Top Systems Administrator Jobs

Provide IT support and systems administration: troubleshoot Windows/macOS, onboard/offboard staff, maintain conferencing and server systems, assist IT projects, and improve MDM/identity systems.

Provide second-tier Linux system administration for large-scale, multi-site deployments. Manage Red Hat systems, virtualization, storage (SAN, FC), clustered filesystems, security hardening, automated installs, scripting, backup, performance tuning, and support for developers and users.

Lead design, maintenance, and O&M of a secure Linux-based enclave: manage servers, VMs, switches, NAS, VLANs, VPNs; support developers; deploy and monitor nginx and security/monitoring tools; maintain documentation, compliance (RMF), patching, and monthly reporting.

Provide Tier 1/2 end-user IT support across multi-site manufacturing: deploy and manage devices, administer Microsoft 365 and Active Directory, handle onboarding/offboarding, troubleshoot network and printer/RF scanner issues, coordinate with MSP and vendors, and maintain IT documentation and baseline security practices.

Provide Linux workstation and server administration in physical and virtual environments: onboard users, image/configure workstations, troubleshoot systems and networks, monitor performance, plan upgrades/outages, install data center equipment, document infrastructure changes, and provide HelpDesk and occasional after-hours support.

Administer, configure, and support global collaboration and AI productivity platforms (Microsoft 365, Slack, Zoom, Power Platform). Build automation, enforce governance and security (DLP, eDiscovery), support meeting room technologies, provide escalation support, document standards, and partner with stakeholders to drive adoption and operational excellence.

The IT Systems Administrator ensures operational excellence in mission-critical IT settings, providing support for networking and IT infrastructure while collaborating with teams to resolve technical issues and maintain systems.

Provide hands-on Microsoft 365 and selected Azure administration, escalated helpdesk and production-support for office and manufacturing environments. Implement, secure, and improve cloud services (Entra ID/Azure AD, Exchange Online, Teams, Intune), and support networking, VMs, storage, monitoring, and backup in partnership with IT management.

Senior Linux systems administrator responsible for Ubuntu/Debian server and network administration, virtualization (VMware, AWS), automation (Puppet, Kickstart), monitoring (Nagios/Ganglia/Cacti), firewall/load balancer/LDAP configuration, scripting, building/migrating data center infrastructure on Dell hardware, troubleshooting, documentation, and project status reporting.

Manage and maintain corporate IT infrastructure including servers, storage, portal/web applications, and UNIX/Windows systems. Deploy, configure, patch, and troubleshoot systems, support cloud migrations and IaC, work with vendors and project teams, and ensure reliable, secure environments across departments.

Onsite Systems/LAN Administrator supporting ADOT network: troubleshoot network, software, and hardware issues; install/configure PCs and peripherals; administer Microsoft servers and AD; assist on projects; requires statewide travel and a valid Arizona Class D driver’s license.

Onsite Systems/LAN Administrator supporting ADOT network: troubleshoot network, software, and hardware issues; install/configure PCs, peripherals, and Microsoft servers; support Windows 7, Ethernet and wireless environments; assist with projects and perform statewide travel. Requires customer-facing support and documentation.

Manage and support Red Hat Linux systems on VMware, configure Puppet for deployments, monitor performance, collaborate with infrastructure teams, ensure security/compliance, assist testing and disaster recovery, and automate administrative tasks.

Manage and maintain on-site server and infrastructure environments: install/configure servers, monitor system health, perform backups and security monitoring, apply patches, troubleshoot and recover hardware/software failures, manage user accounts, support clients, maintain documentation, and participate in on-call rotation.

Manage and maintain virtualized environments with VMware, ensure data protection with Veeam, and optimize SAN storage for performance.

Provide Linux and Windows systems administration for classified DoD programs, implement secure infrastructure (Ansible, LDAP/AD, VMware, storage, backups), collaborate with cybersecurity, troubleshoot complex issues, meet DoD certification and clearance requirements, and support 24x7 operations with occasional travel.

The IT Systems Administrator will manage and secure IT systems, provide user support, ensure cybersecurity compliance, and collaborate on process improvements.