Top Senior System Administrator Jobs

The Senior Systems Administrator optimizes enterprise systems, leads projects, provides IT support, and manages core infrastructure and technical solutions.

The Senior System Administrator will manage system administration tasks, including system integration, security, and performance monitoring while mentoring teams and providing technical support.

The Senior System Administrator will manage IT systems in a mixed Windows and Linux environment, resolve technical issues, collaborate with teams, and maintain security requirements, ensuring systems operate securely and efficiently.

The Senior System Administrator supports CNO Capabilities, maintaining operational IT environments, managing hardware installations, and improving workflows.

Provide senior-level administration and governance of Microsoft 365, focusing on the Power Platform and integrations, while promoting secure and scalable solutions.

As a Senior Systems Administrator, you will lead IT infrastructure projects, provide technical support, ensure security compliance, and mentor junior staff, all while improving systems and automating workflows.

Lead administration and maintenance of Windows/Linux servers, virtualization, and network infrastructure. Manage Azure and Microsoft 365 (Exchange, SharePoint, Teams). Oversee endpoint and cloud security (CrowdStrike, Defender, Netskope), administer Okta, lead infrastructure projects, provide Tier 3 support, documentation, and mentor junior staff.

The Senior System Administrator manages and maintains computerized systems in a cGMP environment, ensuring compliance and supporting users while coordinating with IT and QA.

The Senior Systems Administrator will support IT systems management, including troubleshooting, maintenance, and system security compliance, while configuring Linux systems and virtualization infrastructure.

The Senior Systems Administrator manages system administration tasks for production and non-production environments, oversees maintenance, troubleshooting, and documentation, while providing guidance to team members.

The Senior System Administrator - Microsoft Platforms manages Microsoft systems like SharePoint and Azure, provides IT project direction, and mentors junior staff.

The Senior System Administrator will oversee the administration and security of Linux systems, manage updates, and ensure operational stability in cloud environments.

Senior Systems Administrator responsible for IT systems support, troubleshooting, virtualization management, and scripting for system configurations and dataflows.

Responsible for day-to-day systems administration, support of Linux environments, troubleshooting, managing maintenance tasks, and providing technical guidance to the team.

As a Systems Administrator, you'll manage virtualization, servers, networking, and storage while leading internal process improvements and providing technical solutions in a secure environment.

Responsible for supporting server and desktop operating systems, virtualization, storage management, and hardware troubleshooting. Leadership and communication skills are essential.

The Senior System Administrator will oversee IT operations, manage networking infrastructure and collaboration tools, and provide executive support, while leading onsite IT efforts in Reston.

As a Sr. System Administrator, you will monitor and maintain systems in a classified environment, ensuring security and operational efficiency, support program teams, and troubleshoot issues while providing customer interaction and support.

The Senior System Administrator will provide IT systems administration in a mixed Windows and Linux environment, supporting critical government missions. Responsibilities include troubleshooting, software installation, and collaboration with cybersecurity professionals, while maintaining systems and obtaining required certifications.

The Senior System Administrator will manage IT systems in a mixed Windows and Linux environment, collaborate with teams to resolve complex IT issues, and ensure cybersecurity measures are maintained. Responsibilities include systems administration, documentation, and training, alongside maintaining secure environments and conducting troubleshooting.

The System Administrator supports IT systems maintenance, troubleshooting, and operations, providing Tier 1 and Tier 2 support and configurations for various OS, as well as managing virtual machines and networks.

The Senior System Administrator will evaluate system specifications, install and configure enterprise systems, and provide operational support, ensuring systems security and functionality while managing network performance and hardware requirements.

Provide support for the design, configuration, and deployment of Windows Server environments, including virtualization and disaster recovery solutions.

The Senior System Administrator will design, configure, and support Windows Server environments, manage virtualization, and implement disaster recovery strategies.

Ensure immediate response to outages, support mainframe systems, analyze and resolve systems problems, and monitor software and hardware performance.