I am system administrator dealing mostly with unix server spread across data center in US, Australia,UK, India. Supported projects for GE in USA having data center in Globix/Equinox with 3000 servers. Good hands on experience with RHEV, Vmware, Citrix Xen virtualization along with IAAS(Openshift) AWS. Supported mostly Linux,HP-UX, Solaris server running apache/ngnix, jboss/tomcat. Also good at automation via ansible or shell scripting.