Top Systems Administrator Jobs

Administer Windows servers, workstations, virtual environments, applications, and network devices supporting a U.S. Army division. Manage VMware, Active Directory, Microsoft 365, backups, patching, troubleshooting, and infrastructure changes. Implement DoD cybersecurity controls and support RMF activities, vulnerability assessments, STIG compliance, eMASS documentation, audits, incident response, and authorization efforts. Maintain system availability, security, documentation, and compliance while coordinating with vendors and government stakeholders.

Provides on-site Windows systems administration for Department of State offices, managing servers, network and endpoint hardware, applications, Active Directory, VMware environments, databases, patches, backups, security controls, incidents, configuration changes, documentation, monitoring, and system upgrades. Coordinates projects, reports operational status, and addresses risks affecting IT services.

Provide Tier 3 operations and sustainment support for a mission-critical U.S. Navy enterprise transport network. Responsibilities include monitoring infrastructure, troubleshooting outages, maintaining Linux and Windows systems, managing configurations, assets, privileged access, failover, disaster recovery, patches, firmware, software deployments, and change processes. The role requires shift work, rotating on-call coverage, Secret clearance, and up to 25% travel at the Navy customer site in Suffolk, Virginia.

Administers Red Hat Enterprise Linux infrastructure, including installation, monitoring, tuning, troubleshooting, patching, virtualization, and containerization. Develops and maintains Puppet manifests, modules, infrastructure-as-code scripts, and automation workflows. Supports server provisioning, outage resolution, documentation, and team training. The role requires an active TS/SCI clearance, onsite work at Langley AFB, Security+ certification, and willingness to provide up to 10% continental U.S. travel, potentially in a 24/7 shift environment.

Administers venue and hospitality applications, including user access, permissions, configurations, troubleshooting, vendor coordination, upgrades, testing, documentation, and system implementations. Supports POS, ticketing, event, retail, and operational platforms; monitors releases and system availability; assists with pre-event checks, go-live activities, training, and issue resolution. Provides evening, weekend, holiday, event-day, and after-hours support as needed.

Provides Linux and Windows system administration, infrastructure maintenance, troubleshooting, networking, virtualization, patching, system hardening, security tooling support, and classified-space infrastructure operations. Responsibilities include configuring hardware and software, maintaining system images, supporting remote access and compute/storage platforms, documenting procedures, implementing physical controls, and assisting with audits and system sanitization.

Manages enterprise systems, networks, servers, applications, and communication links across multiple locations. Responsibilities include installation, configuration, maintenance, upgrades, troubleshooting, performance and capacity analysis, vulnerability management, automation, user training, and technical recommendations. Directs other system administrators and supports Oracle Fusion Middleware and related enterprise applications. The role requires extensive systems administration experience and an IT-I Critical Sensitive or Tier 5 security clearance.

Administers, maintains, monitors, and troubleshoots enterprise IT systems and server environments. Responsibilities include managing servers, applications, databases, permissions, Active Directory, security policies, backups, patches, deployments, upgrades, migrations, and Tier II/III support. The role also documents configurations and procedures while supporting Windows Server, IIS, SQL Server, and production environments at Norfolk Naval Shipyard.

Provides Tier III systems administration and incident resolution across Linux, Windows, Apple, servers, networks, software, and peripherals on secure government networks. Responsibilities include installing and maintaining hardware and software, troubleshooting connectivity and application issues, optimizing network communications, managing inventories and downtime records, training staff, coordinating vendor escalations, and supporting system design. The role requires an active TS/SCI with polygraph clearance and is based at Buckley Space Force Base with 10% travel.

Administers Linux and Windows systems, virtualization platforms, and Splunk. Supports IT system implementation, troubleshooting, maintenance, capacity planning, and operational optimization while providing Tier 1 and Tier 2 support. Applies advanced systems administration and consulting expertise across the system lifecycle, from requirements through retirement, for classified government missions.

Oversee and optimize infrastructure supporting AI and machine learning platforms, including servers, cloud environments, compute resources, GPU and CPU allocation, security controls, monitoring, incident response, automation, and scalability. Collaborate with AI engineers, data scientists, and infrastructure teams; troubleshoot issues, perform root cause analysis, maintain documentation, evaluate emerging technologies, and mentor junior administrators.

Manage and optimize infrastructure supporting AI and machine learning systems, including GPU/CPU clusters, cloud environments, LLMs, data pipelines, and model deployments. Responsibilities include system monitoring, security, access management, automation, scripting, CI/CD support, troubleshooting, documentation, and performance optimization. The role collaborates with developers, data scientists, and prompt engineers to maintain reliable, scalable AI platforms.

Supports and improves internal IT systems, resolves escalated support tickets, administers SaaS and endpoint-management tools, manages user access, and strengthens security practices. The role also maintains documentation, supports compliance audits, trains help desk staff, and identifies opportunities to automate provisioning, deprovisioning, and other repetitive workflows. This remote role requires ownership of systems projects and up to 15 travel days annually.

Own and maintain a 10-bay QNAP NAS and Dropbox Business integration for secure footage storage and collaboration. Responsibilities include configuring storage, managing remote access and permissions, establishing file workflows, creating and testing independent backups, troubleshooting systems, and documenting setup and recovery procedures. The role begins with a systems review and approved remediation, followed by ongoing maintenance and support.

Leads systems and network administration across pediatric clinic locations. Responsibilities include infrastructure and phone system projects, hardware deployment, troubleshooting, employee onboarding and offboarding, vendor coordination, access and security management, documentation, automation, and process improvement. The role is primarily remote with regular onsite support, on-call responsibilities, and travel between clinics and partner locations.

Manage and support hybrid enterprise infrastructure across on-premises data centers, Azure, and AWS. Responsibilities include server, network, virtualization, identity, storage, security, monitoring, backup, disaster recovery, and infrastructure deployments. The role also develops automation with scripting and Infrastructure as Code, troubleshoots complex cross-platform issues, supports migrations and modernization projects, and maintains infrastructure documentation and operational procedures.

Administers and improves servers, identity platforms, Microsoft 365, endpoints, virtualization, backups, and business applications. Develops automation and integrations using PowerShell, Python, APIs, and orchestration tools. Supports security remediation, incident response, disaster recovery, audits, and compliance. Leads infrastructure and AI-related projects, coordinates vendors, documents systems, and provides technical guidance in a small IT department.

Administers and troubleshoots DIA’s PRESS Production and Dissemination System and supporting compute infrastructure. Responsibilities include Windows and Linux administration, Active Directory and virtualization management, scripting automation, tier-2/3 troubleshooting, patching, vulnerability remediation, DISA STIG compliance, backups, disaster recovery, monitoring, and coordination with software engineers. This is a full-time onsite role supporting mission-critical systems at Fort Meade and DIA headquarters.

Manage and secure hybrid on‑prem and cloud infrastructure (Azure and AWS). Administer identity, compute, storage, virtualization, monitoring, backups/DR, and security. Support cloud migrations, AI/ML infrastructure, Tier 2/3 troubleshooting, Microsoft 365, documentation, and process improvement.

Provide on-site systems and desktop support for Windows and Linux environments, maintain virtualization and storage, run vulnerability/compliance scans and patching, manage Active Directory and network services, automate processes with PowerShell, produce SOPs/documentation, support production/dev labs, and follow DoD security guidelines while supporting customers and ticketing requests.

Administers and maintains the Learning Management System and related training platforms. Manages course setup, enrollments, assignments, completion tracking, publishing workflows, reporting, learner support, system records, and content deployment. Supports live, virtual, and self-paced training programs, troubleshoots technology issues, maintains learning assets, and recommends process improvements. Collaborates with instructional design and cross-functional stakeholders to ensure accurate, accessible, and consistent training delivery.

Administer, monitor, troubleshoot, secure, and optimize enterprise applications and platforms supporting municipal operations. Responsibilities include system integrations, upgrades, patching, access management, documentation, performance monitoring, lifecycle management, end-user support, and collaboration with technical teams, vendors, and city departments. The role also supports compliance, data integrity, reporting, cloud modernization, and platform requirements gathering.

Leads administration, support, and continuous improvement of enterprise ALM, DevOps, software quality, and AI-powered developer platforms. Partners with engineering, cybersecurity, IT, and vendors to deliver secure, scalable services. Responsibilities include platform onboarding, automation, AI governance, usage analytics, technology evaluations, cloud migrations, integrations, roadmap leadership, troubleshooting, and enterprise modernization across global engineering organizations.

Administers Windows Server and Red Hat Enterprise Linux environments, including installation, configuration, patching, hardening, upgrades, troubleshooting, and decommissioning. Supports VMware virtualization, storage, backups, Active Directory, enterprise monitoring, disaster recovery, help desk resolution, and infrastructure modernization. Documents technical procedures, remediates vulnerabilities, and participates in after-hours Priority 1 incident response. The role requires collaboration with senior engineers to maintain secure, available, and operational mission systems.

Supports sustainment of two critical operating systems on JWICs at DIA headquarters. Responsibilities include systems administration across Red Hat Enterprise Linux environments, legacy application support with Oracle, platform security configuration, database and cloud technologies, and maintaining Java-based applications and services. The role requires Security+ certification, a TS/SCI clearance with willingness to take a CI polygraph, and eligibility for privileged user access.