General Dynamics Information TechnologyNYSE: GD: Provides mission-critical IT services to government and defense organizations.
8+ YOE8+ years virtualization experience with VMware, PowerCLI scripting, DISA STIG application, Secret clearance, baseline DoD IAT II certification required and additional VMware certification within six months.
Applied Information Sciences: Delivers cloud transformation and software engineering services to organizations.
6+ YOERequires 6–8+ years of senior vSphere administration, 5+ years of senior Windows Server administration, PowerShell, disaster recovery, high availability, SAN, backup, networking, and Active Directory expertise.
VMware vSphere, ESXi, Windows Server, Windows Server 2019, Windows Server 2022, Windows Server 2025, NetApp, Veeam, PowerShell, Active Directory, DNS, TCP/IP, VLANs
Applied Information Sciences: Provides cloud transformation and software engineering services for enterprises.
6+ YOERequires 6–8+ years senior vSphere administration, 5+ years senior Windows Server administration, Public Trust clearance, PowerShell, disaster recovery, high availability, SAN, networking, and cloud migration experience.
VMware vSphere, ESXi, Windows Server, NetApp, Veeam, PowerShell, Active Directory, DNS, TCP/IP, VLANs
Washington or Oklahoma City or Atlantic City or Egg Harbor Township
OnsiteFull Time
Tetra TechNASDAQ: TTEK: Global provider of high-end consulting and engineering services.
11+ YOE11+ years in server consolidation, virtualization, cloud/hybrid deployments, containers, CI/CD, IaC (Terraform), Windows/Unix administration, security hardening, and AWS experience; ability to obtain Public Trust.
GitLab, Red Hat OpenShift, FluxCD, ArgoCD, Docker, Kubernetes, Terraform, Splunk, Tripwire, AWS, AWS GovCloud
Systems Administrator - Virtualization (VDI/Citrix)
Arlington, Virginia, United States
OnsiteFull Time
SHR Consulting Group: Provides IT consulting and engineering services to federal government agencies.
5+ YOE5+ years Citrix/XenApp/XenDesktop and VMware Horizon VDI; DoD STIGs; DoD security; Secret clearance or higher; strong troubleshooting and after-hours support.
Citrix XenApp, XenDesktop, VMware Horizon, vCenter, ESXi, NetScaler, App-V, ThinApp, SCCM/MECM, Active Directory, DNS, DHCP, Group Policy, CAC/PKI
VAE: Provides IT infrastructure solutions and managed services.
Requires active TS/SCI clearance, DoD 8570 baseline certification, server administration experience, virtualization, Active Directory, GPO, MFA, and root-cause troubleshooting expertise.
Linux, Microsoft Windows Server, Solaris, VMware, Teradici VDI, Active Directory, Group Policy Objects (GPO), PowerShell, Bash, Python
Alliance Defending Freedom: Protects religious freedom and free speech through legal advocacy.
3+ YOE3+ years systems administration experience, Windows domain/Active Directory, virtualization, Microsoft Azure, Tier I/II support, strong analytical and project management skills.
Microsoft Azure, Azure Active Directory, Active Directory, VMware, Hyper-V, KVM, OpenStack, Kubernetes, ITSM
TechFlow: TechFlow provides infrastructure support and digital services for government.
6+ YOEBachelor's degree and 6+ years systems administration experience; Windows/Linux administration, monitoring, patching, backups, debugging; virtualization and scripting experience preferred; ability to obtain Public Trust clearance.
ManTech: Provides technology solutions for defense and intelligence agencies.
10+ YOERequires TS/SCI with Polygraph, 10+ years systems administration experience (or 15+ with Associate), Linux, Splunk (2+ yrs), Ansible/IaC, scripting (Python/Bash/Perl), virtualization (VMware) and SAN experience.
CACINYSE: CACI: Provides information technology and professional services to government clients.
7+ YOETop Secret/SCI w/ Polygraph required, CompTIA Security+, 7+ years systems engineering/administration experience managing Windows Server, virtualization (VMware/Hyper-V/Nutanix), AD, and vulnerability remediation (Nessus).
Microsoft Windows Server, VMware, Hyper-V, Nutanix, Microsoft Exchange, Microsoft SQL Server, Skype for Business, Jira, Confluence, Nessus, Pure Storage, Dell PowerVault, Synology, RSA, CyberArk, Active Directory, DNS, DHCP, Group Policy, Microsoft SharePoint Server, Microsoft MECM/SCCM, McAfee, Trellix, Nakivo, Commvault
Metrea: Provider of effects-as-a-service to global national security partners.
3+ YOERequires active TS/SCI clearance, 3+ years systems administration experience, DISA STIGs/SCAP compliance, core infrastructure (AD, DNS, DHCP) and virtualization expertise, DoD 8570 IAT II/III certification (CompTIA Security+ or CISSP) preferred, COMSEC custodianship.
DISA STIGs, SCAP tools, Active Directory (AD), Group Policy, Identity Management/LDAP, DNS, DHCP, Hyer-V, VMware
RELI Group: Provides IT and management consulting services to federal agencies.
3+ YOEOnsite 5 days/week in Windsor Mill. Minimum 3 years system administration/helpdesk experience. Strong knowledge of Windows Server, Active Directory, Microsoft Exchange/Office 365, DNS, DHCP, group policy, virtualization, backups, VPN/MDM, and Tier 2 troubleshooting.
Windows Server, Linux, Active Directory, Microsoft Exchange, Microsoft Office 365, DNS, DHCP, Group Policy, VMware, Hyper-V, VPN, MDM
RELI Group: Provides professional IT and management services to government agencies.
3+ YOEOnsite 5 days/week in Windsor Mill, MD. 3+ years system administration/helpdesk experience. Strong knowledge of Windows Server, Active Directory, Exchange/O365, DNS, DHCP, Group Policy, virtualization, backups, VPN, MDM, and ticketing/remote support; relevant certifications a plus.
Windows Server, Active Directory, Microsoft Exchange, Microsoft O365, DNS, DHCP, Group Policy, VMware, Hyper-V, VPN, MDM
Ascension Federal Services: Provides IT solutions and services to support complex systems
10+ YOEBachelor's in Computer Science or related field; 10+ years in systems administration; Windows/Linux; virtualization; networking; problem-solving; communication.
AeroVironmentNASDAQ: AVAV: Designs and manufactures unmanned aircraft and tactical missile systems.
9+ YOERequires 9+ years of IT or systems administration experience, Linux administration, NVIDIA GPU/HPC systems, data center hardware deployment, virtualization, network troubleshooting, and strong technical writing.
Linux, NVIDIA H100, NVIDIA H200, NVIDIA B300, AWS, Large Language Model (LLM)
American Systems: Providing engineering and IT solutions to federal government agencies.
2+ YOEU.S. citizen with active Secret clearance (TS/SCI eligible), IAT Level II certification, bachelor's or equivalent, 2+ years network administration experience with Cisco, familiarity with routing protocols, network monitoring, virtualization, and cloud concepts.
Anduril Industries: Defense technology building autonomous military hardware and software.
Bachelor's degree or equivalent; AV system administration experience; familiarity with conferencing and editing tools; knowledge of AV equipment and virtualization; strong communication and problem-solving skills.
Bithgroup Technologies: Provides IT services and hardware solutions to organizations.
5+ YOE5+ years systems administration experience; strong Azure and Microsoft 365 administration (Intune, Entra ID, Exchange); PowerShell and multi-OS fluency; experience with virtualization, backups, security, and SOC 2 support.
Microsoft 365, Azure, Intune, Entra ID, Exchange, PowerShell, Windows, macOS, iOS, Android, Hyper-V, Red Hat Enterprise Linux (RHEL), Fortinet, Action1 (Patch Management), Blumira, Veeam, Mimecast, WordPress, Ubiquiti
Oneida Professional Services: Provides professional and technical services to federal government agencies.
Experience administering Windows Server and Linux/UNIX environments, backup and recovery, patch management, DISA STIG security baselines, virtualization, scripting, and strong troubleshooting and communication skills.
Windows Server, Linux, UNIX, DISA Security Technical Implementation Guides (STIGs), VMware, Hyper-V, PowerShell, Bash, Python