10 years of experience managing large infrastructure up to 2000 node cluster.Exposure to Linux (Redhat, Suse, Ubuntu), Solaris, AIX,HP-UXWorked with IT leaders Like IBM and TATA.Nominated as Technical Resource in IBM (2008) while working in IBM.Good understand on open source products to provide cost effective solution.Mail ServerDNS, DHCPNIS, NFS, LDAP, PDCIPS(snort), firewalls (iptables, ipcops)Apache/TomCat/LAMPAsteriskCentralized logging Server (syslog-ng)Network Monitoring System (Nagios)Infrastructure as a Service (NIMBUS) I have 10 years of experience managing large infrastructure running on Linux and Unix. I can suggest cost effective solution to the client using various open source solutions. I have prior experience working with American clients and dedicated to client's success. I have been worked for IBM and TATA with different positions and good recognition as well.