¿ Manage and maintain Windows 2016, Windows 2012, Windows 2008 and Windows 2003 operating systems, installed in a standalone and clustered configuration. ¿ Manage and maintain Virtualization Environment consisting of VMWare ESX Server and Virtual Center. ¿ Manage and maintain Company's DFS infrastructure. ¿ Manage and maintain Company's FTP application centrally hosted in the regional data centers both secure and non secure connections. ¿ Manage and maintain Chevron's Application Hosting Infrastructure consisting of Citrix, IIS, SiteMinder and F5 (Load Balancing Network Appliance). ¿ Develop and maintain PowerShell scripts and other automation tools as necessary. ¿ Work effectively with other Chevron support groups (e.g. Network Support, Data Storage Support, Active Directory Support, etc.) ¿ Monitor system performance and address issues relating to memory, network throughput, high CPU, etc. ¿ Perform various other proactive support tasks required to support the windows infrastructure. ¿ Plan and execute Disaster Recovery tests. ¿ Be familiar with all aspects of troubleshooting and take part in the team's on call rotation, in which support personnel are expected to be available on a periodic 24x7 basis.