Top Systems Administrator Jobs

Administer and maintain a mission LAN: perform OS patching, backups/restores, virus scanning, firewall protection, and DTO services; ensure ISSM/ATO security compliance and coordinate corporate or customer support.

Provide day-to-day administration and support for Windows workstations, servers, Microsoft 365, Azure AD/Active Directory, and Intune-managed endpoints. Perform deployments, patching, vulnerability remediation, user administration, troubleshooting, backups, documentation, and assist senior staff with upgrades, migrations, and cybersecurity/compliance activities (CMMC, NIST SP 800-171). Occasional travel to customer sites (1-2 trips/year).

Provide implementation, troubleshooting, maintenance, and daily operation of IT systems. Deliver Tier 1 Help Desk and Tier 2 escalation support, manage configuration and operation of client/server, storage, network, and mobile devices, and assist users with access and usage issues. Support monitoring and problem resolution across IT infrastructure.

Manage and maintain software systems for engineering, manufacturing, and production; lead migrations/upgrades; develop reporting code and dashboards; train and support users; document processes; collaborate with stakeholders to improve system performance and user experience.

Provide onsite and remote Tier 1/2 desktop support for hardware, software, and applications across NIPRNet/SIPRNet and Coalition networks. Manage ADPE lifecycle, track equipment disposition, develop desktop load configurations, test integrations, document procedures, and support COOP. Coordinate with stakeholders, perform systems planning and integration, and provide occasional 24/7 or holiday operational support as required.

Design, implement, and maintain IT infrastructure, cloud platforms, virtualization, networking, security controls, and system integrations. Provide technical ownership, troubleshooting, documentation, audits, and operational support while partnering with stakeholders, vendors, and contractors to deliver secure, scalable solutions.

Senior systems administrator responsible for deploying, configuring, and maintaining Windows and RHEL servers, VMware/VxRail virtualization, NAS/SAN storage, networking, backups, security hardening, and SQL-backed applications. Supports DoD environments, produces documentation, trains staff, recommends upgrades, and ensures compliance and system availability.

Provide systems administration support for JWICS at Ft. Meade, managing VDI/virtual environments, handling ticket escalation and outages, onboarding new enclaves, coordinating with Tier III and vendors, developing policies and SOPs, applying security settings, and mentoring junior staff.

Administer and support IT systems in an automotive manufacturing environment, including MES and ERP administration, network and device monitoring, firewalls and cybersecurity systems. Manage Microsoft Active Directory, Cisco infrastructure, and VMware virtualization. Ensure reliable system operations and collaborate across teams to support production environments.

The Network/Systems Administrator will maintain data security, track network requests, provide communication to customers, log contacts, and report activities.

The Systems Administrator will monitor system performance metrics, support system administration tasks, and manage FICO Debt Manager integration with other systems.

Administer and maintain the Fiserv DNA core banking system and connected interfaces. Manage updates, patches, security controls, user access, reporting (DNA Publisher/SQL/Oracle), and vendor coordination. Troubleshoot core-related incidents, support integrations (APIs, automation), document configurations, participate in projects and on-call rotations to ensure reliability and regulatory compliance.

The Senior Systems Administrator analyzes, designs, implements, administers, and maintains IT infrastructure systems including virtual systems, servers, and backups, collaborating with multiple teams for system improvements.

Administer, patch, configure, monitor, and troubleshoot enterprise systems and applications in a secure federal environment. Perform vulnerability remediation, access management, incident response, backups, change management, documentation, and operational reporting while collaborating with engineering, cybersecurity, and service desk teams to ensure mission continuity and secure operations.

Administer and optimize the Appian platform across environments for the USCG cloud modernization program. Manage upgrades, security, authentication, CI/CD, monitoring, backups, integrations, troubleshooting, governance, and support additional low-code platforms while collaborating with development, infrastructure, and business teams.

Operate and maintain JWICS-connected enterprise systems for PACAF A2Y, including Active Directory, Exchange, VMware, backups, patching, and restoration. Monitor system health, meet availability targets, administer AVAMAR backups, manage patches via SCCM/WSUS/Tanium, govern AD replication and NetIQ DRA, document events in SolarWinds/Splunk/ITSM, and produce vulnerability and patch reports. Provide SOPs, training, and technical leadership to ensure security and mission readiness.

The Disaster Recovery Administrator plans and oversees disaster recovery exercises, ensuring compliance with objectives, tracking documentation, and participating in testing. Responsibilities include maintaining business continuity plans and supporting data center operations.

The Senior IT Systems Administrator will manage secure IT systems, including configuration, monitoring, and compliance with security standards, while providing operational support in classified environments.

As a Senior IT Systems Administrator, you will manage classified IT systems, configure secure networks, maintain virtualization platforms, and ensure compliance with security standards while supporting a team in a closed environment.

The Systems Administrator III/IV will handle system administration tasks, manage virtual environments, support Active Directory, maintain security, and oversee backups. This role involves physical server maintenance and project management related to infrastructure improvements.

Provide Tier I/II support for on-premises and cloud-integrated Army MI enterprise systems. Manage AD and Azure AD/Entra ID accounts, enroll and troubleshoot Intune devices, administer Microsoft 365 collaboration tools, apply security patches/STIGs/IAVAs, perform basic network troubleshooting, document configurations, support JWICS VTC scheduling, and assist cybersecurity and helpdesk operations.

The Senior Systems Administrator is responsible for managing on-premises and cloud systems, focusing on security, identity, server administration, backup, and SaaS applications while coordinating with external vendors and performing updates as needed.

Administer, secure, and support enterprise AI platforms (Microsoft Copilot, Claude, Azure-hosted solutions). Manage integrations, access controls, RBAC, audit logging, cost monitoring, and Tier 2/3 incident resolution. Coordinate vendors, maintain documentation, configure Azure environments, and ensure compliance with firm governance and data protection policies. Provide occasional after-hours and training-related travel support.

The Systems Administrator manages mission-critical IT infrastructure, providing support, troubleshooting, and maintenance for Windows and UNIX systems.

The Windows Systems Administrator will manage Windows Server operations, Active Directory, patch automation, and VMware systems, while leading a team and ensuring effective communication.