683 systems administrator jobs at 237 companies in Centreville, MD
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Systems Administrator
Annapolis Junction or Washington
$150k-$175k/yrOnsiteFull Time
BlueHalo: BlueHalo is a private defense technology developing aerospace, missile-defense, cyber, directed-energy, and autonomous systems for national-security customers.
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)
Lentech: Employee-owned federal IT and mission-technical services contractor supporting civil, defense, and intelligence agencies.
10+ YOEActive TS/SCI with FSP through MD, 10 years systems administration experience, DoD 8570 IAT Level I, experience with Devops and AWS, UNIX and Windows administration, Tier 1/2 support, system implementation, troubleshooting, and capacity planning.
BITHGROUP Technologies: Baltimore-based HUBZone-certified minority IT services and hardware provider serving government, education, healthcare, and private 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
Aberdeen Proving Ground or Fort Belvoir or Huntsville or Austin or Tobyhanna Army Depot or Letterkenny Army Depot or Lakehurst
OnsiteFull Time
Envision Innovative Solutions: Private technology services providing IT, cybersecurity, program management, and mission support to government and commercial clients.
5+ YOE5+ years of systems administration; install, configure, maintain, troubleshoot OS, hardware, and network; perform backups and provide user support.
Booz Allen HamiltonNYSE: BAH: Global firm providing management, technology, and engineering consulting services.
System administration or engineering experience, device and application configuration, network troubleshooting, deployment automation, TS/SCI clearance, polygraph eligibility, and high school diploma or GED.
Microsoft Windows, Linux, Unix, SQL, Infrastructure-as-Code
Booz Allen HamiltonNYSE: BAH: Global firm providing management, technology, and engineering consulting services.
Systems administration experience, device and application configuration, network troubleshooting, deployment automation, process improvement, HS diploma/GED, and active TS/SCI clearance with polygraph willingness.
Microsoft Windows, Linux, Unix, SQL, Infrastructure-as-Code
CACINYSE: CACI: Provider of specialized IT and mission-critical government services.
10+ YOETS/SCI with Polygraph required; Bachelor's degree in IT or related field (or equivalent experience); 10+ years systems administration experience; DoD 8570/8140 IAT Level II; experience with firewalls, VPNs, VMware, automation (Python/Bash/Ansible), Windows/Linux administration, IAVA/STIG remediation, and Nessus.
GRVTY: Defense technology firm delivering automated intelligence and mission support.
10+ YOEActive TS/SCI with polygraph, 10 years of systems administration experience, technical bachelor's degree or five additional years' experience, DoD 8570 IAT Level I+, and Ansible, AWS, and Terraform experience.
Ansible, AWS, Terraform, UNIX, Windows, Information Technology (IT), DevOps
CACINYSE: CACI: Provider of specialized IT and mission-critical government services.
10+ YOETS/SCI with Poly required; Bachelor's in IT or related (or equivalent experience); 10+ years systems administration; DoD 8570 IAT II certification; experience with firewalls, virtualization, automation, patching, and DoD cybersecurity compliance.
ManTech International: Advancing the future of defense through innovative technology.
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.
SAICNASDAQ: SAIC: Premier technology integrator for defense, space, and civilian markets.
9+ YOERequires a bachelor's degree and 9+ years, master's and 7+ years, or PhD/JD and 4+ years; active TS/SCI with polygraph; operating systems, configuration, patch management, upgrades, troubleshooting, and server administration expertise.
Metrea Algorithmics: Provides mission-critical classified IT, electronic warfare, and secure communications solutions to 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: Trusted Government Partner for Digital Transformation, Health, and Security
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: Trusted Government Partner for Digital Transformation, Health, and Security
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
VAE, Inc.: Minority woman-owned IT infrastructure provider and value-added reseller serving government and commercial clients.
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
VTG: Provider of national security and digital transformation solutions.
TS/SCI with Poly required. System administration on CentOS 7, Rocky 9, RHEL 9; hardware installation; Linux and Windows 10/11 administration; STE and data transfer experience. Ansible, Proxmox, IDM, RHCSA, TLS, PXE and LDAP integration desired.
CentOS 7, Rocky 9, RHEL 9, Customer Secure the Enterprise (STE), Linux, Ansible, PXE boot, Proxmox, Identity Manager (IDM), LDAP, Red Hat Certified System Administrator, Transport Layer Security (TLS), Windows 10, Windows 11
Red Arch Solutions: U.S. small-business provider of data modernization, cybersecurity, and cloud solutions for Defense and Intelligence Community customers.
15+ YOEActive TS/SCI with polygraph and Security+ required; 15 years of systems administration experience and a technical bachelor's degree, or five additional years of experience in lieu of the degree.
Linux CLI, Bash, Python, Red Hat Satellite, Splunk, VMware ESXi, SaltStack, Ansible, HPE OneView, Nagios, Docker, Kubernetes, Weka, CEPH, GPFS, HDFS, Jira, Confluence
Peraton: Provider of mission-critical national security technologies and services.
Requires 7–16 years of experience depending on education, Windows and Unix administration, infrastructure and virtualization skills, DOD IAT II certification, TS/SCI or SCI eligibility, and U.S. citizenship.
ClearOne Advantage: Private U.S. debt settlement helping consumers resolve credit-card and other unsecured debts.
2+ YOERequires 2+ years of IT experience, 1+ year as an Associate Systems Administrator, ITSM ticketing experience, SaaS access provisioning, technical communication skills, and U.S. work authorization.
Microsoft Windows, macOS, Desktop Central, Active Directory, Microsoft Intune, Azure, Microsoft 365, Salesforce, DocuSign, GitHub, Microsoft SharePoint, Microsoft Outlook, Microsoft Teams, Claude, Microsoft Copilot, InContact, Teramind, FTP, Tableau, Jira Service Management, VMware, AWS