NewLinux Administrators (TS/SCI) - Panama Day Shift aqua ITLinux Administrators (TS/SCI) - Panama Day ShiftChantilly, VirginiaTwo or more years of experience with Amazon Web Services (S3 Buckets, EC2, Reserved Instances, etc.) • Familiar with System Engineering documentation creation (VDDs, network diagrams, data flows, etc.) • Experience working with Agile Team Collaboration tools such as (Jira, Confluence, RocketChat) • Strong Linux background and familiarity with best practices of infrastructure management PREFERRED QUALIFICATIONS: • Experience with Amazon Web Services technical performance versus cost management • Experience with cloud-based architectures • Familiar with cross domain architectures at various levels • Experience with automated testing and monitoring • Experience with Engineering Review Boards and Change Management .
Senior Infrastructure and Systems Administrator PeratonSenior Infrastructure and Systems AdministratorCollege Park, Maryland$112,000–$179,000 / yearFull timeMinimum of 6+ years of experience with a Bachelor’s degree, 4+ years of experience with a Master’s degree, or a PhD in Computer Science, Computer Engineering, Information Systems, Cybersecurity, or a related technical field. This position will work closely with the Maryland-based customer, researchers, engineers, subcontractors, and program leadership to ensure mission systems are reliable, secure, compliant, and ready to support advanced R&D efforts.
Networking Security Engineer II CACI International IncNetworking Security Engineer IIColumbia, MD$120,800–$265,800 / yearPay Range: There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Bachelor's degree in Communications Engineering, Computer Engineering, Computer Science, Electrical Engineering, Information Systems, Mathematics, or related disciple from an accredited college or university is required.
Senior Virtualization Engineer Absolute Business Solutions CorpSenior Virtualization EngineerAndrews Air Force Base, MD$90,000–$180,000 / yearYou will collaborate with engineering, cybersecurity, network, infrastructure, operations, and program teams to develop secure, reliable technical solutions that meet mission, operational, and cybersecurity requirements. A bachelor’s degree with a minimum of 12 years of related experience; a master’s degree with a minimum of 10 years of related experience; or additional relevant experience that may be accepted in lieu of a degree.
Senior Exchange Administrator LeidosSenior Exchange AdministratorAlexandria, VA$92,300–$166,850 / yearDuties include conducting technical planning for hardware and software upgrades, review of implementation and upgrade guides, documentation updates to support Risk Management Framework (RMF) Authority to Operate (ATO) and extension requests. This role requires an individual with expertise managing on-prem Microsoft Exchange solutions in small, medium, and large enterprise environments including physical and virtual server technologies and managing Microsoft M365 Exchange Online in a hybrid environment.
SharePoint Farm Administrator LeidosSharePoint Farm AdministratorSuitland, MD$107,900–$195,050 / yearProficient at IIS Management, Server Administration, Active Directory Operation (including LDAP queries), DNS Operations, SMTP, Network Load Balancing (NLB), Event Viewer and Performance Monitor, Powershell scripting and providing SharePoint support and developer training. In this role you will provide SharePoint Operations and Maintenance for Collaborative Services, Automated Business Processes, and related applications (currently SharePoint based) to fulfill the Hopper Information Services Center (ISC), Operations Department (ISC-N3), and Services Division (ISC-N33) SharePoint mission requirements.
Citrix Infrastructure Administrator LeidosCitrix Infrastructure AdministratorArlington, VA$73,450–$132,775 / yearThe DISA CESO ITSS team provides network operations and cyber defense support to the Defense Information Systems Agency (DISA), enabling secure and reliable communications for the Department of Defense (DoD) and Combatant Commands (COCOMs). 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 .
Cloud Engineer LeidosCloud EngineerArlington, VA$87,100–$157,450If 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 25, 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.
Active Directory Architect / Engineer LeidosActive Directory Architect / EngineerSilver Spring, MD$131,300–$237,350Design, deploy, upgrade, and administer Active Directory Domain Services, including domain controllers, forests, domains, trusts, and replication topologies (i.e. Manage and optimize Group Policy Objects (GPOs), OU structures, and security baselines; including object management through bulk operations and automation, Troubleshoot and resolve complex AD-related issues, including authentication failures, replication problems, DNS issues, and Kerberos/NTLM problems, Plan and execute Active Directory migrations, consolidations, and upgrades (of both underlying server infrastructure and overall forest/domain functional levels), Develop and maintain disaster recovery, backup, and restore procedures for AD environments (including AD Recycle Bin and authoritative restores), Monitor AD health and performance using tools such as Microsoft System Center, Azure Monitor, or third-party solutions). Deep expertise in designing, deploying, upgrading, and administering Microsoft Active Directory Domain Services (AD DS), including domain controllers, multi-domain/forest architectures, trusts, replication topologies, Group Policy Objects (GPOs), OU design, and security baselines.
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.
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.
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 Administrator - Evening Shift LeidosNetwork Administrator - Evening ShiftArlington, VirginiaSeptember 1, 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. This program is establishing a modern secure web service (SWS) operation as part of a state-of-the-art, highly automated platform capable of supporting a rapidly expanding customer population.
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.
Senior Network Administrator Chaos IncSenior Network AdministratorWashington, DC$120,000–$180,000 / yearThis is a hands-on technical role at the core of our IT and security operations; you''ll build, configure, and maintain routers, switches, firewalls, and wireless infrastructure, monitor network performance and availability, troubleshoot connectivity issues, and ensure our network remains resilient, secure, and mission-ready. Manage network security controls including firewall rule sets, VPN configurations, access control lists, and network-layer inspection (proxy, SSL inspection, mail gateway) in coordination with cybersecurity teams.
Network Administrator PeratonNetwork AdministratorWashington, D.C.$104,000–$166,000 / yearFull timeResponsibilities: As a Tier 2 Network Administrator, you'll be challenged with enterprise support problems where you will coordinate with the Network Operations Center and other Operational staff to address break fix, configuration update, schedule add moves and changes and technology upgrades and installs for Network routers and switches. A Bachelor's degree with 5+ years of experience OR a Master's degree with 3+ years of experience OR a PhD with 1+ years of experience; an additional 4 years of experience maybe considered in lieu of a degree requirement.
Senior Network and Computer Systems Administrator DecisionPoint | CortekSenior Network and Computer Systems AdministratorArlington, VirginiaFull timeOverview: DecisionPoint Corporation is seeking an experienced Senior Network and Computer Systems Administrator to support the Department of Homeland Security (DHS), Cybersecurity and Infrastructure Security Agency (CISA), Critical Infrastructure Information Sharing Environment (CI-ISE ) and Homeland Security Information Network-Critical Infrastructure (HSIN-CI) Program Support Services. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor's legal duty to furnish information.
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.
NewNetwork/Systems Administrator Pivotal SolutionsNetwork/Systems AdministratorLaytonsville, MarylandThe Network/Systems Administrator is responsible for diagnosing and troubleshooting advanced server, networking, and cloud services issues. Create, test, modify, and deploy scripts using PowerShell, Bat files, and Kaseya’s proprietary scripting engine.
NewServer Patching Administrator Macpower Digital Assets Edge Private LimitedServer Patching AdministratorWashington, DC$115,000–$124,000 / yearThe ideal candidate has 11+ years of professional work experience, including 8+ years of advanced Server system administration, operational support, and problem resolution for mixed Windows/Linux/Unix Server environments, 8+ years of System administration experience, and knowledge of VMware, Hyper-V, and administration of virtual servers, and 8 years of Server Patching and Software deployment experience through Tanium, SCCM, Intune, Ivanti or similar tools. Education and Experience Requirements: Minimum 10+ years of systems engineering/administration experience in Windows/Linux/Unix Server environments Operating Systems, including Windows Server installation, operations, administration, and maintenance of physical and virtualized servers in an enterprise environment.