NewAssociate, Infrastructure Project Advisory (Construction/Engineering) KPMGAssociate, Infrastructure Project Advisory (Construction/Engineering)Washington, DCKnowledge in various phases of construction including planning and work breakdown structures, pre-construction services, sourcing and procurement of contracts, contract administration, scheduling, cost estimating, quality management, project reporting, and project closeout. If you're looking for a firm with a strong team connection where you can be your whole self, have an impact, advance your skills, deepen your experiences, and have the flexibility and access to constantly find new areas of inspiration and expand your capabilities, then consider a career in Advisory.
System/DevSecOps Engineer NuAxis InnovationsSystem/DevSecOps EngineerWashington DC, DCThis role collaborates with Product Owners, Federal Project Managers (FPMs), Business Analysts, Solution Architects, UX/UI Designers, QA Engineers, and DevSecOps teams to deliver end-to-end solutions across the full software development lifecycle. The Senior Full Stack Developer is responsible for designing, developing, integrating, and supporting secure, scalable, and high-performing enterprise web applications using modern cloud-native technologies.
Sr. Exchange Online (EXO) Administrator (Systems Engineer) System OneSr. Exchange Online (EXO) Administrator (Systems Engineer)Washington, DCManage and maintain our hybrid Exchange environment, including on-premises Exchange Server and Exchange Online (Microsoft 365). • Implement anti-spam, anti-malware, and threat protection using Microsoft Defender for Office 365.
Senior Microsoft Cloud Engineer Systems Plus, Inc.Senior Microsoft Cloud EngineerWashington, DCFull timeThis is a senior Microsoft cloud platform engineering role covering the full Microsoft 365/Azure/security stack: designing and operating M365, Azure, and Microsoft Security services for reliability and scale, while implementing security controls aligned to NIST 800-53, Zero Trust (NIST 800-207), and FedRAMP Moderate. Security operations work spans Defender and Purview for threat protection and data governance, all tied together with formal change management, documentation, and a senior advisory role supporting audits, assessments, and cross-team architecture decisions.
NewHybrid Cloud Engineer ECLAROHybrid Cloud EngineerWashington DC, DCCloud Operations & Reliability: Experience designing highly available systems using Azure-native tools for monitoring, backup, disaster recovery, and cost optimization. Virtualization & Core Infrastructure: Deep expertise in VMware (vSphere, ESXi, NSX, vCenter, SRM) and enterprise compute, storage, networking, and Active Directory.
Lead Systems Engineer LeidosLead Systems EngineerWashington, DC$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. June 22, 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.
NewGeneral Engineer - Electrical T&S Standard Ownership PEPCOGeneral Engineer - Electrical T&S Standard OwnershipWashington, DC$92,000–$126,500We are a Fortune 200 company, 20,000 colleagues strong serving more than 10.7 million customers at six energy companies -- Atlantic City Electric (ACE), Baltimore Gas and Electric (BGE), Commonwealth Edison (ComEd), Delmarva Power & Light (DPL), PECO Energy Company (PECO), and Potomac Electric Power Company (Pepco). (4) Career related experiences is defined as changes in technical job responsibilities and does not have to include a change in department Note: Items (1) and (3) are mutually inclusive, whereby the maximum experience requirement reduction is one(1) year (e.g., in the case of an employee with both a master's degree in Engineering AND a PE license, the minimum experience requirement would be reduced by one (1) year).
NewSenior PBAC Engineer EPAM SystemsSenior PBAC EngineerWashington DC, DCGeneral knowledge of Active Directory (AD) or other LDAP Directory Services, Intrusion Detection, Security Policies / GPOs, Operating System (OS) hardening, Single Sign-on (SSO), Federation (SAML and/or OIDC), Multi-Factor Authentication (MFA), Certificates/Public Key Infrastructure (PKI), Identity Management concepts, Cloud Technology and device authentication a plus. In this role, the Senior IAM Engineer will focus on pBAC / PBAC (Policy-Based Access Control) capabilities, including centralized policy decisioning, distributed policy enforcement integration, attribute/context aggregation, and auditability to meet security and compliance expectations.
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.
Jira Platform Engineer (onsite) System OneJira Platform Engineer (onsite)Washington, DCDesign, implement, and maintain seamless integrations between Jira with other enterprise systems, such as GitLab (source control & CI/CD), and ServiceNow (ITSM), using Okta,REST APIs, webhooks, middleware, and scripting. The DevOps Engineer (specifically Jira Platform Engineer) will serve as the technical owner of our Jira SaaS in government cloud, and is responsible for administering, configuring, and integrating the application within our enterprise technology ecosystem.
NewSr. Windows Server Tower Lead (Solution Engineer) System OneSr. Windows Server Tower Lead (Solution Engineer)Washington, DC$56.23 / hourManage service delivery, including provisioning, patching, vulnerability remediation, and documentation of server environments across multiple platforms and cloud providers. Provide oversight and management support for over 30 Windows engineers responsible for operations, maintenance, and engineering support for the Department of Transportation's Common Operating Environment (COE).
NewSenior Full Stack Engineer (TypeScript, Node.js) EPAM SystemsSenior Full Stack Engineer (TypeScript, Node.js)Washington DC, DCContribute to the development of AI-powered user experiences, such as: evolving native web experiences toward an “AI-native” platform, developing an AI Center (subject to business direction), building AI-driven dashboards (e.g., Digital Advisor for Client Assist use cases). In this role, you will help shape the future of digital experiences by advancing a fully AI-native architecture, including intelligent agents, dynamic user interfaces, and scalable infrastructure.
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.
AI Engineer SamsaraAI EngineerWashington DC, DCYou will collaborate with architects, engineers, and cross-functional stakeholders across Samsara to brainstorm, design, rapidly prototype, and productionalize AI-driven features and capabilities that integrate deeply into real business workflows. Samsara (NYSE: IOT) is the pioneer of the Connected Operations™ Cloud, which is a platform that enables organizations that depend on physical operations to harness Internet of Things (IoT) data to develop actionable insights and improve their operations.
Software Engineer II - Inline Mailflow AbnormalSoftware Engineer II - Inline MailflowWashington DC, DCDesign and implement core components of the SMTP relay harness, including Mail Transfer Agent (MTA) infrastructure, scalability, IP management, encryption, and DMARC support, working from conception through production operation. • Contribute to technical design discussions on how the relay integrates with existing inline products (outbound DLP, behavioral outbound, misdirected email), helping define the architecture of the broader Mail Flow platform.
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 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.
NewSenior Associate, Privileged Access Management Delivery Engineer KPMGSenior Associate, Privileged Access Management Delivery EngineerWashington, DC$95,855–$208,265 / yearImplement and maintain PAM capabilities including privileged credential management, session management, just-in-time access, and endpoint management (EPM)components; implement automated integration across adjacent security solutions (for example: Crowdstrike, SIEM solutions, ServiceNow); automate PAM tasks using scripting and APIs (such as PowerShell, Python, REST, and others) and integrate with enterprise platforms (that is, Active Directory, IdPs, ITSM platforms, SIEM platforms, and more). Hands on experience with Privileged Access Management delivery and engineering, with specific experience using CyberArk On-Prem and SaaS solutions; additional experience with secrets management platforms (that is, Conjur, HashiCorp) and other PAM platforms (such as Delinea, BeyondTrust) preferred.
Staff Software Engineer, Security & Privacy AbnormalStaff Software Engineer, Security & PrivacyWashington DC, DCDistributed systems expert – you bring deep experience designing and operating large-scale distributed systems, and have partnered with security teams to build secure-by-default solutions. Were looking for a distributed systems expert who has worked closely with security teams — someone who can drive Product Security at scale and translate that into clear, executable technical roadmaps.
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.
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.
NewSenior Specialist, Federal Cloud Engineer KPMGSenior Specialist, Federal Cloud EngineerWashington, DCIf you're looking for a firm with a strong team connection where you can be your whole self, have an impact, advance your skills, deepen your experiences, and have the flexibility and access to constantly find new areas of inspiration and expand your capabilities, then consider a career in Advisory. Work in cross-disciplinary teams with KPMG industry professionals to understand client needs and be part of teams developing holistic operational solutions & applications contributing to cloud infrastructure / DevOps capabilities.
NewSpecialist, Federal Cloud Engineer KPMGSpecialist, Federal Cloud EngineerWashington, DCWork in cross-disciplinary teams with KPMG industry professionals to understand client needs and be part of teams developing holistic operational solutions & applications contributing to cloud infrastructure / DevOps capabilities. If you're looking for a firm with a strong team connection where you can be your whole self, have an impact, advance your skills, deepen your experiences, and have the flexibility and access to constantly find new areas of inspiration and expand your capabilities, then consider a career in Advisory.
NewSenior Azure Engineer ASD GLOBALSenior Azure EngineerWashington, DC$90 / hourContractorThe ideal candidate will have extensive experience designing, implementing, and managing secure Azure cloud infrastructure, networking, and DevOps solutions within government cloud environments. Manage Azure Virtual Networks (VNets), Subnets, NSGs, Azure Firewall, Load Balancers, Route Tables, ExpressRoute, and VPN connectivity.
Cloud Architect / Engineer LeidosCloud Architect / EngineerWashington, DC$131,300–$237,350Proven expertise with Generative AI infrastructure, including: Production-ready Retrieval-Augmented Generation (RAG) pipelines, Scalable vector databases (e.g., Pinecone, Weaviate, Milvus, FAISS, or managed services) with indexing, clustering, and optimized retrieval, GPU/TPU compute clusters, managed container orchestration (Kubernetes/EKS/AKS/GKE), and auto-scaling for large language model (LLM) workloads. Demonstrated experience implementing enterprise security and compliance frameworks (SOC 2, ISO 27001, HIPAA, PCI-DSS, CMMC, FedRAMP, etc.), including encryption, threat monitoring, and zero-trust architectures.
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.
VP, Cyber Programs - Remote By Light Professional IT ServicesVP, Cyber Programs - RemoteWashington DC, DCRemoteLeadership skills to develop, organize and execute significant account planning, capture, and opportunity execution activities, including building industry teams, assessing win probability, ensuring execution of customer call plans to shape acquisitions in order to respond to and win business with new and existing customers. This individual will be expected to collaborate with other team members from business development, operational leadership, and Subject Matter Experts (SMEs) to build and execute call plans to position ByLight for successful pursuits and the submission of competitive proposals.
NewPKI & Identity Infrastructure Engineer (FAA Enterprise Services) Concept Solutions LLCPKI & Identity Infrastructure Engineer (FAA Enterprise Services)Washington, DC$80,000–$100,000 / yearWe are seeking a highly skilled Senior PKI & Identity Infrastructure Engineer to serve as a technical authority across enterprise Public Key Infrastructure (PKI), identity services, directory systems, Linux/Windows administration, and secure cryptographic operations. For over 25 years, CS has been a trusted partner for the Federal Aviation Administration (FAA), Department of Homeland Security (DHS), Department of Justice (DOJ), Department of Defense (DoD) and other federal agencies delivering vital IT, security, and project management services.
Cloud Infrastructure Engineer (AWS) Think Tank, Inc.Cloud Infrastructure Engineer (AWS)Washington, DCContractorThis role ensures system availability, scalability, and security while supporting operational continuity and performance optimization. The Cloud Infrastructure Engineer is responsible for managing and optimizing AWS infrastructure supporting FMS-NG.
Senior Infrastructure Engineer MLabsSenior Infrastructure EngineerWashington, DCRemoteBacked by premier investors such as Paradigm and Dragonfly, the organization is building a full-service platform designed to make issuing, managing, and integrating digital dollars seamless for developers, fintechs, and institutional partners. This individual will bring a software engineering mindset to infrastructure by building reusable abstractions, internal services, and developer tooling that reduce cognitive load across the engineering organization.
Cloud Infrastructure Engineer Intertape Polymer Group IncCloud Infrastructure EngineerWashington, DCRemotePosition Purpose: Administer, design, maintain, analyze, and troubleshoot IPG core systems including but not limited to: Cloud, Virtualization, Server, Storage, Network, Endpoints and Directory Services. Strong understanding across cloud and on-premise infrastructure components (server, storage, network, data, and applications) to deliver end-to-end cloud infrastructure, architectures, and designs.
Infrastructure Engineer Electrosoft Services IncInfrastructure EngineerDCThe engineer is responsible for inventory, installation, replacement, troubleshooting, upgrades, preventative maintenance, ticket response, field dispatch, system documentation, and coordination with STIM technical teams, federal stakeholders, OPDIV points of contact, and logistics/inventory staff. This role supports security tools, supporting infrastructure, client computer systems, servers, workstations, switches, KVM/console devices, APC/rack management devices, and related network/security equipment.
Systems Engineer Advanced Cyber Infrastructure ECS Federal LLCSystems Engineer Advanced Cyber InfrastructureDCThe Systems Engineer (Advanced, Cyber Infrastructure) is responsible for supervising the coordination and performance of additions and changes to network hardware and operating systems and attached devices, and participating in planning design, technical review and implementation for new network infrastructure hardware. Provide direct support in the day-to-day operations on network hardware and operating systems including the evaluation of system utilization, monitoring response time and primary support for detection and correction of operational problems.
Senior Infrastructure Engineer, Cloud Security Truebill, Inc.Senior Infrastructure Engineer, Cloud SecurityWashington, DCWe run hundreds of services in production, which enable us to process billions of transactions, consume multiple terabytes of data, and produce millions of logs per day - and our cloud security posture needs to evolve to match that scale. You have 6+ years of hands-on cloud engineering experience, with substantial time spent on cloud security in production - IAM, network architecture, blast-radius reduction, and vulnerability management.
Senior Engineer Core Infrastructure JetBlue Airways CorpSenior Engineer Core InfrastructureDC$105,600–$150,400 / yearMinimum Experience and Qualifications: Bachelors degree in Computer Science, Engineering, or a related technical field; OR demonstrated capability to perform job responsibilities with a combination of a High School Diploma/GED and at least four (4) years of previous relevant work experience. Position Summary: The Senior Core Infrastructure Engineer is focused on ensuring the creation and management of Infrastructure including managing operational stability, performance, and cost-efficiency of our cloud-hosted data infrastructures, serving both internal and external users.
Staff Data Infrastructure Engineer Peregrine Technologies IncStaff Data Infrastructure EngineerWashington$200,000–$275,000 / yearDeep passion for data infrastructure - you care about building systems that are correct, fast, and resilient at scale Thrive on ambiguity and are energized by defining the right solution to hard, open-ended problems Strong technical vision with the ability to translate complex data requirements into clean, durable infrastructure designs Desire to own significant portions of the data stack end-to-end, from ingestion to serving Committed to operational excellence - you build things you're proud to operate. You will architect and build the systems that ingest, store, and serve massive volumes of real-time operational data - enabling our customers to make critical decisions with speed and confidence.
Systems Engineer Intermediate Cyber Infrastructure ECS Federal LLCSystems Engineer Intermediate Cyber InfrastructureDCProvide direct support in the day-to-day operations on network hardware and operating systems, including the evaluation of system utilization, monitoring response time and primary support for detection and correction of operational problems. ECS is seeking an experienced Systems Engineer (Intermediate, Cyber Infrastructure) to work remotely providing infrastructure support for the work performed under this contract for NIH NIAID Enabling and Advancing Technologies (NEAT).
NewForward Deployed Infrastructure Engineer, New Grad - US Government Palantir Technologies IncForward Deployed Infrastructure Engineer, New Grad - US GovernmentWashington, DC$135,000–$145,000 / yearAs such, you'll work closely with forward deployed teams and product teams to participate in sensible, scalable, systems design and share responsibility with them in diagnosing, resolving, and preventing production issues. We're looking for Forward Deployed Infrastructure Engineers who can help us build, operate, and maintain high-performance, scalable, and reliable services for Palantir platforms, products, and deployments.
Senior Infrastructure Engineer (VMware & Cloud) AHU Technologies IncSenior Infrastructure Engineer (VMware & Cloud)Washington, DCBy bridging the gap between on-premises VMware stacks and modern cloud identity through Azure AD (Entra), you will ensure the reliability, scalability, and security of transit-critical technology environments in a fast-paced, mission-driven atmosphere. You will be responsible for the full lifecycle of enterprise virtualization—from drafting complex Bills of Materials (BoM) and designing net-new ESXi clusters to managing high-availability physical security clusters.
Senior IT Infrastructure Engineer Vanda Pharmaceuticals IncSenior IT Infrastructure EngineerDCIf you reside in a state or locality with enacted pay transparency laws, you are entitled to request and receive additional details regarding compensation and benefits. Must be able to perform the essential functions of the position, with or without reasonable accommodation; however, reasonable accommodations will be provided for qualified individuals with disabilities unless doing so would impose undue hardship.
Sr. Infrastructure DevSecOps Systems Engineer ECS Federal LLCSr. Infrastructure DevSecOps Systems EngineerDCProvide direct support in the day-to-day operations on network hardware and operating systems including the evaluation of system utilization, monitoring response time and primary support for detection and correction of operational problems. Participate in planning design, technical review and implementation for new network infrastructure hardware and network operating systems for voice and data communication networks.
NewSenior Directory Infrastructure Engineer Macpower Digital Assets Edge Private LimitedSenior Directory Infrastructure EngineerWashington, DC$157,000–$169,000 / yearThe resource must have a proven track record of designing and managing complex directory services across multiple platforms with particular emphasis on the complete lifecycle management of AD domains. The team is seeking experienced Directory Infrastructure Engineers with extensive expertise in enterprise identity infrastructure, including Active Directory, Entra ID (formerly Azure AD), OKTA Universal Directory, and LDAP environments.
Network Infrastructure Engineer (DevOps) Wynd LabsNetwork Infrastructure Engineer (DevOps)Washington, District of ColumbiaRemoteWe're the team that helps to power and support Grass, a bandwidth-sharing network that lets us operate a massive distributed crawler, giving us unique access to high-quality public web data at global scale. Infrastructure Design and Implementation : Oversee design, configuration, and deployment of networks, servers, network switches, systems, firewalls, and applications.
Infrastructure Engineers (Physical/Virtual/Cloud) Blue Rose Consulting Group, Inc.Infrastructure Engineers (Physical/Virtual/Cloud)Washington, DCFamiliarity with IaaS/PaaS design and FedRAMP-compliant cloud environments (AWS, Azure, OCI). Experience with VMware, hyperconverged infrastructure, Docker/Kubernetes containerization.
Infrastructure Engineer ElectrosoftInfrastructure EngineerWashingtonThe engineer is responsible for inventory, installation, replacement, troubleshooting, upgrades, preventative maintenance, ticket response, field dispatch, system documentation, and coordination with STIM technical teams, federal stakeholders, OPDIV points of contact, and logistics/inventory staff. This role supports security tools, supporting infrastructure, client computer systems, servers, workstations, switches, KVM/console devices, APC/rack management devices, and related network/security equipment.
Senior Cloud Infrastructure Engineer Dragos IncSenior Cloud Infrastructure EngineerDCRemoteExperience with secrets management tools (Hashi Corp Vault, AWS Secrets Manager, Azure Key Vault). Here, you will find a remote-first mission-driven team across North America, Europe, the Middle East, and APAC built on authenticity, transparency, and trust.
Lead Infrastructure Systems Engineer Essnova SolutionsLead Infrastructure Systems EngineerWashington, District of ColumbiaMaintain and upgrade any Data Center assets required to support life cycle, capacity or performance requirements, including servers Data Center Infrastructure) storage devices, server applications, database, middleware and service utilities. Receive and install Data Center assets required to support life cycle, renewal/replenishment, capacity or performance requirements, including servers, storage devices, server applications, network, database, middleware, service utilities.
Cloud Infrastructure Engineer Game Plan TechCloud Infrastructure EngineerWashingtonDesign and Implement Cloud Infrastructure: Design and implement scalable, secure, and cost-effective cloud infrastructure solutions on GCP, adhering to federal security and compliance requirements. Automation and Orchestration: Utilize Terraform and Ansible to automate the provisioning, configuration, and management of cloud resources, ensuring consistency and repeatability.
Compute Infrastructure Engineer, AI and Advanced Computing Center Schmidt SciencesCompute Infrastructure Engineer, AI and Advanced Computing CenterWashington D.C., WashingtonThe initial set of projects will focus on cutting-edge developments in AI, and a successful candidate should have a work portfolio that reflects specific contributions to deployment and management of appropriately-sized heterogeneous compute clusters in a research or commercial environments. These programs support and draw on related Schmidt Sciences engagements, such as the Virtual Institute for Scientific Software (VISS), which seeks to accelerate the pace of scientific discovery through the support and development of high-quality, community-oriented scientific software.
Senior Infrastructure Engineer (VMware & Cloud) AHU TechnologiesSenior Infrastructure Engineer (VMware & Cloud)Washington, District of ColumbiaBy bridging the gap between on-premises VMware stacks and modern cloud identity through Azure AD (Entra), you will ensure the reliability, scalability, and security of transit-critical technology environments in a fast-paced, mission-driven atmosphere. You will be responsible for the full lifecycle of enterprise virtualization—from drafting complex Bills of Materials (BoM) and designing net-new ESXi clusters to managing high-availability physical security clusters.