<p>We are looking for an experienced Systems Administrator to join our team on a long-term contract basis in Corona, California. In this role, you will oversee the maintenance and optimization of both Windows and Linux server environments, ensuring seamless operations and compliance with service-level agreements. This position requires a proactive and collaborative individual who can manage complex systems while driving efficiency and reliability.</p><p><br></p><p>*** For faster responses, please send updated resumes to julio.enriquez@roberthalf(.com) ***</p><p><br></p><p>Responsibilities:</p><p>• Provide operational support for a large-scale server infrastructure, including 600 Windows Servers (Windows Server 2016 and newer) and 120 SUSE Linux Servers.</p><p>• Perform regular patching, monitor server performance, and ensure service availability in alignment with established service-level agreements.</p><p>• Manage and upgrade VCenter 7 and newer versions, maintaining 40+ ESXi hosts.</p><p>• Administer virtual desktop infrastructure (VDI) pools and remote desktop services using Citrix technologies.</p><p>• Troubleshoot and resolve advanced incidents and service requests escalated from lower support tiers.</p><p>• Utilize or develop technical tools for tasks such as backups, restoration, failover processes, log analysis, and performance monitoring.</p><p>• Create and maintain standard operating procedures to ensure security and operational efficiency in systems administration.</p><p>• Upgrade and manage Dell Technologies storage arrays to meet organizational needs.</p><p>• Collaborate with application development, security, and project management teams to implement new systems and services.</p><p>• Develop automation tools and processes to enhance scalability and streamline operations.</p>