Top Systems Administrator Jobs

Plan, build, administer, secure, and maintain SAP information systems using Linux, Windows, virtualization, VDI, Splunk, networking, and encryption technologies. Maintain system documentation, authority to operate, configuration management, and change control. Support data transfers, COMSEC keying material, Type 1 encryption devices, and coordination with IT teams and management. The role is fully on-site in Patuxent River, Maryland and requires a Final DoD Top Secret clearance.

Owns configuration, governance, optimization, and integration of SAP ByDesign and Salesforce. The role standardizes cross-functional business processes, maintains master data, troubleshoots issues, develops dashboards and KPIs, documents workflows, trains users, and leads system enhancements. It also supports mergers and acquisitions through data migration, process harmonization, and post-acquisition ERP alignment.

Provides SOCRATES system administration, desktop support, networking, troubleshooting, hardware and software configuration, network integration, and help desk support for USSOCOM and DoD users. Responsibilities include Windows 11 migrations, workstation replacements, communications migrations, LAN installation, system maintenance, and CONUS/OCONUS technical support. The role may require contingency deployments, extended shifts, and frequent travel to DoD installations.

Manage and maintain Windows and Linux systems, servers, networks, applications, infrastructure, permissions, and system performance. Configure operating systems and management tools, troubleshoot technical issues, implement automation and scripting, perform security monitoring, maintain documentation, and ensure compliance with organizational standards. The role also oversees inventory, supports project execution, communicates with stakeholders, evaluates emerging technologies, and mentors junior team members.

Senior systems administrator responsible for secure, classified IT environments: configure and maintain Lab-in-a-Box, VMware, backups, endpoint protection, vulnerability scanning, Active Directory/GPOs, Splunk logging, and ensure STIG/RMF/NISPOM compliance. Lead data spill response, system sanitization, documentation, and audit readiness while collaborating with security stakeholders in a 100% onsite classified area.

Designs, operates, and improves enterprise endpoint management services using Microsoft Intune, Entra ID, Windows 365, and Azure Virtual Desktop. Responsibilities include device policies, application deployment, patching, automation, compliance, identity, Cloud PC administration, monitoring, Tier 3 support, incident leadership, roadmap development, technical documentation, mentoring, and cross-functional initiative leadership. The role participates in on-call rotations and occasional travel as needed.

Provides junior-level IT support for Department of State systems, including ticket triage, desktop and mobile device support, Government-Furnished Equipment, application deployment, infrastructure and network administration assistance, web services, account provisioning, documentation, and change management. The role works under senior staff supervision and requires an active Secret clearance, basic troubleshooting knowledge, and willingness to develop skills across multiple IT domains.

Build and operate Linux-based ML training clusters and inference cloud infrastructure. Responsibilities include access management, hardware validation, job scheduling, container orchestration, CI/CD, observability, incident response, capacity planning, autoscaling, cost tracking, and production security. The role supports heterogeneous accelerators, large-scale training, LLM serving, developer workflows, and reliable model deployments while collaborating across training, inference, product, and technical teams.

Administer and support enterprise Citrix Virtual Apps and Desktops and Citrix DaaS environments across on-premises and cloud platforms. Install, configure, patch, upgrade, monitor, and troubleshoot Citrix components, Windows Server hosts, applications, profiles, authentication, networking, and user sessions. Manage catalogs, delivery groups, images, policies, and access components. Automate administration with PowerShell, execute changes and disaster recovery activities, maintain documentation, and provide advanced escalation support, mentoring, and technical leadership.

Administers and engineers Microsoft Intune, Entra-integrated endpoint management, and Windows 365 services at enterprise scale. Responsibilities include Windows enrollment, Autopilot, configuration and compliance policies, endpoint security, application deployment, patching, automation with Ansible and PowerShell, Cloud PC operations, troubleshooting, platform upgrades, documentation, disaster recovery, and technical leadership.

Administers and controls QMS documentation, including procedures, work instructions, forms, manuals, revision histories, approvals, releases, and archives. Coordinates periodic reviews with process owners, ensures current documents are accessible, supports audit readiness, tracks overdue updates, and maintains records related to corrective actions and process changes. The role also improves document-control workflows and guides employees on documentation practices in an aerospace repair and overhaul environment.

Administer VMware, Windows Server, Active Directory, enterprise storage, backup, networking, PKI, and Linux environments. Implement DISA STIGs, conduct vulnerability scans, remediate POA&Ms, patch systems, support RMF assessments, and maintain security baselines and documentation. Provide hardware support, monitoring, technology refresh assistance, and IT lifecycle support in a federal environment.

Administer and troubleshoot client desktop, server, networking, virtualization, Microsoft 365, Azure, security, backup, and cloud environments. Resolve escalated infrastructure issues, support service desk and field operations, maintain documentation, follow ITIL and security practices, and mentor Systems Technicians. The role also contributes to process improvement, SOP development, AI-enabled administration, client consultations, and technical training across multi-client managed service environments.

Administers and supports client desktop, server, networking, virtualization, Microsoft 365, cloud, backup, and security environments. Resolves escalated infrastructure issues, manages tickets, troubleshoots complex systems, documents solutions, supports client environments, and mentors Systems Technicians. The role also contributes to process improvement, training, AI-enabled administration, and may participate in an on-call rotation.

Administer and improve server, network, cloud, software, hardware, backup, monitoring, and Microsoft 365 environments. Provide Tier 2 support, assist with infrastructure deployments, security assessments, user training, and IT modernization projects. Manage hypervisors, storage, disaster recovery, network equipment, and phone systems while supporting business users and participating in an onsite on-call rotation.

Provides Tier 2 technical support and systems administration, troubleshooting enterprise IT issues, documenting solutions, collaborating on advanced resolutions, and supporting after-hours or on-call needs. The role is onsite in Washington, DC, requires U.S. citizenship, an active Top Secret clearance with SCI eligibility, and DoD 8140 IAT II compliance.

Provides systems administration and IT support for DoD tactical, afloat, and laboratory environments. Plans, configures, tests, maintains, and upgrades operating systems and development/test environments. Performs troubleshooting, patching, backups, security assessments, vulnerability mitigation, and STIG compliance using Navy and DoD tools. Collaborates with cybersecurity, network, systems, and software engineers while supporting agile release and automation processes.

Build, manage, and optimize secure AWS cloud infrastructure across multi-account environments. Install and maintain servers and platforms, monitor performance, troubleshoot outages, manage access controls and backups, perform patching and STIG compliance, and support Kubernetes/EKS workloads. The role also contributes to infrastructure as code, disaster recovery, automation, technical documentation, and resilience engineering within a SAFe Agile program. An active DoD Secret clearance, five years of experience, and quarterly travel to Scott Air Force Base are required.

Provides day-to-day administration, break-fix support, patching, and security maintenance for physical and virtualized servers, systems, and applications. Configures security tools, scans endpoint integrity, resolves infrastructure issues, supports backend systems, collaborates with technical teams and vendors, documents solutions, and assists with new technology deployments.

Administer and support corporate IT infrastructure, including Windows servers and PCs, Active Directory, networks, firewalls, VMware, cloud services, backups, and security systems. Troubleshoot helpdesk and infrastructure issues, monitor performance and security, manage incident response, implement technologies, document procedures, coordinate user training, and support infrastructure projects. The role is onsite in Hayward, California, with occasional after-hours and weekend work.

Administers and supports institution-wide AI-enhanced systems, including Oracle Fusion, Insightstream AI, and related agents. Maintains integrations, configurations, updates, scheduled jobs, system performance, documentation, and data integrity. Troubleshoots issues, coordinates outages and planned changes, evaluates technology solutions, and supports adoption among faculty, administrators, and staff. The role also develops API- and script-based integrations and provides technical support across college locations.

Implements and maintains cybersecurity compliance controls for enterprise systems supporting USCENTCOM. Responsibilities include remediating ACAS/Tenable and STIG findings, patching Windows servers, applying DoD security directives, managing vulnerabilities, POA&Ms, certificates, PKI, SecureView, and compliance documentation. The role also develops PowerShell or Ansible automation, supports security architecture reviews, tracks remediation progress, and briefs technical and leadership stakeholders.

Administer and optimize cybersecurity infrastructure supporting U.S. Central Command. Configure and maintain SIEM, EDR, network access control, and SOAR platforms; develop detection rules, dashboards, integrations, automation scripts, and response workflows. Perform patching, audits, troubleshooting, compliance monitoring, documentation, training, and stakeholder support. The role requires Linux administration, cybersecurity expertise, a TS/SCI clearance, and U.S. citizenship.

Administers and supports complex enterprise networks across data centers and cloud environments. Responsibilities include network design, implementation, migration, troubleshooting, performance monitoring, security hardening, documentation, lifecycle management, and administration of Palo Alto firewalls and Cisco networking equipment. The role also supports DoD cybersecurity compliance, patch management, STIGs, disaster recovery, automation, and mission-critical Army IT services.

Supports implementation, troubleshooting, maintenance, configuration, and daily operation of IT systems. Provides Tier 1 and Tier 2 help desk support, resolves escalated issues, assists users, monitors client/server, storage, network, and mobile systems, and performs capacity planning. Configures and manages UNIX and Windows operating systems, maintains network integrity, improves reliability and performance, supports dispatch hardware, and communicates issue status and analysis to management and internal customers.