897 windows administrator jobs at 362 companies in Waldorf, MD

1d
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Windows System Administrator
Washington, District of Columbia, United States
$104k-$218k/yr HybridFull Time
CACI
CACINYSE: CACI: Provider of specialized IT and mission-critical government services.
Minimum 7 years of Windows system administration experience, Windows Server, Active Directory, Group Policy, DISA STIGs, security hardening, patching, vulnerability remediation, and identity access management expertise; U.S. citizenship required.
Windows Server, Active Directory, Group Policy Objects (GPOs), DISA STIGs, VXRails, Zscaler, PKI, AWS, Microsoft Azure
1d
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Windows System Administrator
Washington, District of Columbia, United States
$104k-$218k/yr HybridFull Time
CACI
CACINYSE: CACI: Provider of specialized IT and mission-critical government services.
7+ YOEBS/BA plus 8 years applicable experience or equivalent; 7+ years Windows administration; Windows Server, Active Directory, Group Policy, DISA STIGs, vulnerability remediation, identity management, and security logging expertise required.
Windows Server, Active Directory, Group Policy Objects (GPOs), DISA STIGs, VXRails, Zscaler, Public Key Infrastructure (PKI), ICAM, AWS, Microsoft Azure
1w
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Windows Systems Administrator
Arlington, Virginia, United States
OnsiteFull Time
The One 23 Group
The One 23 Group: Delivering integrated Operational Intelligence, Secure Digital Engineering, and Infrastructure Engineering to enable decision advantage.
10+ YOERequires active Top Secret clearance with SCI eligibility, DoD 8140/8570 IAT-II certification, and 10 years of enterprise Windows systems engineering or administration experience.
Windows, Active Directory, VMware, Virtual Desktop, DNS, DHCP, SAN, PowerShell
3d
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Windows Systems Administrator
Alexandria or Virginia or Alexandria or North America
$113k-$118k/yr OnsiteFull Time
Sienna Systems
Sienna Systems: Service-disabled veteran-owned IT services firm providing application development, data analytics, and systems engineering to federal customers.
6+ YOERequires 6+ years of systems administration, extensive Windows Server, SCCM, VMware ESX/ESXi, IIS, SQL Server, networking, customer support, and communication experience; must obtain Public Trust suitability.
Windows Server, SCCM, Microsoft ADS, SMS, SUS, VMware ESX/ESXi, IIS, SQL Server, TCP/IP, SharePoint, PKI, DFS, Microsoft ITIL, Microsoft Security+, Microsoft 508
2mo
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Windows System Administrator
College Park, Maryland, United States
OnsiteFull Time
Entarian
Entarian: Private engineering and federal technology services provider serving U.S. space, defense, and civilian government agencies.
1+ YOE1-3 years Windows systems administration experience; manage ServiceNow ticket queues; troubleshoot Windows 10-11; administer Active Directory, DNS, user accounts; ability to lift 50 lbs; U.S. citizenship and Public Trust clearance eligibility.
ServiceNow, Active Directory, Windows 10-11, DNS
2mo
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Senior Windows Systems Administrator
Dahlgren, Virginia, United States
$52/hr OnsiteFull Time
The Tatitlek Corporation
The Tatitlek Corporation: Alaska Native providing diversified professional and technical services.
6+ YOE6+ years system administration experience with Windows environments; DoD Secret clearance (or ability to obtain); IAT Level 2 and OS (Windows) certification; experience with WSUS, GPOs, backups, documentation, and end-user support.
WSUS, GPO, Windows Server, Windows Workstations, Thin Client
2w
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Windows Systems Administrator
Washington, District of Columbia, United States
OnsiteFull Time
The Pictsweet Company
The Pictsweet Company: Family-owned producer and distributor of frozen vegetables.
5+ YOERequires 5+ years of experience, a bachelor's in IT or related field, Microsoft Windows Server Hybrid Administrator certification, and Secret clearance. Sec+ and ITIL 4 are preferred.
Active Directory (AD), System Center Configuration Manager, Travel Document Issuance System, Passport Records Imaging System Management, Automated Cash Register System, vSphere Installation Bundles (VIBs), Oracle, SQL, ServiceNow
3w
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Windows Administrator (Annapolis Junction, MD)
Annapolis Junction, Maryland, United States
OnsiteFull Time
Maximus
MaximusNYSE: MMS: Government services and health administration partner for public programs.
7+ YOERequires active Secret clearance, 7+ years of related experience, high school diploma/GED, Windows server administration expertise, and availability for five days onsite and rotational emergency on-call coverage.
Windows, Windows 2008, Windows 2012R2, Windows 2016R2
4w
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Senior Windows Systems Administrator
Washington or Sterling or United States
$112k-$179k/yr RemoteFull Time
Peraton
Peraton: Provider of mission-critical national security technologies and services.
10+ YOEU.S. citizen with active Secret clearance, 10+ years Windows Server administration, 7+ years Active Directory experience, 3+ years PowerShell/VB scripting, and knowledge of government IT security.
Windows Server, Microsoft Active Directory, PowerShell, VBScript, Microsoft Project, Microsoft Visio, Windows 11
1mo
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Windows System Administrator
Lexington Park, Maryland, United States
$125k-$150k/yr OnsiteContract
Perrygo Consulting Group
Perrygo Consulting Group: Private U.S. defense contractor providing acquisition, cybersecurity, program-management, and IT services to Department of Defense customers.
3+ YOE3+ years relevant experience, Security+ and OS certification, Windows/VMWare expertise, team lead experience preferred, ACAS and STIG familiarity, scripting/Ansible/GitLab/Bash, Top Secret clearance required.
VMWare, ACAS, Ansible, GitLab, Bash, Windows Server
3w
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Windows Systems Administrator
Alexandria, Virginia, United States
$140k-$200k/yr OnsiteFull Time
Bart & Associates
Bart & Associates: Information technology systems integrator providing mission-critical solutions to the United States Government.
0+ YOEAdminister and sustain Windows server/workstation environments, support LAN/WAN operations, diagnose and resolve complex system/network issues; TS/SCI clearance required; 0+ years specialized experience; bachelor\u0002s degree preferred.
Windows Server
3mo
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Linux/Windows Systems Administrator
Springfield, Virginia, United States
OnsiteFull Time
Ascension Federal Services
Ascension Federal Services: Provides IT, engineering, and project management services to federal agencies.
4+ YOE4 years of experience in Linux/Windows server administration; Bachelor's in IT; Security+ or equivalent; Secret clearance.
Linux, Windows, Bash, Python, PowerShell, VMware, Hyper-V, Docker, Kubernetes, Ansible, Puppet, Chef, AWS, Azure, GCP, Firewalls, Security best practices
1mo
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Windows Senior System Administrator
Germantown, Maryland, United States
$100k-$120k/yr OnsiteFull Time
Edgewater Federal Solutions
Edgewater Federal Solutions: Private federal IT contractor providing enterprise IT, cybersecurity, data, and professional services to U.S. government customers.
2+ YOEUS citizen with active Top-Secret or Q clearance,2+ years Windows Server administration,AD/GPO management,WSUS/SCCM patching,DISA STIG hardening,documentation skills,and ability to lift 50 lbs and mentor junior staff.
Windows Server, WSUS, SCCM, DISA STIGs, Active Directory, Group Policy Objects (GPO), MS Hyper-V, VMWare ESXi, VMware Horizon vCenter, PKI
1mo
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Junior Windows Systems Administrator (5451)
Patuxent River, Maryland, United States
$72k-$119k/yr OnsiteFull Time
SMX
SMX: Private U.S. IT and advanced-engineering provider delivering cloud, C5ISR, and digital-transformation services to government and commercial clients.
1+ YOETop Secret clearance, 1+ year systems administration experience, CompTIA Security+ (or DoD 8570-compliant) certification, Windows workstation/server support, troubleshooting, and configuration management knowledge.
Windows, Linux
2mo
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Senior Windows Systems Administrator
Bethesda, Maryland, United States
OnsiteFull Time
Black Canyon Consulting
Black Canyon Consulting: Privately held woman-owned consulting firm providing program and IT management support to U.S. federal research agencies.
5+ YOE5+ years Windows systems administration experience, deep Active Directory expertise, hybrid cloud (AWS/GCP) experience, strong PowerShell automation skills, and hands-on experience with Microsoft server ecosystem and MECM/SCCM.
Windows Server 2019, Windows Server 2022, Active Directory (AD DS), Microsoft Entra ID, ADFS, IIS, SQL Server, Hyper-V, Microsoft Configuration Manager (MECM / SCCM), WSUS, Group Policy (GPO), System Center Virtual Machine Manager, Amazon Web Services, Google Cloud Platform, Microsoft Azure, PowerShell, Kerberos, NTLM, SAML
4w
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Senior Windows Systems Administrator
Washington or Sterling
$112k-$179k/yr RemoteFull Time
Peraton
Peraton: Provider of mission-critical national security technologies and services.
10+ YOEExperience administering Windows Server (2016-2025), Active Directory, DNS/DHCP, PowerShell/VBScript scripting, knowledge of gov IT security, and U.S. citizenship with active Secret clearance.
Windows Server, Active Directory, PowerShell, VBScript, Microsoft Project, Microsoft Visio, Windows 11, DNS, DHCP, EMR
3w
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Sr. Windows Systems Administrator
Columbia, Maryland, United States
$145k-$165k/yr OnsiteFull Time
Astrion
Astrion: Provider of mission-critical services for defense and federal agencies.
8+ YOEActive TS/SCI clearance, bachelor's or equivalent, 8+ years Windows/AD admin in classified DoD environments, RMF/STIG/C2C experience, PowerShell automation, MECM/WSUS patching, ACAS/Nessus/SCAP and SIEM familiarity.
Windows Server, Windows 11, Active Directory, PowerShell, Microsoft Endpoint Configuration Manager, MECM, WSUS, MDT, WDS, ACAS, Nessus, SCAP, SIEM, Microsoft SharePoint, Hyper-V, NetApp, SAN, Git, Microsoft Defender for Endpoint, AppLocker, WDAC, Azure Government
1mo
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Classified Windows System Administrator
El Segundo or Chantilly
$75k-$113k/yr OnsiteFull Time
The Aerospace Corporation
The Aerospace Corporation: Provides technical expertise and research for national space programs.
3+ YOETS/SCI clearance and U.S. citizenship required. 3+ years enterprise Windows administration, 2+ years virtualization (VMware or Hyper-V). Must meet DoD 8570.01-m IAT Level II (CompTIA Security+). Experience with Citrix, Active Directory, NFS, and EM environments preferred.
Citrix, Windows Terminal Server, VMware, Hyper-V, Windows Admin Center, MS SQL, Puppet, PowerShell DSC, Ansible, Bash, PowerShell, Terraform, Python, NFS, Active Directory
3mo
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DS Windows System Administrator
Chantilly, Virginia, United States
OnsiteFull Time
Probity Inc.
Probity Inc.: Employee-owned software and systems engineering contractor serving U.S. defense, intelligence, civilian, and law-enforcement agencies.
7+ YOE7+ years of Windows systems experience; Active Directory, scripting; patch management; enterprise security.
Active Directory, LDAP, Centrify, PowerShell, VB, Windows Server 2008/2012/2016, SCOM, ACS, Microsoft Exchange, Outlook, Symantec, McAfee, VMware, LAN/TCP-IP, Cisco networking
3w
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Windows System Administrator - 2nd Shift
Arlington, Virginia, United States
OnsiteFull Time
GCyber
GCyber: Privately held government IT contractor providing cybersecurity, infrastructure, and program-management services to federal agencies.
8+ YOERequires Top Secret/SCI clearance, bachelor's degree in a related discipline, 8+ years of relevant experience, IAT II certification, Windows Server expertise, and working Linux knowledge.
Windows Server, Linux