NewCribl Engineer Expert EMCCribl Engineer ExpertReston, VA$160,000–$180,000 / yearFull timeMust possess the following DoD 8570.01-M certifications or be willing to obtain within 30 days of hire: · Information Assurance Technician (IAT) Level II certification (currently Security+ CE, CCNA-Security, GSEC, SSCP, CySA+, GICSP, or CND). You will shape pipeline strategy, design complex routing and transformation logic, drive platform reliability, mentor senior engineers, and serve as the top technical escalation point for Cribl-related challenges.
NewSoftware Engineer I WR SystemsSoftware Engineer IFairfax, Virginia$74,000–$107,000 / yearClearance Requirement: Ability to obtain and maintain a Secret Clearance Travel Requirements: 10% Location: Fairfax, VA SUMMARY: WR Government Business Solutions has an opportunity for a Software Engineer I to support the research, design, development, integration, and testing of computer software systems in conjunction with hardware product development. Candidates must possess the following knowledge, skills, and experience: Bachelor's degree in Computer Science, Software Engineering, Computer Engineering, Electrical Engineering, or a related technical discipline.
Digital Pathology Field Service Engineer TD SYNNEXDigital Pathology Field Service EngineerWashington, DCWe are looking for highly skilled and customer-focused Field Service Engineers to support our cutting-edge digital pathology systems in clinical environments. Connect with Your Community: Participate in internal, peer-led inclusive communities and activities, including business resource groups, local volunteering events, and more environmental and social initiatives.
Electrical Engineer - (MEP / Design-Build Consulting Engineers) JobotElectrical Engineer - (MEP / Design-Build Consulting Engineers)Vienna, VA$120,000–$170,000 / year8-10+ years of experience in design and specification of lighting systems, power systems, fire alarm systems, telecom/data systems, medium voltage power systems, UPS systems, emergency generator systems, grounding systems, and utility 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.
NewSystems Engineer JobotSystems EngineerArlington, VA$100,000–$110,000 / 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. Their platforms help agencies improve traffic flow, road safety, and air quality, and they support large-scale, high-volume transportation networks worldwide.
Electrical Engineer EIT/PE JobotElectrical Engineer EIT/PEFairfax, VA$90,000–$140,000 / 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. Ideal candidates will have experience with engineering consulting firms, electrical power, lighting, fire alarm, and building systems for institutional and commercial buildings, as well as proficiency in Revit and AutoCAD.
NewSenior Firmware Engineer MicrosoftSenior Firmware EngineerWashington, DC$119,800–$234,700 / yearDoctorate in Electrical Engineering, Computer Engineering, Computer Science, or related field AND 1+ year(s) technical engineering experience OR Masters Degree in Electrical Engineering, Computer Engineering, Computer Science, or related field AND 4+ years technical engineering experience OR Bachelors Degree in Electrical Engineering, Computer Engineering, Computer Science, or related field AND 5+ years technical engineering experience 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 $160,200 - $261,000 per year.
Integration Engineer LeidosIntegration EngineerLorton, VA$73,450–$132,775Supporting the HEITS management team, the selected individual will be responsible for providing services for the design of new sites, IT renovations, cabling, server room space, desktop PC deployments, printers, faxes, phone(s); copiers; data storage, shared drives, and general-purpose applications on HSDN and C-LAN. The Department of Homeland Security (DHS) has a continuing requirement for Homeland Enterprise IT Secure Services and Support (HEITS) for the continued operations and maintenance and evolution of the Homeland Secure Data Network (HSDN) and the Classified Local Area Network (C-LAN).
Senior Software Engineer, Autonomy Behaviors Shield AISenior Software Engineer, Autonomy BehaviorsWashington, DCThe team is responsible for developing autonomous behaviors within Shield AI’s industry-leading mission autonomy software stack and deploying them across a breadth of platforms, including the Anduril Fury, Northrup Grumman Talon, Shield AI V-Bat, and other first and third-party autonomous vehicles. The Autonomy Capabilities team at Shield AI has assembled a diverse team of experts in software, robotics, control systems, optimization, and data analysis to create software solutions that greatly evolve the capabilities of our customers.
Electrical Engineer II (VA) GCR Professional ServicesElectrical Engineer II (VA)Chantilly, Virginia$40–$50 / hourContractorProject Management: Plan and manage electrical engineering projects, including creating project timelines, allocating resources, and coordinating with cross-functional teams. Collaboration: Collaborate with other engineers, technicians, and professionals to integrate electrical systems into larger projects or products.
NewSr Electrical PE JobotSr Electrical PEHerndon, VA$125,000–$175,000 / yearTypical duties include writing technical reports, conducting surveys, performing calculations, overseeing, and completing power, telemetry, and telecommunications designs, conducting research and development, systems integration, testing, hands-on assembly, and PLC programming. Seeking a Sr Electrical Engineer to serve as the electrical discipline team leader for the project, directing other engineers and designers as required, provide electrical design expertise and leadership for the entire project, from initial survey through final inspection.
Senior Telecom Software Engineer (TS/SCI clearance) System OneSenior Telecom Software Engineer (TS/SCI clearance)Herndon, VASupport Linux-based systems supporting telecommunications infrastructure by ensuring high availability, performance, and reliability, supporting environments on CentOS 7 transitioning to Rocky Linux. • Monitor and analyze telecommunications systems, interpret inbound data streams, and utilize packet capture tools like Wireshark and tcpdump to troubleshoot core network issues.
Senior Software Engineer, Autonomous Pilot Integration Shield AISenior Software Engineer, Autonomous Pilot IntegrationWashington, DCCollaboration Across Teams — Work closely with the Autonomy Capabilities team (motion planning, tactics), the Perception team, feature crews, and external partners (platform integrators, vehicle/autopilot control vendors, C2 providers) to deliver and validate mission-critical functionality on time. • Hardware/Software Debugging — Diagnose and resolve integration issues across complex autonomy stacks, payload computers, and embedded systems in lab and field environments — including memory, CPU, and timing profiling under operationally-representative loads.
Sr. GIS Solution Engineer - Public Safety EsriSr. GIS Solution Engineer - Public SafetyVienna, VA$98,592–$173,576 / yearCompensation decisions and the base range for this role take into account many factors including but not limited to skill sets; experience and training; licensure and certifications; and other business and organizational needs. Broad knowledge of ArcGIS from an IT context (such as hardware, storage, security, networking, web services, virtualization, cloud computing).
Senior Engineer, Software - Autonomous Aircraft Integration Shield AISenior Engineer, Software - Autonomous Aircraft IntegrationWashington, DCFlight Data Capture & Analysis — Manage data collection during missions and post-test analysis, working with autonomy engineers to refine behaviors and identify improvements. • Collaboration Across Teams — Work closely with autonomy, GNC, systems, and test teams to ensure mission-critical functionality is delivered on time and validated thoroughly.
Software Engineer (C# .NET Framework/SQL Server) SarnovaSoftware Engineer (C# .NET Framework/SQL Server)Washington DC, DCThe position is well suited for an engineer who enjoys working with complex systems, troubleshooting production issues, and contributing to the continued evolution and sustainability of the platform. This role focuses on supporting, enhancing, and progressively modernizing enterprise and legacy applications using C#, NET Framework, and SQL Server.
Lead Systems Engineer - AWS Cloud System OneLead Systems Engineer - AWS CloudReston, VA$109.05 / hourMentor junior and senior team members, install, tune, upgrade, troubleshoot, and maintain all relevant computer systems including OS administration, user management, and networking. Implement risk and opportunity management plans, assess risks, develop mitigation and disaster recovery plans, and oversee engineering project planning and execution.
NewVirtualization Engineer System OneVirtualization EngineerSpringfield, VA$175,000 / yearConfigure and troubleshoot NetApp Storage – ONTAP, perform firmware and OS upgrades, and utilize storage management tools like OnCommand Unified Manager and Performance Manager. Design, implement, and support VMware vSphere, vCenters, and Microsoft Active Directory Forests with JIT administration to support multiple PKI systems.
Staff Machine Learning Engineer SamsaraStaff Machine Learning EngineerWashington DC, DCRemoteYou believe customers are more than a number: Samsara engineers enjoy a rare closeness to the end user and you will have the opportunity to participate in customer interviews, collaborate with customer success and product managers, and use metrics to ensure our work is translating into better customer outcomes. • You want to impact the industries that run our world: The software, firmware, and hardware you build will result in real-world impact—helping to keep the lights on, get food into grocery stores, and most importantly, ensure workers return home safely.
Senior Software Engineer - Route Execution SamsaraSenior Software Engineer - Route ExecutionWashington DC, DCRemoteYou believe customers are more than a number: Samsara engineers enjoy a rare closeness to the end user and you will have the opportunity to participate in customer interviews, collaborate with customer success and product managers, and use metrics to ensure our work is translating into better customer outcomes. • You want to impact the industries that run our world: The software, firmware, and hardware you build will result in real-world impact—helping to keep the lights on, get food into grocery stores, and most importantly, ensure workers return home safely.
NewAI/ML Engineer System OneAI/ML EngineerMcLean, VARemoteThe ideal candidate combines strong Python software engineering skills with hands-on experience building scalable AI/ML applications using large, complex structured and unstructured datasets. We are seeking an experienced AI/ML Engineer to design, develop, and deploy production-ready artificial intelligence and machine learning solutions supporting mission-critical investigative and operational challenges.
Senior Software Engineer II - AI Tooling and Interfaces DoubleVerifySenior Software Engineer II - AI Tooling and InterfacesWashington DC, DC$107,000–$193,000 / yearSoftware Engineer II in AI Tooling and Interfaces, youll design and build systems purpose-built for AI agents, automations, and decisioning engines that drive real outcomes for our clients and internal teams. If you enjoy turning high-volume data into clean, powerful systems—and you want your work to drive real business outcomes rather than just dashboards—this role puts you right at the center of the action.
Senior Data Engineer - Agentic AI Engineering BoomiSenior Data Engineer - Agentic AI EngineeringWashington DC, DCThis role focuses on building and operating scalable, high-quality data infrastructure that powers agentic AI systems, including LLM-based agents, multi-agent workflows, and tool-using AI systems. • Architect and build scalable, secure, and observable data infrastructure to power LLM-based agents, multi-agent systems, and tool-using AI workflows.
Senior Systems Engineer LeidosSenior Systems EngineerLaurel, MD$131,300–$237,350This may include decomposing features into workable stories, prioritizing or reprioritizing items in the backlog for upcoming sprints, refining acceptance criteria and complexity estimates or removing tickets that are no longer relevant. Leidos has an exciting opening for you, as our next TS/SCI cleared Senior Systems Engineer, to play a critical role with design, engineering, development and deployment of software supporting the DIA-NMEC (National Media Exploitation Center) DOMEX Technology Platform (DTP).
Model-Based Systems Engineer LeidosModel-Based Systems EngineerWashington, DC$69,550–$125,725Bachelor’s degree in engineering or related field with 2+ years of prior relevant experience or a master’s degree with at least a year experience in one of these areas: systems engineering, software engineering, test engineering or related field. March 30, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Senior Model Based Systems Engineer LeidosSenior Model Based Systems EngineerWoodbridge, VA$107,900–$195,050Bachelor’s degree in engineering or related field with 8+ years of prior relevant experience or a master’s degree with 6+ years of experience in one of these areas: systems engineering, software engineering, test engineering or related field. Your role will directly support our diverse portfolio of programs through a combination of requirements and design architecture analysis; MBSE Model development; mentoring junior engineers and assisting technical leadership develop briefing material.
Senior Network Engineer LeidosSenior Network EngineerAccokeek, MD$107,900–$195,050The Senior Systems Engineer will provide technical leadership and support in the areas of IT planning, solution specification/design, implementation and target architecture development for the AFNCR Consolidated Communication Center (CCC). If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
NewSr Electrical Engineer (Secret Clearance) System OneSr Electrical Engineer (Secret Clearance)Chantilly, VA$110,000–$170,000 / year10+ years of experience in design and specification of: lighting systems, power systems, fire alarm systems, telcom/data systems, medium voltage power systems, UPS systems, emergency generator systems, grounding systems, and utility systems. Perform calculations, select equipment, and design systems (lighting, power, fire alarm, and telcom/data systems).
Data Storage Engineer LeidosData Storage EngineerPoolesville, MD$107,900–$195,050If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com. Extensive experience administering enterprise-level data storage systems (Dell Storage Center, Dell Compellent, and Data Domain preferred) with a demonstrated understanding of the following services and technologies.
NewSystem Engineer JobotSystem EngineerAlexandria, VA$95,000–$110,000 / 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. We are a leading provider of intelligent transportation and mobility solutions, delivering innovative software, systems, and services that help organizations manage complex transportation infrastructure more efficiently, safely, and sustainably.
NewSr. Software Engineer JobotSr. Software EngineerGaithersburg, MD$140,000–$165,000 / yearWith deep expertise in cloud-first architectures, automation, DevSecOps, virtualization, reliability engineering, and large-scale systems integration, we help organizations modernize infrastructure, improve operational efficiency, and support mission-critical environments where performance, security, and resiliency are essential. Our teams partner closely with customers to deliver innovative solutions across cloud strategy, cybersecurity, systems integration, data engineering, machine learning, AI, disaster recovery, and enterprise infrastructure initiatives.
NewJunior Systems Engineer (Linux/Windows/Clearance) JobotJunior Systems Engineer (Linux/Windows/Clearance)Manassas, VA$80,000–$100,000 / 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. Integrating and testing software deliveries, verifying bug fixes, and performing regression testing across multiple hardware and operating system configurations.
NewSystems Engineer (Intelligent Transportation System Industry Exp Required) JobotSystems Engineer (Intelligent Transportation System Industry Exp Required)Alexandria, VA$100,000–$110,000 / 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 ideal candidate has experience supporting Linux and Windows environments, containerized applications, and production systems while working directly with customers and internal engineering teams.
Software Systems Integration Engineer - RHEL/Windows - Secret Clearance Required JobotSoftware Systems Integration Engineer - RHEL/Windows - Secret Clearance RequiredManassas, VA$90,000–$115,000 / 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. Integrating and testing software deliveries, verifying bug fixes, and performing regression testing across multiple hardware and operating system configurations.
Solution Architect / Engineer LeidosSolution Architect / EngineerCheltenham, MD$131,300–$237,350This role combines high level architectural design with deep technical implementation, requiring an individual who can define target-state architectures, build and optimize solutions, and guide modernization across hybrid and multi cloud environments. Proven hands-on experience designing and implementing solutions across hybrid/multi-cloud environments (AWS and Azure strongly preferred), on-premises data centers, virtualization platforms, and containerized workloads (e.g., Kubernetes/Docker).
Senior Systems Engineer Concurrent Engineering Lead LeidosSenior Systems Engineer Concurrent Engineering LeadGaithersburg, MD$107,900–$195,050The Terminal Flight Data Management (TFDM) program is a Federal Aviation Administration’s (FAA) NextGen program based on airport surface management that provides efficiencies for both the airport surface and terminal airspace by providing a new and comprehensive integrated surface traffic control and management system. Stakeholders will have a shared awareness of flights on the ground and in the air, the ability to exchange data electronically, with the goal of a continuous real-time picture of traffic volume and airport resources, making flights more efficient from gate to gate.
Systems Engineer LeidosSystems EngineerTemple Hills, MD$107,900–$195,050If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com. • The candidate should be a proactive leader and team player with strong communication, management, analytical, and problem solving skills; proven ability to thrive in environments that constantly embraces new technology.
Information System Security Engineer NASInformation System Security EngineerWoodbridge, VA$150,000–$185,000 / yearFull timeArchitectural & Enterprise CDS Gatekeeping: Serve as the principal technical reviewer for DTRA organizations onboarding onto pre-accredited Enterprise CDS (ECDS) and Raise the Bar (RTB) compliant Cloud CDS providers (e.g., AWS/Azure CDS). Communication: Exceptional verbal and written communication skills, with proven experience presenting complex risk profiles, technical trade-offs, and out-of-the-box mitigations directly to senior government leadership (GS-15/O-6 level).
Hardware Design Engineer Science Applications International CorpHardware Design EngineerCollege Park, MD$160,001–$200,000 / yearOur robust portfolio of offerings across the defense, space, intelligence, and civilian markets includes secure high-end solutions in mission IT, enterprise IT, engineering services, and professional services. Bachelor's degree in Electrical Engineering or Computer Engineering with 5 years or more experience; Masters and 3 years or more experience; PhD and 0 years related experience.
Electrical Engineer Level 3 - Simulation Hardware - Sterling Northrop Grumman CorpElectrical Engineer Level 3 - Simulation Hardware - SterlingSterling, VA$114,000–$171,000 / yearThe engineer candidate will work with your team to define requirements based upon the program's needs, select hardware to simulate SV component data and control interfaces, define testbed harness connections to avionics units, the interfaces to simulate SV components, as well as test and integrate the completed Flatsat System with the avionics units before delivery. In this role, the candidate will interface with spacecraft subsystem design engineers, flight software engineers, systems engineers, simulation software engineers, parts procurement, and assembly technicians, in order to provide support for various Flatsat simulation tasks as required.
Hardware Design Engineer*- Columbia, MD Rohde & Schwarz GmbH & Co KGHardware Design Engineer*- Columbia, MDColumbia, MDThe position requires a minimum of a Master's degree in Electrical Engineering, or a related field, and 1 years' experience in the job offered or any related occupation, to include 1 years' experience working with IC Design; 1 years' experience working with CMOS/BiCMOS analog design: low noise high linearity designs, high performance digital to analog converters, analog to digital converts, line drivers, mixed analog/custom digital circuits. 1 years' experience with designing analog integrated circuits for a complex mixed signal SoCs from creation into production; and 1 years' experience with RF engineering, specifically transmission lines theory, matching, RF device models.
NewPCB Hardware Design Engineer, Senior Booz Allen HamiltonPCB Hardware Design Engineer, SeniorWashington, DC$77,600–$176,000 / yearYou will translate system and subsystem requirements into board-level specifications, lead schematic capture and multilayer PCB layout, and guide designs through signal and power integrity analysis, design reviews, fabrication, assembly, and test. As an Electrical Engineer on our team, you will own the circuit board design and layout effort for an advanced defense capability program, working alongside Booz Allen colleagues, other support contractors, and U.S. Navy personnel.
Hardware Engineer â Munition System head\-huntress.comHardware Engineer â Munition SystemWashingtonWe expect our engineers to confidently drive key electrical decisions, document them clearly, and stand behind their designs through rigorous qualification and field validation. Work Location: Following the initial training month, this role is permanently Onsite out of your choice of San Francisco, CA , Los Angeles, CA , or Washington, DC .
Hardware Engineer - Munition System Supplied TalentHardware Engineer - Munition SystemWashington, DCCandidate must be comfortable completing an initial 1‑month onsite training period in Kearneysville, WV , after which they will relocate back to work from San Francisco, Los Angeles, or Washington, DC . Schematic & PCB Design — Lead schematic capture and multilayer PCB layout for mixed‑signal, low‑power, and RF‑adjacent systems.
Hardware Engineer Nightwing Intelligence SolutionsHardware EngineerSterling, Virginia$122,000–$253,000 / yearThe HWE supports system infrastructure build-outs (cage builds, overhead installations, rack and stack), cable termination and testing, maintenance work, monitoring and responding to mechanical, electrical, fire protection, telecom, and security systems. The HWE performs daily system data center rounds to monitor the data center infrastructure, coordinate response to operational incidents, and partner with other providers to rapidly resolve issues that impact service availability.
NewAntenna Systems & Hardware Engineer Johns Hopkins Applied Physics LaboratoryAntenna Systems & Hardware EngineerLaurel, MarylandFull timeDevelop and apply antenna and RF aperture modeling and simulation tools (e.g., full-wave EM solvers, array analysis codes, custom MATLAB/Python tools) to design, analyze, and trade antenna and array performance across a variety of operational scenarios. Plan, execute, and analyze antenna and RF aperture measurements in laboratory, chamber, and field test environments, including radiation pattern measurements, gain and efficiency, impedance, polarization characteristics, and array calibration.
Senior Hardware Engineer Curtiss-WrightSenior Hardware EngineerAshburn, VirginiaThis role involves designing and developing complex electrical boards , including single board computers (SBC), FPGA, switch, and input/output cards in 3U and 6U VPX form factors, as well as custom form-factor systems incorporating software, firmware, and hardware security elements. The ideal candidate brings strong expertise in electronic components, integrated circuitry, mechanical systems, and DSP systems, with demonstrated experience solving complex technical challenges across hardware design, testing, and production phases.
Lead Hardware Engineer - Onsite position Curtiss-Wright CorpLead Hardware Engineer - Onsite positionAshburn, VA$108,900–$150,000 / yearThis role involves leading the design and development of complex electrical boards, including single board computers (SBC), FPGA, switch, and input/output cards in 3U and 6U VPX form factors, as well as custom form-factor systems incorporating software, firmware, and hardware security elements. The ideal candidate brings extensive expertise in electronic components, integrated circuitry, mechanical systems, and DSP systems, with a proven ability to provide technical leadership and deliver complex hardware solutions through design, testing, qualification, and production phases.
Principal Hardware Engineer Curtiss-Wright CorpPrincipal Hardware EngineerAshburn, VA$144,100–$190,000 / yearThis role involves planning, leading, and designing complex electrical boards, including single board computers (SBC), FPGA, switch, and input/output cards in 3U and 6U VPX form factors; and custom form-factor systems incorporating software, firmware, and hardware security elements. The ideal candidate brings deep expertise in electronic components, integrated circuitry, mechanical systems, and DSP systems, and has a proven track record of solving complex technical challenges across design, testing, and production phases.
Test Hardware Design Engineer X Energy LLCTest Hardware Design EngineerRockville, MD$95,000–$120,000 / yearThis role is responsible for the engineering design, integration, and commissioning of specialized testbeds, test setups, tooling, and handling equipment used for testing prototype designs to reduce risk and advance technology readiness level (TRL). Develop innovative mechanical solutions to refine and deploy concepts, technologies, and designs associated with X-energy developed reactors, including pressure vessels and piping, reactor internals, nuclear fuel, and high temperature materials such as graphite.