NewSr Linux Systems Administrator Twenty80 LLCSr Linux Systems AdministratorAnnapolis, MDIn this role, you'll work within a large software development environment, ensuring enterprise systems remain secure, reliable, and highly available while implementing automated infrastructure to support next-generation malware analysis, cyber orchestration, and data enrichment capabilities. Network Performance: Strong ability to diagnose connectivity issues, resolve critical network outages, and optimize network performance by eliminating data bottlenecks.
Senior System Administrator III Varada ConsultingSenior System Administrator IIILinthicum, MDRequired Experience: Bachelor’s degree in a technical discipline and 15 years’ experience as a System Administrator, OR High school diploma and 20 years’ experience as a System Administrator. Ability to demonstrate cyber/IT related experience with attention to detail, customer service, oral and written communication, and problem solving.
System Administrator System OneSystem AdministratorAnnapolis Junction, MD$150,000 / yearThis role is ideal for someone who enjoys hands-on troubleshooting, optimizing system performance, and working closely with engineering and operations teams to keep essential infrastructure reliable and available. This team includes professionals who specialize in platform , network , and storage engineering—but everyone is expected to contribute to core Linux system administration and operational sustainment work.
NewSharePoint Developer/Administrator (Intermediate) SKY PartnersSharePoint Developer/Administrator (Intermediate)DC$55–$56 / hourContractorREQUIREMENTS: The candidate shall possess the knowledge and skills set forth in the Technical Services BOA, Section 3.12.2.1 for labor category Intermediate SharePoint Administrator/Developer, and demonstrate the following: • Develop SharePoint Online solutions using out-of-the-box tools and custom coding (HTML, CSS, JavaScript, TypeScript, React JS, SPFx, Handlebars, PowerShell, Bootstrap, Fluent UI, PnP libraries). 2. Development – Build SPO sites, pages, and SPFx web parts; develop reusable components; build PowerApps/Power Automate solutions; support the Linux–SPO integration (scripting, service principal accounts, Graph API).
RHEL Administrator Above and Beyond Talent AcquisitionRHEL AdministratorAnnapolis Junction, MD$80,000–$120,000 / yearFull timePerformance Objectives / What you'll be doing: Administer, support, and optimize RHEL-based server infrastructure (RHEL 7.x/8.x/9.x), including installation, configuration, upgrades, and patch management. Automate routine tasks and system management using Ansible Automation Platform (AAP), scripting languages (Bash, Python, etc.), and other tools to improve operational efficiency.
Cyber and Information Systems Security Analyst/ISSO Johns Hopkins Applied Physics Laboratory (APL)Cyber and Information Systems Security Analyst/ISSOLaurel, MD$105,000–$290,000 / yearHave a strong working knowledge of the National Industrial Security Program Operating Manual (NISPOM), Joint Special Access Program Implementation Guide (JSIG), Intelligence Community Directives (ICDs), Risk Management Framework (RMF), and other policy requirements. We are ranked as one of Computerworld's Top Places to Work in IT 8 years running, and we are seeking a Cyber and Information Systems Security Analyst that will play an instrumental role in the design and operation of national security systems.
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.
Dialysis Facility Administrator U.S. Renal CareDialysis Facility AdministratorBowie, MDContinuously monitor to ensure that a safe and sanitary physical environment is maintained throughout the facility; that all equipment is maintained and functions properly; and that adequate and appropriate inventory levels of all supplies are available and used correctly. STAFF DEVELOPMENT/ RETENTION Ensure all staff meet required qualifications for position held and perform duties within limitations established by and in accordance with company policy/procedures, health care professionals practice acts, applicable state and federal laws and regulations.
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.
Network Administrator Above and Beyond Talent AcquisitionNetwork AdministratorAnnapolis Junction, MD$90,000–$100,000 / yearFull timeTroubleshoot and resolve network issues using firewall logs, switch packet capture tools; engaging with cross-functional teams to leverage support and collaboration when necessary. Managing, monitoring, maintaining, and securing networks and tenant network segments that integrate the transport of networks and data.
Systems Administrator AmentumSystems AdministratorHanover, MarylandThe Windows Systems Administrator will be involved in the testing, preparation and deployment of Active Directory GPO’s and RBAC as well as automated server and workstation imaging and patching utilizing Windows MCM. responsible for completing all training requirements and fulfilling all self-aid/buddy aid responsibilities, participating in emergency response tasks and serving on safety committees and teams.
Systems Administrator Amentum Services IncSystems AdministratorHanover, MD$165,000–$175,000 / yearThe Windows Systems Administrator will be involved in the testing, preparation and deployment of Active Directory GPO's and RBAC as well as automated server and workstation imaging and patching utilizing Windows MCM. responsible for completing all training requirements and fulfilling all self-aid/buddy aid responsibilities, participating in emergency response tasks and serving on safety committees and teams.
Sr. Windows Systems Administrator Axient LLCSr. Windows Systems AdministratorColumbia, MD$145,000–$165,000 / yearAstrion has an exciting opportunity for a highly experienced Senior Windows Administrator to build, secure, and sustain the Windows Server estate, the Windows 11 workstation fleet, and the Active Directory and Windows network services that run across three or more isolated classified networks supporting Department of Defense/Department of War (DoD/DoW) environments in Columbia, MD. The ideal candidate brings deep Windows Server and Active Directory expertise, extensive experience operating inside closed and air-gapped classified enclaves, and a proven record of building and maintaining systems in compliance with Risk Management Framework (RMF), DoD STIG, and Comply-to-Connect (C2C) requirements.
Sr. Windows Systems Administrator TS/SCI Poly LeidosSr. Windows Systems Administrator TS/SCI PolyAnnapolis Junction, MarylandThis role also includes supporting server, router, and firewall configuration, as well as performing security management and application performance optimization activities in an environment made up of VMware server hosts, Windows and Linux guest servers, and Virtual Desktop Infrastructure (VDI). • Managing Information Assurance Vulnerability Alerts (IAVAs) and system security scanning in accordance with applicable System Security Plans, ensuring vulnerabilities are identified and remediated quickly and accurately.
Sr. Window Systems Administrator Amyx, Inc.Sr. Window Systems AdministratorFt. Meade, MarylandFull timeTechnology used: Windows Server (2019 and newer), Active Directory, Citrix, Forefront Identity Manager, MS Identity Manager, Microsoft IIS, HyperVisor, VMWare, NetScaler, ACAS, Splunk, HBSS, Trellix, MS Defender, ESPS, Veritas Clustering, MS Cluster Server, Ansible, PowerShell, Javascript, backup software, Network Attached Storage (NAS), Storage Area Networks (SANs), ticketing system, Qualifications: Required: Must have a minimum of five (5) years of relevant Windows Server System Administration experience. Overview: Amyx is seeking to hire a Senior Windows Systems Administrator to support DISA's Hybrid Cloud computing environment on-site at one of their six (6) locations in the U.S. (Fort Meade, MD; Crystal City, VA; Mechanicsburg, PA; Montgomery, AL; Oklahoma City, OK; Ogden, UT).
Windows Systems Administrator The Josef GroupWindows Systems AdministratorColumbia, MarylandRequired: Bachelor’s degree in a technical discipline and 15 years’ experience as a System Administrator, OR High school diploma and 20 years’ experience as a System Administrator. Ability to demonstrate cyber/IT related experience with attention to detail, customer service, oral and written communication, and problem solving.
Sr. Windows Systems Administrator AstrionSr. Windows Systems AdministratorColumbia, Maryland$145,000–$165,000 / yearAstrion has an exciting opportunity for a highly experienced Senior Windows Administrator to build, secure, and sustain the Windows Server estate, the Windows 11 workstation fleet, and the Active Directory and Windows network services that run across three or more isolated classified networks supporting Department of Defense/Department of War (DoD/DoW) environments in Columbia, MD. The ideal candidate brings deep Windows Server and Active Directory expertise, extensive experience operating inside closed and air-gapped classified enclaves, and a proven record of building and maintaining systems in compliance with Risk Management Framework (RMF) , DoD STIG , and Comply-to-Connect (C2C) requirements.
Sr. Windows Systems Administrator TS/SCI Poly Leidos Holdings IncSr. Windows Systems Administrator TS/SCI PolyAnnapolis Junction, MD$116,350–$210,325 / yearThis role also includes supporting server, router, and firewall configuration, as well as performing security management and application performance optimization activities in an environment made up of VMware server hosts, Windows and Linux guest servers, and Virtual Desktop Infrastructure (VDI). Managing Information Assurance Vulnerability Alerts (IAVAs) and system security scanning in accordance with applicable System Security Plans, ensuring vulnerabilities are identified and remediated quickly and accurately.
Senior Windows Systems Administrator Black Canyon ConsultingSenior Windows Systems AdministratorBethesda, MDThe ideal candidate will possess deep technical proficiency across the Microsoft server ecosystem, including Active Directory, Entra ID, ADFS, IIS, SQL Server, Hyper-V, and MECM, while bringing strong hands-on administration experience in multi-cloud environments spanning Amazon Web Services (AWS) and Google Cloud Platform (GCP). In this role, you will maintain our primary Microsoft environment, plan unified infrastructure deployment strategies via Microsoft Configuration Manager (MECM/SCCM), and serve as an expert-level technical resource providing backup and primary support for complex Active Directory (AD DS) duties.
Senior Windows Systems Administrator BAE Systems PlcSenior Windows Systems AdministratorAnnapolis Junction, MD$146,670–$249,330 / yearAbout BAE Systems Intelligence & Security BAE Systems, Inc. is the U.S. subsidiary of BAE Systems plc, an international defense, aerospace and security company which delivers a full range of products and services for air, land and naval forces, as well as advanced electronics, security, information technology solutions and customer support services. Infrastructure Oversight: Monitor and optimize a sophisticated ecosystem comprising VMware server hosts, Windows and Linux guest servers, and Virtual Desktop Infrastructure (VDI).