Top Systems Administrator Jobs

Provide systems administration for Linux environments; use automation tools (Chef, Puppet) to manage configurations; manage and administer logging platforms (Splunk or ELK stack); FluentD administration a plus. Work independently and with teams, communicate effectively, adapt to shifting priorities, and provide strong customer service and problem solving.

Administer and maintain MES (Siemens Opcenter/MESA) infrastructure and servers, ensure high availability, perform daily monitoring and troubleshooting, prepare SOPs and validation documentation, support change management and on-call response, and lead infrastructure projects in a semiconductor cleanroom environment.

Designs, implements, and supports network and server infrastructure. Manages network devices, patches, firmware, capacity planning, virtualization (VMWare), Windows and Linux servers, security updates, and vendor/system access. Monitors network health, documents changes, partners with teams on IT projects, and maintains compliance and operational reliability.

Senior Systems Administrator responsible for designing, installing, maintaining, and supporting servers, networks, telephony/VoIP, virtualization, backups, monitoring, and security. Works with IT and non-IT staff, handles Level 1–2 support, prepares project status reports, and drives infrastructure improvements and disaster recovery planning.

Senior systems administrator responsible for deploying web applications, managing Linux servers, writing Puppet modules, supporting WSO2 middleware, maintaining Git/Subversion, working with dev teams to troubleshoot, and developing tools to improve infrastructure.

Onsite Unix Systems Administrator to inventory, administer, and harden Sun Solaris servers; install/configure new systems, migrate applications/databases, implement backups, failover and disaster recovery, diagnose hardware, manage patches, and document procedures and capacity planning.

Senior Systems Administrator to manage and improve agency infrastructure, lead special technical projects (AD/GPO redesign, VDI refresh, DR tests), troubleshoot network/server performance, implement backup and endpoint/EDR solutions, and support Exchange migration and cabling/diagramming initiatives.

Onsite systems administrator to triage and support CA commercial off-the-shelf products, document processes, coordinate with vendors, and maintain Windows, SQL, Unix, and Microsoft System Center environments.

Onsite senior systems administrator responsible for Linux server management and deployment, web application deployment, Puppet module development, maintaining WSO2 middleware, managing Git/Subversion, and supporting ELK/ActiveMQ-based infrastructure while collaborating with development teams.

Provide on-site systems administration and production support: apply patches and updates, perform routine application, middleware and database maintenance, deploy releases, monitor service performance, use automation and job-scheduling tools, coordinate with DBAs and hosting/help-desk, and drive continual service improvements.

Onsite Windows systems administrator to plan and implement migration from Server 2003 to Server 2008 domain controllers, raise domain functional level, upgrade Exchange, review and remediate Active Directory and Group Policy for security/availability/disaster recovery, produce a detailed project plan for Change Management, and document all changes.

Install, configure, test, and support server and desktop hardware/software; respond to incident and request tickets; monitor application servers and diagnose performance bottlenecks; document server builds, disaster recovery, and procedures; review audit logs and security and participate in application server implementations with IT staff.

Onsite systems administrator to migrate Microsoft Project Server 2003/PWA to Project Server 2013/PWA. Responsibilities include reviewing existing SharePoint/SQL environments, designing architecture, installing/configuring hardware and software, data migration, authentication and security planning, performance/capacity and DR planning, BI/reporting planning, writing documentation, and conducting knowledge transfer and operational support.

Administer and customize the Thunderhead application, estimate effort, implement enhancements, manage environments and deployments, run system/unit/integration tests, perform 2nd/3rd level production support and root cause analysis, monitor production, manage security permissions, and create template and form specifications.

Administer and support FileNet systems: plan and implement upgrades, patches, and migrations; migrate Image Services documents and reconcile; monitor systems, diagnose and fix issues; manage document classes, security, recovery, and repository maintenance.

Administer and support FileNet platform: plan and implement upgrades/patches, migrate Image Services documents, perform reconciliation reporting, monitor and troubleshoot systems, maintain document classes, security, recovery, and repositories.

Administer and support FileNet environments: plan and apply upgrades/patches, migrate Image Services documents, run reconciliation reporting, monitor and troubleshoot systems, and perform document class, security, recovery, and repository maintenance.

Administer and upgrade FileNet servers, perform migrations of Image Services documents, run reconciliation reporting, monitor and troubleshoot systems, provide mission-critical support, and maintain document classes, security, recovery, and repositories.

Designs, implements, maintains, and troubleshoots server infrastructure and applications. Manages virtualization, backups, disaster recovery, licensing, monitoring, and security per NIST/ITIL. Provides escalated support, mentors junior staff, documents processes, and reports project status. Onsite in Phoenix with on-call responsibilities.

Lead administration and security of mixed Windows and RHEL systems in AWS. Perform provisioning, patching (STIG), backup/disaster recovery, RBAC/AD user management, advanced troubleshooting, performance tuning, security hardening, compliance remediation, automation with Bash/PowerShell, and documentation while mentoring junior admins and coordinating with cybersecurity teams.

Support and maintain Windows and RHEL servers in AWS, assisting with provisioning, backups, patching, STIG application, troubleshooting, RBAC/AD administration, scripting (Bash/PowerShell), monitoring, and compliance documentation while collaborating with cloud and cyber teams. On-site in Crystal City, VA.

The Systems Administrator manages IT systems infrastructure, providing implementation, troubleshooting, and maintenance support, ensuring operational efficiency and compliance with security standards.

The IT Systems Administrator II manages and optimizes the enterprise infrastructure, including Microsoft Azure, Hyper-V, and identity management systems, while supporting TrueCare's healthcare mission.

Maintain and secure global IT infrastructure, provide 2nd/3rd-level support and on-call coverage, administer Azure/AWS, Active Directory/Entra ID, Microsoft 365, Nutanix, VMware and backups, lead patching and vulnerability remediation, manage deployments/migrations at branch locations, monitor systems, coordinate vendors, and follow project timelines to meet SLAs and security/compliance requirements.

Provide remote and on-site IT support for MSP clients, monitor and maintain systems to prevent downtime, manage Windows Server and Windows 10 environments, administer Office 365, troubleshoot networking (TCP/IP), use RMM tools for system management, assist with Azure/AWS cloud support, document tickets, and mentor junior staff.