Senior System/Network Administrator – Systems Integration LeidosSenior System/Network Administrator – Systems IntegrationLaurel, MarylandYou will administer Linux, UNIX, and Windows environments; build and maintain virtual and storage environments; configure network components; resolve complex technical problems; and support reliable day-to-day infrastructure operations. August 24, 2026 For 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.
Systems Administration Supervisor / Helpdesk Lead Peraton IncSystems Administration Supervisor / Helpdesk LeadChantilly, VA$112,000–$179,000 / yearPeraton is seeking a Systems Administration Supervisor to oversee the availability, security, and performance of mission-critical systems, while managing daily operations, staff development, and cross-team coordination. As the world's leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies.
Senior System/Network Administrator - Systems Integration Leidos Holdings IncSenior System/Network Administrator - Systems IntegrationLaurel, MD$116,350–$210,325 / yearYou will administer Linux, UNIX, and Windows environments; build and maintain virtual and storage environments; configure network components; resolve complex technical problems; and support reliable day-to-day infrastructure operations. As a Senior System/Network Administrator - Systems Integration, you will bring deep infrastructure experience to both operational administration and complex integration challenges, helping ensure interconnected systems and applications function effectively together.
IT Engineer - Network Administrator System OneIT Engineer - Network AdministratorMerrifield, VARemoteSystem One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. Understanding of networking protocols, devices, firewalls, routers, VPNs, and network monitoring tools.
NewSenior Network Administrator (Secret Clearance #26-156) Strategic Analysis, Inc.Senior Network Administrator (Secret Clearance #26-156)Arlington, VA$120,000–$135,000 / yearAzure AD/Entra ID identity services, including MFA, Conditional Access, SSO, and Azure AD Connect.·Configure and maintain Intune/Endpoint Manager for device compliance, configuration profiles, and Autopilot deployments.·Implement and maintain network and cloud security policies, including firewall rules, DLP, Defender for Office 365, and Zero Trust principles.·Monitor network and system performance using tools such as, PRTG, or; respond to alerts and outages.·Perform root_cause analysis and resolve escalated technical issues across both cloud and on_prem environments.·Support disaster recovery planning, backups, and failover testing.·Maintain accurate documentation including network diagrams, configuration records, and SOPs.·Participate in infrastructure upgrades, cloud migrations, and modernization initiatives.·Collaborate with IT team members to support end users and escalate issues when necessary. This role is responsible for ensuring high availability, security, compliance, and performance across all enterprise systems by managing the physical network systems (switches, firewalls, servers, etc.) as well as Microsoft 365 (Azure AD/Entra ID, Intune, etc.).
Network Engineer / Systems Administrator (SA) CymertekNetwork Engineer / Systems Administrator (SA)Chantilly, VirginiaNetwork Engineer, Systems Administrator, IT Infrastructure Engineer, Network Systems Administrator, Network Administrator, Systems Engineer, Cloud Systems Administrator, Network Operations Engineer, IT Support Engineer, Network Security Engineer, etc. Computer Science, Information Technology, Network Engineering, Systems Engineering, Computer Engineering, Information Systems, Cybersecurity, Electrical Engineering, Data Science, Applied Mathematics, etc.
Systems Administration, Lead Associate Peraton IncSystems Administration, Lead AssociateLandover, MD$86,000–$138,000 / yearPerform regular day-to-day Systems Administration activities such as User Administrations, Disk Management, Package Install, Patch Management, Storage Management, NFS Administration and disaster recovery/fail-over. Additional Responsibilities include: Installing, configuring and maintaining Oracle Sun Server X4 Series, x86 and Red Hat Enterprise Linux (RHEL) including virtualized servers.
NewSystems Administration - E2 Lockheed Martin CorpSystems Administration - E2Springfield, VA$79,300–$147,300 / yearLockheed Martin considers factors such as (but not limited to) scope and responsibilities of the position, candidate''s work experience, education/ training, key skills as well as market(work location) and business considerations when extending an offer. Your responsibilities will include the following: Plans, tests, installs, and integrate new and upgraded versions of the relevant operating systems, third-party software components, and subsystems.
Network & Information Systems Administrator Quantum SpaceNetwork & Information Systems AdministratorRockville, MD$125,000–$155,000 / yearDesign, deploy, secure, and administer enterprise network infrastructure including switches, routers, firewalls, wireless networks, VPNs, Zero Trust Network Access (ZTNA), and software-defined networking (SDN) technologies. In this role, you will combine systems administration, enterprise networking, cybersecurity, and infrastructure management to ensure the availability, security, and performance of mission-critical information systems supporting spacecraft development and business operations.
NewNetwork Administrator Inserso CorporationNetwork AdministratorWashington, DC$70,000–$90,000 / yearMust maintain a state of travel readiness required to take prompt action on support requests which may require local and/or overnight travel to Government locations (Local short notice travel to customer sites is common, extended overnight and air travel is typically less than 5% per year). The Network Administrator reports to a Team Lead and provides IT Field Operations (ITFO) support for 24x7 LANs and associated applications, peripherals, connectivity, and end-users in a Service Desk supported Tier II environment.
Network System Administrator CymertekNetwork System AdministratorReston, VirginiaNetwork Engineer, Systems Administrator, IT Administrator, Network Security Administrator, Infrastructure Administrator, Network Operations Specialist, Cloud Systems Administrator, Network Analyst, Systems Engineer, IT Support Specialist, etc. Computer Science, Information Technology, Network Engineering, Cybersecurity, Systems Administration, Information Systems, Electrical Engineering, Telecommunications, Data Communications, Software Engineering, etc.
Systems & Network Administrator Apogee Engineering LLCSystems & Network AdministratorArlington, VAMinimum Experience: Citizenship: Must be a US citizen Clearance: Must have an active Top Secret security clearance with SCI eligibility and be able to maintain itEducation: Bachelor''s degreeYears of Experience: Three (3) years of experience in the respective technical/professional discipline. The HAF/A10 contract delivers technical, analytical, operational, programmatic, and planning subject-matter expertise to HAF/A10 and its component divisions to advance national security strategic plans, policies, concepts, and initiatives.
Network Administrator Anduril Industries IncNetwork AdministratorReston, VA$146,000–$194,000 / yearThis third-party service provider provides risk-intelligence services that may include analysis of sanctions and watchlists, adverse media, public-record information, and other lawful open-source or commercial data sources. To ensure your safety and help you navigate your job search with confidence, please keep the following critical points in mind: No Financial Requests: Anduril will never solicit payment or demand personal financial details (such as banking information, credit card numbers, or social security numbers) at any stage of our hiring process.
Network Administrator TATITLEK SUPPORT SERVICES, INC.Network AdministratorWashington, DCWhile performing the duties of this job, the employee is regularly required to stand; walk; sit; use hands to finger, handle, or feel objects, tools or controls; reach with hands and arms; climb stairs; balance; stoop, kneel, crouch or crawl; talk or hear. Server Management and Support: 5 year''s experience demonstrating a proficiency in installing, configuring, and maintaining servers, specifically Windows Server and Red Hat Enterprise Linux.
NewSystem Network Administrator with Database Experience Belay TechnologiesSystem Network Administrator with Database ExperienceLaurel, MD$114,000–$164,000 / yearConfigure and manage Linux, UNIX and Windows (or other applicable) operating systems and installs/loads operating system software, troubleshoot, maintain integrity of and configure network components, along with implementing operating systems enhancements to. Several factors influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, education, specific skills and competencies and certifications.
Senior Network Administrator - TS/SCI with Polygraph GD Information TechnologySenior Network Administrator - TS/SCI with PolygraphWashingtonTo ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. Certifications: DoD Manual 8570.01-M at the Information Assurance Technical (lAT) Level II role & Cisco Certified Network Associate (CCNA) minimum requirement; Cisco Certified Network Professional (CCNP) preferred.
Junior Network Administrator (Remote) Terrestris Global SolutionsJunior Network Administrator (Remote)Washington, DCRemoteThis project will provide IT service desk, systems, network, and security operations support for Federal Prison Industries (UNICOR), supporting end users, Microsoft infrastructure, and mission-critical business systems in hybrid work environments. The Junior Network Administrator ensures that all computers and other devices connected to networks, including routers, hubs and switches, are operating correctly.
Junior Network Administrator Terrestris Global SolutionsJunior Network AdministratorWashington, DCRemoteThis project will provide IT service desk, systems, network, and security operations support for Federal Prison Industries (UNICOR), supporting end users, Microsoft infrastructure, and mission-critical business systems in hybrid work environments. The Junior Network Administrator ensures that all computers and other devices connected to networks, including routers, hubs and switches, are operating correctly.
Network Engineer / Administrator (Ts/Sci Clearance Required) NorthHill TechnologyNetwork Engineer / Administrator (Ts/Sci Clearance Required)Springfield, VirginiaProvide support to IT systems including day-to-day operations, monitoring and problem resolution for all of the client/server/storage/network devices, mobile devices, etc. Isolate and resolve hardware and software problems involving the applications, the operating system, the hardware, the communications infrastructure, or any combination therefore.
Intelligence Systems Administration Support TSTCIntelligence Systems Administration SupportWashington, District of ColumbiaTSTC is an award-winning, Woman Owned, HUBZone certified Small Business providing services to federal intelligence, law enforcement, civilian and defense agencies. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information.