Top Systems Administrator Jobs

Provide Windows systems administration for an enterprise government environment: install, configure, patch, and maintain Windows Server 2016 and Windows 10, SCCM patching, Active Directory, SQL Server, Nutanix virtual servers, backup solutions, and documentation. Interface with clients, follow security mitigations, and support datacenter projects and change control.

Support, maintain, grow and optimize RedHat 6.x and CentOS systems. Provide enterprise infrastructure support (email, voice/data, Windows servers, virtualization, storage). Perform application deployments/upgrades, ensure availability via monitoring and disaster recovery, act as second-tier Service Desk support, and participate in 24/7 on-call rotation.

Support, maintain, optimize RedHat/CentOS systems and enterprise infrastructure (Windows, virtualization, storage, SAN). Perform application deployments, monitoring, disaster recovery, provide second-tier support to Service Desk, and participate in 24/7 on-call rotation.

Maintain, support, and optimize RedHat/CentOS Linux systems and enterprise infrastructure. Provide application deployments, upgrades, virtualization and storage support, second-tier Service Desk escalation, disaster recovery, and participate in 24/7 on-call rotation.

Designs, implements, administers, and secures enterprise network and server infrastructure. Manages Cisco networking, Windows Server environments, virtualization (VMware/Hyper-V), Microsoft 365/Exchange, backups, and security tooling. Leads projects, mentors junior staff, supports disaster recovery, and responds to incidents while ensuring regulatory compliance and high availability.

Administer and maintain company IT systems and servers, troubleshoot technical issues, apply patches and updates, manage backups and security configurations, document procedures, and provide system support to users to ensure reliable operations.

Provide DevOps systems administration for Windows-based AWS hosting (IIS, RDS, WordPress): automate builds and configuration, perform migrations and patching, troubleshoot issues, monitor reliability, manage configuration, and maintain technical documentation.

Provide foundational enterprise systems support: install, configure, monitor, patch, and troubleshoot Windows/Linux servers, AD, Exchange/Office365, VMware, storage, backups, and email security. Assist with onboarding/offboarding, runbooks, change management, and collaboration with network, security, database, and application teams under senior guidance.

Manage and support enterprise Windows, Linux, and UNIX systems, virtualized and cloud-hosted infrastructure (C2E). Ensure system reliability, security, configuration compliance, troubleshooting, documentation, and collaborate with stakeholders on projects and integrations.

Administer and maintain Windows (and some Linux) servers and infrastructure, perform patching, backups, system upgrades, hypervisor management, hardening, and troubleshooting. Support cybersecurity analysis by collaborating with security analysts and network engineers, leveraging scripting/automation, and ensuring operational compliance and optimal system performance.

Provide Windows-centric systems administration (with some Linux) including installs, configuration, patching, backups, hardening, upgrades, and infrastructure monitoring. Troubleshoot complex issues, support security analysis and audit log review, collaborate with security analysts and network engineers, and maintain operational compliance and documentation in a fast-paced, mission-driven environment.

Provide Windows and Linux systems administration across on‑premises and virtual environments supporting law enforcement missions. Perform AD and core services administration, OS patching, backups, monitoring, incident troubleshooting, security hardening, and assist with upgrades, migrations, and disaster recovery while maintaining compliance and documentation.

Provide first-level technical support for end users: triage and resolve tickets via phone/email, troubleshoot Microsoft desktops/servers and Office, perform remote installs/configuration/backups, document resolutions, escalate when needed, participate in on-call rotation, and contribute to preventative resources and user satisfaction.

Support, administer, and secure Windows/Linux servers, virtualization, storage, and network infrastructure for mission-critical launch range operations. Provide sysadmin tasks (patching, backups, AD, troubleshooting), support LAN/WAN and telecommunications, and lead cybersecurity activities including vulnerability mitigation, intrusion detection, and compliance. Mentor junior staff and coordinate technical efforts to maintain reliable, secure IT systems.

Provide senior technical leadership for Air Force IT systems, focusing on infrastructure management, system availability, and security while coordinating with development teams and managing AWS GovCloud environments.

The Enterprise Systems Administrator manages the firm's servers and cloud platforms, ensuring security, stability, and optimal performance, while providing technical support and maintaining software applications.

The Global Payroll Systems Administrator will manage global payroll operations, optimize payroll systems, partner with various departments, and ensure compliance through data analysis and reporting.

Manage, implement, configure, and optimize regulated business applications (ELN, LIMS, Spotfire, PPM). Develop test plans and scripts for CSV, ensure GxP and 21 CFR Part 11 compliance, coordinate with IT and QA, support upgrades/patches, maintain data integrity, provide first-line support, and train end-users.

Install, configure, and maintain LAN/WAN, servers (physical and virtual), and operating systems. Monitor system integrity and availability, review logs and backups, analyze resource consumption, control user access, manage software installations/licenses, and support network modeling, analysis, and coordination.

Administer and maintain batch automation, job scheduling (OpCon), and secure file transfers (SFTP); support enterprise applications, troubleshoot production incidents, respond to service desk requests, coordinate upgrades/patches, and improve automation to ensure reliable daily operations.

Provide day-to-day support for library computing devices and services: install, configure, and troubleshoot hardware/software and peripherals; manage Apple, Windows, and Chromebook endpoints; resolve tickets; maintain asset inventories and documentation; assist with scripting/automation, software deployment, endpoint security, and patron-facing technology services; collaborate with central IT on projects.

Provide hands-on Windows systems administration across locations: install, maintain, and troubleshoot hardware, software, applications, and connectivity; remediate incident tickets; perform performance and load testing; engage clients to gather requirements; recommend infrastructure improvements; maintain compliance; and conduct training and knowledge transfer.

Provide onsite systems administration for Windows and Red Hat Enterprise Linux environments, managing DNS, DHCP, Active Directory, server replication, troubleshooting OS/hardware integration, and maintaining DoD security certification requirements with an active Top Secret clearance.

Design, implement, and support global core infrastructure and manufacturing systems. Ensure availability, security, performance, and resiliency of data centers, cloud, virtualization, and OT systems. Provide L2/L3 support, lead incident response, participate in 24/7 on-call rotation, manage capacity planning, vendor relationships, disaster recovery, patching, and documentation. Collaborate with engineering and stakeholders to deliver standardized, automated infrastructure solutions.

Design, engineer, administer, and secure enterprise mobile device solutions (MDM) across iOS, Android, Windows, and macOS. Manage policy, software/patch deployment, device provisioning, asset lifecycle, compliance reporting, and Tier-3 troubleshooting. Support RMF/IATT/ATO activities and integrate mobile platforms with enterprise identity, authentication, and monitoring in DoD/IC environments.