Top IT Systems Administrator Jobs

Maintain, configure, and secure enterprise and air-gapped systems onsite. Provide Tier II support, install and patch servers and desktops, manage virtual machines, administer Red Hat Linux, monitor systems, document procedures, escalate issues, and ensure compliance with DoD security standards and organizational policies.

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

The Principal IT Systems Administrator oversees IT systems, leading complex initiatives, managing infrastructures and endpoints, enhancing security compliance, and ensuring incident management and documentation standards are met.

Senior IT Systems Administrator providing escalated technical support and incident management for global internal users. Mentor service desk staff, manage endpoints via SCCM, Jamf, and Workspace ONE, and improve IT processes, policies, and application usability. Troubleshoot Mac, Windows, and Linux systems, coordinate cross-functional resolution, and support office-based technology needs as required.

Manage and secure classified IT infrastructure in closed areas: Active Directory, GPOs, DNS/DHCP, desktops and VMware/Hyper-V servers, backups, patching (STIGs/WSUS), logging and incident response. Collaborate with ISSOs for RMF/NIST/JSIG compliance, maintain documentation, support audits and accreditation, and provide onsite after-hours support as needed.

Manage and secure classified IT systems in closed areas: Active Directory user/group administration, desktop imaging and hardening, virtual server management, monthly OS/application patching per STIGs, DNS/DHCP/GPO maintenance, logging and incident response, RMF compliance support, documentation, and audit/accreditation activities.

The IT Systems Administrator II manages IT systems in classified environments, focusing on user account administration, desktop and virtual server support, security compliance, and system documentation.

Administer and maintain IBM i (AS/400) platform to ensure stability, security, performance, and high availability for RPG-based ERP/WMS. Own DR/replication (Maxava), backup (BRMS), system upgrades, performance tuning, security/audit, automation (CL/QShell/PASE/Python/Rexx), integrations (SFTP/APIs/EDI), and documentation/runbooks across hybrid on-prem Power Systems and PowerVS cloud environments.

Serve as the single-point IT administrator for multi-site operations: manage hardware and endpoints, networks and VPNs, user onboarding/offboarding, software accounts and licenses, Jira ticketing, vendor coordination, security/compliance, and responsive on-site support across multiple states.

Provide hands-on administration and support for servers, endpoints, identity services, backups, and core productivity platforms in a school environment. Monitor system health, respond to incidents, manage devices (Windows, macOS, ChromeOS, iPadOS), administer Active Directory and Google Workspace, maintain patching and security, support Microsoft 365 and Google Classroom, and coordinate vendors and disaster recovery activities.

The POS & IT Systems Administrator configures, maintains, and troubleshoots POS systems and IT infrastructure across locations, ensuring system performance and secure connectivity.

The IT Systems Administrator is responsible for supporting and maintaining IT infrastructure, resolving incidents, documenting systems, and ensuring compliance with cybersecurity standards.

As an IT Systems Administrator III, you'll manage system infrastructure, enforce security, troubleshoot technical issues, lead IT projects, and mentor junior staff, ensuring compliance and efficient operations.

The IT Systems Administrator manages and optimizes the Workday Financials platform, ensuring system stability and compliance while enhancing business processes.

The IT Systems Administrator will manage internal IT operations, handle onboarding, oversee SaaS tools, and support compliance efforts.

The IT Systems Administrator will manage technology infrastructure, including cybersecurity, device management, SaaS platforms, user provisioning and internal technical support, while collaborating strategically with leadership.

The IT Systems Administrator will manage server and network infrastructures, support enterprise applications, ensure cybersecurity compliance, and provide end-user support while leading technology improvement projects.

IT Systems Administrators implement and support the enterprise server infrastructure, managing OS, hardware, networking, and security. They provide support to the IT Service Desk and troubleshoot systems, ensuring compatibility and security standards.

Owner of company internal IT: provide employee IT support, manage devices/accounts and MDM, administer Google Workspace/M365 and identity, maintain office networks and AV, enforce security controls, build onboarding/offboarding and IT processes, document systems, and develop the IT roadmap and budget while supporting engineering and manufacturing environments.

Provide end-user IT support and system administration for a multi-site manufacturing environment: manage Hyper-V servers, backups/DR, patching, ERP/JDE administration, printer and workstation support, documentation, compliance (CMMC), and lead local IT projects while handling helpdesk escalations and finance-related ERP support.

Maintain, configure, and operate servers, virtual environments, networks, and backups. Troubleshoot hardware/software, manage virtualization (VMWare), implement automation and IT strategy, lead helpdesk support, and handle capacity, storage, database performance, disaster recovery, and data protection.

Provide on-site end-user and infrastructure support: deploy and maintain desktops, servers, network devices, Azure services, virtualization, IP cameras, printers, MDM, patching, backups, and ticketed incident resolution across multi-site operations.

Lead design, deployment, and maintenance of enterprise IT systems and data center operations. Provide expert technical support, security incident response, patching, backup/recovery, inventory and access management, and documentation. Collaborate cross-functionally, mentor junior staff, and improve onboarding/offboarding and operational processes to ensure infrastructure reliability and security.

Lead and maintain Windows and VMware datacenter infrastructures, drive upgrades and migrations, implement automation and monitoring, manage projects and cross-functional teams, mentor staff, ensure 24/7 availability, compliance, and continuous improvement.