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 classified IT infrastructure, ensure security compliance, and maintain systems in support of national security missions, focusing on SIPRNET tasks and classified environments.

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 Systems Administrator supports naval projects, maintaining servers and networks, deploying OpenShift clusters, automating tasks, and ensuring system integrity. They will also utilize Atlassian tools and lead teams in best practices with a focus on security and efficiency.

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

As a Senior Linux System Administrator, you'll manage classified IT systems, ensuring compliance with security standards, maintaining Linux servers, and supporting a secure operational environment.

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 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.

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 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.

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 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.

The Senior Systems Administrator will enhance IT services by implementing systems, managing networking and virtualization, mentoring juniors, and ensuring infrastructure quality.

The Senior System Administrator will configure, maintain, and upgrade servers, and provide technical support within an Agile team environment for future projects.

As a Senior System Administrator, you will manage IT systems administration in a hybrid Windows and Linux environment, collaborate with teams, ensure security compliance, and maintain documentation. You will troubleshoot issues, configure software, and work on classified systems 24/7, occasionally traveling up to 10% of the time.

Responsible for the design, deployment, and maintenance of Linux/UNIX server systems and software, with virtualization and project support responsibilities.

Provide combat system simulation support, implement network solutions, and maintain accreditation for Government wide area network usage.

Seeking a Senior System Administrator with strong expertise in Information Processing, Middleware solutions, and Application Management, requiring significant hands-on experience and a Secret Clearance.

The role involves providing IT systems administration in Windows and Linux environments, requiring troubleshooting and integration skills, while ensuring compliance with security and certification requirements.