND 2+ years technical experience in software engineering, network engineering, or systems administration OR Bachelors Degree in Computer Science, Information Technology, or related field AND 4+ years technical experience in software engineering, network engineering, or systems administration OR equivalent experience. Our team works across all facets of isolated system engineering and is deeply involved in defining and improving service health through SLIs/SLOs and error budgets, building automation to reduce toil, strengthening observability (logs, metrics, traces), reducing systemic latency, validating and transforming data, and optimizing throughput and capacity.
MicrosoftNewPrincipal Software Engineer, CoreAI MicrosoftPrincipal Software Engineer, CoreAIRedmond, WA$142,800–$274,800 / yearThis role sits at the intersection of cloud infrastructure, systems software, virtualization, and container platforms, working closely with CoreAI, Azure Infrastructure, OS, Networking, and Hardware teams to deliver end-to-end platform capabilities. Build and operate advanced orchestration and resource governance scenarios using platforms such as AKS, Dynamic Resource Allocation (DRA), and related Kubernetes ecosystem capabilities to enable fair sharing, isolation, and efficient utilization of accelerated resources.
Talent Software ServicesSoftware Development Engineer 3 Talent Software ServicesSoftware Development Engineer 3Redmond, WA$40–$50 / hourFull timeKey projects: This role will contribute to monitoring device health through telemetry dashboards, investigating issues, assigning bugs, and gathering logs (including hands-on device support) to ensure stability in production. This role will focus on monitoring telemetry, diagnosing live issues, validating software releases, supporting incident response, and helping improve operational readiness across services, applications, and prototype device environments.
MicrosoftNewSoftware Engineer II - CTJ - POLY MicrosoftSoftware Engineer II - CTJ - POLYRedmond, WA$100,600–$199,000 / yearMasters Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR Bachelors Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python. We own and operate Microsoft 365 services including Office 365, Exchange, Outlook, Teams, SharePoint, OneDrive, Purview, Information Protection, PSTN, Office Online, Office Services, and are actively bringing CoPilot to sovereign environments.
JouléNewSenior Quality Assurance Engineer JouléSenior Quality Assurance EngineerRedmond, WA$65–$73 / hourJoin a collaborative and innovation-driven medical technology organization as a Senior Quality Assurance Engineer, where you'll play a key role in ensuring product quality, supplier performance, and manufacturing excellence. Perform critical assessments and qualifications of internal and supplier-proposed change management activities, including Production Part Approval Process (PPAP) activities for supplier changes.
MicrosoftNewSenior Software Engineer - Performance Tooling MicrosoftSenior Software Engineer - Performance ToolingRedmond, WA$119,800–$234,700 / yearWe own inference performance of OpenAI and other state of the art large language model (LLM) models and work directly with OpenAI on the models hosted on the Azure OpenAI service serving some of the largest workloads on the planet with trillions of inferences per day in major Microsoft products, including Office, Windows, Bing, SQL Server, and Dynamics. Masters Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C++, or PythonOR Bachelors Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C++, or Python.
System OneNewPlant Integrated Analysis Engineer System OnePlant Integrated Analysis EngineerBellevue, WARemote$37–$74 / hourSystem One is seeking a highly capable and motivated Plant Integrated Analysis Engineer to support advanced nuclear reactor development within a sodium-cooled reactor program. This is a highly technical role working cross-functionally with safety, I&C, and design engineering teams to model, analyze, and validate complex plant systems.
MicrosoftNewPrincipal Software Engineer - CoreAI MicrosoftPrincipal Software Engineer - CoreAIRedmond, WA$139,900–$274,800 / yearThere is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $188,000 - $304,200 per year. Bachelors Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or PythonOR equivalent experience.
Pinnacle Technical ResourcesSoftware Engineer II Pinnacle Technical ResourcesSoftware Engineer IISeattle,, Washington$60–$65 / hourContractorThe specific compensation for this position will be determined by a number of factors, including the scope, complexity and location of the role as well as the cost of labor in the market; the skills, education, training, credentials and experience of the candidate; and other conditions of employment. Successfully placed or hired candidates would only be asked for banking details after accepting an offer from us during our official onboarding processes as part of payroll setup.
MicrosoftNewPrincipal Software Engineer, Experimentation Platform - CoreAI MicrosoftPrincipal Software Engineer, Experimentation Platform - CoreAIRedmond, WA$139,900–$274,800 / yearMaster’s Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR Bachelor’s Degree in Computer Science or related technical field AND 12+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. Lead cross-team collaboration to identify dependencies, negotiate delivery schedules, drive alignment across partner teams, and ensure proper end-to-end testing, live-site coverage, scalability and performance before going live.
Butler Aerospace and DefenseQuality Engineer Level 3 Butler Aerospace and DefenseQuality Engineer Level 3Redmond, WAExceptional interpersonal and communication skills with the ability to effectively establish positive working relationships with various operational groups, all levels of employees, suppliers, and customers. Specialist, Quality Engineer works under general supervision and may be responsible for entire projects or processes providing guidance, coaching, training, and delegation to other employees within the job area.
Davis Wire CorporationElectrical Engineer Davis Wire CorporationElectrical EngineerKent, WAHistorically talented at restoring distressed companies, Heico strategically targets acquisitions that will complement its ever-growing portfolio of companies in manufacturing, construction, and industrial services. The employee is occasionally required to use hands to finger, handle or feel and reach with hands and arms, lift and/or carry up to 50 pounds, balance, bend, stoop or kneel, climb, push/pull and squat, or crouch.
Gables Search GroupNewPower Electronics R&D Engineer Gables Search GroupPower Electronics R&D EngineerSeattle, WA$180,000–$200,000This role is focused on advanced power electronics, power conversion, AC/DC, DC/DC, HVDC/DC, inverter-based systems, and next-generation high-power conversion platforms for advanced infrastructure, data center power, EV charging, charging systems, and energy storage applications. This is an opportunity to join a newly forming R&D team working on real-world, high-power engineering challenges with strong visibility, global collaboration, and meaningful influence over future power conversion platforms.
Pinnacle Technical ResourcesDevOps Engineer III Pinnacle Technical ResourcesDevOps Engineer IIISeattle,, WashingtonRemote$80–$85 / hourContractorCritical objectives within the team are related to each and every service: high uptime/zero downtime (availability), efficiently scaled (up to 1000 requests per second) and performance (sub-second latency) for our customers. The specific compensation for this position will be determined by a number of factors, including the scope, complexity and location of the role as well as the cost of labor in the market; the skills, education, training, credentials and experience of the candidate; and other conditions of employment.
MicrosoftNewPrincipal Software Engineer - Growth (CoreAI) MicrosoftPrincipal Software Engineer - Growth (CoreAI)Redmond, WA$163,000–$296,400 / yearAt this level, impact comes from building repeatable systems and raising the engineering bar: better experiment quality, better telemetry, safer rollouts, and clearer business outcomes — delivered through pragmatic execution and deep technical judgment. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $220,800 - $331,200 per year.
MicrosoftNewPrincipal Software Engineer MicrosoftPrincipal Software EngineerRedmond, WA$139,900–$274,800 / yearMasters Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or PythonOR Bachelors Degree in Computer Science or related technical field AND 12+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $188,000 - $304,200 per year.
MicrosoftNewSoftware Engineer II, Foundry Agents - CoreAI MicrosoftSoftware Engineer II, Foundry Agents - CoreAIRedmond, WA$100,600–$199,000 / yearWithin CoreAI, the Foundry Agents organization is responsible for key ownership areas across the end‑to‑end agent lifecycle: (a) Foundry Agents platform to deploy and run agents securely at enterprise scale with seamless integration with governed tools, (b) model fine‑tuning to train and improve agentic performance, and (c) Foundry observability to generate insights from agentic traces and continuously evaluate and optimize agents. As a Software Engineer II within Foundry Agents, you will contribute to building large‑scale, cloud‑native systems that support the full lifecycle of advanced agentic applications — from secure enterprise deployment and tool integration, to fine‑tuning workflows, to observability and evaluation in production.
MicrosoftNewPrincipal/Senior Software Engineer, Experimentation Platform - CoreAI MicrosoftPrincipal/Senior Software Engineer, Experimentation Platform - CoreAIRedmond, WA$119,800–$234,700 / yearMaster’s Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR Bachelor’s Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $158,400 - $258,000 per year.
MicrosoftNewSenior Software Engineer - Data Platform, AI Infrastructure MicrosoftSenior Software Engineer - Data Platform, AI InfrastructureRedmond, WA$119,800–$234,700 / yearThere is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $158,400 - $258,000 per year. Bachelors Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience.
System OneNewElectrical Engineer System OneElectrical EngineerSeattle, WA$43–$55 / hourThis individual will work closely with FAA engineers and project teams to support communications infrastructure upgrades, equipment installation, system integration, and engineering design activities. Provide engineering support including design development, SIP/IRD preparation, design updates, technical reviews, and coordination activities.
System OneNewI & C Human Factors Engineer System OneI & C Human Factors EngineerBellevue, WARemote$56–$95 / hourThis role focuses on integrating Human Factors Engineering (HFE) into digital control systems and human-system interfaces (HSIs) for next-generation reactor technology. This role supports an advanced nuclear technology program focused on delivering safe, reliable, and innovative energy solutions.
Widenet ConsultingNETWORK ADMIN Widenet ConsultingNETWORK ADMINSeattle, WashingtonContractorIn this mid-level role, you will be responsible for designing, implementing, managing, and troubleshooting enterprise network systems with a primary focus on the Cisco ecosystem. You will work closely with senior engineers and cross-functional teams to ensure network reliability, performance, and security across the organization.
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.