USA Managed and maintained Windows and Linux servers, ensuring 99.9% uptime. Configured and administered Active Directory, Group Policies, and DNS/DHCP. Deployed and secured cloud-based solutions in AWS/Azure. Designed and implemented network security policies and firewall configurations. Automated repetitive tasks using PowerShell and Bash scripting. Led system upgrades, migrations, and security patches to minimize vulnerabilities. Provided technical support and training to internal teams. Provide day-to-day support to the Servers/Desktops/Networks (includes administration, preventivemaintenance, and upgrading the Servers/Desktops/Networks) Maintaining client hosted domain sites and databases Configured and maintained Cisco networking equipment, including routers, switches, and firewalls. Implemented VLANs, VPNs, and QoS policies to optimize network performance. Conducted regular security audits and penetration testing. Monitored system performance and responded to network incidents proactively. Designed and developed 20+ responsive websites for clients across various industries. Assisted in disaster recovery planning and business continuity testing.

Provide day-to-day support to the Servers/Desktops/Networks (includes administration, preventivemaintenance, and upgrading the Servers/Desktops/Networks) Installation, Configuration, Administration and troubleshooting of Windows Server- 2003/2008/2012,Windows XP, Windows 7,Windows 8 and 8.1. Maintaining, Configuring and Troubleshooting DNS, AD integrated DNS, DHCP and servers. Installation, Configuration, Administration and troubleshooting of Linux (Fedora, Redhat Linux,Centos)Servers Installation and Configuration of Cisco Layer 2 Switches and Layer 3 Switches and Various Routers. Configuration and troubleshooting of switches operating VLAN, VTP, STP, VLAN Routing Working on Routing Protocols- IP addressing, Static Routing, EIGRP,BGP peering, RIP, NAT Handling and Troubleshooting Lease Line Installation, configuration and maintenance of CPanel on Centos 6x Servers and Hosting domain sites ,databases and applications Maintaining more than 60+ client hosted domain sites and databases Installation and configuration and implementation for OpenERP 6 and 7.0 Projects on Ubuntu and Centos Servers. Migration Successfully done from Win2003 to Win2008R2 domain and Win2003 to Win2012 Implemented Win2012 Domain creation with polices and Linux based Mail server Installation, configuration and maintenance of ORACLE 11g R2( Data Guard,ASM, RMAN, PL/Sql,EXP/IMP,Datapump,Migration, Tuning- AWR, ADDM, TKPROF) Installation and configuration of Fusion Middleware 11gR2 Forms and Report Servers

Experience with Azure and AWS Domain Controller deployment Experience with proactive approach to Active Directory monitoring: Health, Replication, and Security Provide day-to-day support to the Servers/Desktops/Networks (includes administration, preventivemaintenance, and upgrading the Servers/Desktops/Networks) Installation, Configuration, Administration and troubleshooting of Windows Server-2008 R2/2012,2016 Windows 7,Windows 8 and 8.1 and Windows 10 Maintaining, Configuring and Troubleshooting DNS, AD integrated DNS, DHCP and servers. Installation, Configuration, Administration and troubleshooting of Linux (Fedora, Redhat Linux,Centos)Servers Installation and Configuration of Cisco Layer 2 Switches and Layer 3 Switches and Various Routers. Configuration and troubleshooting of switches operating VLAN, VTP, STP, VLAN Routing Working on Routing Protocols- IP addressing, Static Routing, EIGRP,BGP peering, RIP, NAT Handling and Troubleshooting Lease Line Managing, maintaining and configuring all IT resources available in the organization including Servers, Switches, Computers, Printers, Plotters Installation and configuration of CCTV and DVR systems and Finger Print time and attendance account systems. Installation, configuration and maintenance of VMware Server and VMware guest’s Installation, configuration Site to Site VPN connectivity and VPN security Routine maintenance comprising cleaning log files, temp files. Monitoring and checking hardware related issues. Installation, configuration and maintenance of databases (MSSQL, MySQL, PgSQL, oracle). Installation, configuration and maintenance of MacAfee and Symantec Virus scan Enterprises

Provide day-to-day support to the Servers/Desktops/Networks (includes administration, preventivemaintenance, and upgrading the Servers/Desktops/Networks) Installation, Configuration, Administration and troubleshooting of Windows Server- 2003/2008,Windows XP, Windows 7. Maintaining, Configuring and Troubleshooting DNS, AD integrated DNS, DHCP and servers. Installation, Configuration, Administration and troubleshooting of Linux (Fedora, Redhat Linux,Centos)Servers Maintenance and configuration of Web Servers (Apache), Postfix/Qmail Mail servers and Samba (File and Print Sharing from UNIX) Installation, configuration and maintenance of MacAfee Virus scan Enterprises Installation, configuration and Troubleshooting Network Printers and Scanners Setting up, configuring & Support of Desktops Win XP/Windows7 and MS office 2007/2010 environments. Configuring and troubleshooting Cisco PIX, ASA Firewall, Cisco routers, Switches and wireless. Installation and Configuration of Cisco Layer 2 Switches and Layer 3 Switches and Various Routers. Configuration and troubleshooting of switches operating VLAN, VTP, STP, VLAN Routing Working on Routing Protocols- IP addressing, Static Routing, EIGRP, RIP, NAT, ACL Handling and Troubleshooting Lease Line. Cisco Routers (3600, 6500 Series), and Switches (2950, 3650, 3750 Series) Configurations and Troubleshooting. Deployment and management of Cisco Call Manager 4 x, 6 x Configuration of Call manager Express (CME) on 2800 series Routers Deployment of Cisco IP Phones - Series: 7910, 7940, 7960 Cisco VPN, Content Filtering, Network Access configuration with Sonic Wall, IPTABLES. Taking backup and upgradation of flash for routers, switches using TFTP server. Troubleshooting commands like Ping, Trace route, extended ping and other commands. Setting up & managing Local Area Network / Wide Area Network to maintain maximum network uptime Installation & configuration MS SQL 2005, 2008, MYSQL. With knowledge of SQL cluster, replication of MS SQL. Trouble Shooting Hardware , Operating Systems and Software Installation, Configuration and Troubleshooting of Linux/Unix OS, Samba, Apache, NFS, LDAP Migrating Websites, domains, databases and applications from old server to a new server and data center to data center Get involved and support in Planning and executing the Migration of Apache/Tomcat/IIS Servers & Database on MySQL /MSSql. Installation & configuration of VMware EXS server, Configure Virtual Machine & Install OS Monitoring system Performance of Virtual memory, Managing Swap space, Disk utilization and CPU utilization and performance Installation of Red Hat Enterprise Linux 5.0/6.0, Apache web server, Tomcat App server & MySQL Database server.

Tidal Park, Chennai. Provide day-to-day support to the Servers/Desktops/Network (includes administration, preventivemaintenance, and upgrading the Servers/Desktops/Network) Provide day-to-day support for the Database/Application Servers (includes administration,preventive maintenance, and upgrading the Database/application servers) Installation, Configuration, Administration and troubleshooting of Windows Server-2003/2008, Windows XP, Windows 7 Installation, Configuration, Administration and troubleshooting of Linux (Fedora, Redhat Linux,Centos)Servers Maintenance and configuration of Web Servers (Apache), Mail servers and Samba (File and PrintSharing from UNIX) Installation, Configuration and Troubleshooting of services on Linux/Window Servers. Services include NFS, SSH, Mail Server, Firewall, Proxy etc. Installation & configuration MS SQL 2005, 2008, MYSQL. With knowledge of SQL cluster, replication of MS SQL. Installation, configuration and maintenance of ORACLE 10g ( Data Guard,ASM, RMAN, Sql &PL/Sql, EXP/IMP,Datapump,Migration, Performance Tuning) Maintaining, Configuring and Troubleshooting DNS, AD integrated DNS, DHCP. Installation, configuration and maintenance of Symantec Endpoint Server, network printers and scanners Installing and configuring the Active directory win 2003 and win2008 Troubleshoot AD (replication/DNS/account issue) Installation & configuration of VMware server, Configure Virtual Machine and Guest OS. Maintenance of WAN Links between Country and branch offices Designed and Configuring the WAN infrastructure consisting of dedicated Internet connectivity to Branch office, Cisco 2600 series router, Cisco 3500 Switches, PIX firewalls Create and Troubleshoot VPN (site to site, DMVPN, Remote accessVPN Server) network connectivity issues with routing protocols such as EIGRP, OSPF, RIPV2 and static. Deployment and management of Cisco Call Manager 4 x, 3 x Configuration of Call manager Express (CME) on 2800 series Routers Deployment of Cisco IP Phones - Series: 7910, 7940, 7960 Maintain, configure router, ASA 5510, Layer 2,Layer 3 switches and fix any related issues Installation and Configuration of L2 and L3 devices & Configuring and setting of VLANs. Configuring VLAN, Voice VLAN, VTP, STP and PoE Configuring and Managing group Policy. Managing Active Directory sites and replication Services. Installing and upgrading the various database servers (Oracle, MySQL, MSSQL) and application tools on the provided hardware and software Create and maintains all databases required for development, testing, usage. Stop/Start database and database server instance, set up replication. Installing and upgrading the various application servers (Websphere, Weblogic, Glassfish,Jboss,Tomcat) and application tools on the provided hardware Administrating and Managing the Users/Groups on the Linux/Windows Server. Monitoring and Management of services running on servers using tools and utilities available. Installation & Management of Active Directory services, DHCP, MS Proxy, and Source Code control using SVN, CVS. Perform regular and on-demand Server backups and recoveries. Create scripts for automated backup jobs. Maintaining archived data on DLT tape. Backed up Windows 2000, 2003, 2008 and Red hat Linux servers on a nightly basis Troubleshoot networks, systems, and applications to identify and correct malfunctions and other operational difficulties

management, SSL, Permissions, Configuring Anti- Spam, POP, IMAP, OWA, ActiveSync. Troubleshooting and configuring email clients like Microsoft Outlook 2003/2007 and Outlook Express, Browser IE, Firefox etc. Managing, maintaining and configuring all IT resources available in the organization including Servers, Switches, Computers, Printers, Plotters Installation and configuration of CCTV and DVR systems and Finger Print time and attendance account systems. Maintenance and configuration of Web Servers (Apache), Postfix/Sendmail Mail servers and Samba (File and Print Sharing from UNIX) Installation, configuration and maintenance of VMware ESXi 5.5 Server and VMware guest’s Installation, configuration and maintenance of Centos 6.5 KVM Server and KVM guest’s Installation and Configuration of Proxy Server (Squid with Real Time Internet Monitoring) Installation, configuration Site to Site VPN connectivity and VPN security Installation, configuration and maintenance of databases (MSSQL, MySQL, PgSQL, oracle). Installation, configuration and maintenance of MacAfee and Symantec Virus scan Enterprises Installation, configuration and Troubleshooting Network Printers and Scanners

Client: Southern Railway Providing primary system and server support Installation, Configuration, Administration and troubleshooting of Windows Server-2000/2003 Installation, Configuration, Administration and troubleshooting of UNIX(Solaris) and Linux (Fedora,Redhat Linux, Centos)Servers Maintenance and configuration of Web Servers (Apache), Mail servers and Samba (File and PrintSharing from UNIX) Installation, Configuration and Troubleshooting of services on Linux/Window Servers. Services include NFS, SSH, Mail Server, Firewall, Proxy etc. Installation & Management of Remote Installation, Proxy, DHCP, Print Server, RAS, WSUS & Active Directory on Windows 2000 Server. Install & Configure Symantec Antivirus 9.0/10.1 Symantec Client Security using the Symantec System center on servers & clients. Deployed, supported and maintained equipment for cable internet service (Cisco 1800 and 2800series routers, Catalyst 2950 and 3550/3560 switches) Configuration and troubleshooting of switches operating VLAN, VTP, STP, VLAN Routing Working on Routing Protocols- IP addressing, Static Routing, EIGRP, RIP, NAT, ACL Handled Quantum DLT tape drives, Daily Data Backup & Restoration Configuration and troubleshooting of DELL Power Edge 2900 and HP Blade Servers. Configured different RAID levels RAID0, RAID1 and RAID5 Managing Trend Micro IMSS SMTP, POP3 Servers, IWSS web security server. Experience in implementing, maintaining and troubleshoot LAN / WAN, Network Security including NAT configuration, ACL, Site to Site VPN, VLAN and Cisco PIX, Iptable Firewalls. Installation, Configuration and Administration of Red Hat Enterprise Linux server and its services like Apache, FTP, Squid proxy, Samba and Databases (MySQL, Oracle). Maintaining, Configuring and Troubleshooting DNS, AD integrated DNS, DHCP, and FTP. Installation and Configuration of Exchange Server, SQL server and Oracle on Win 2000 server. Hands on experience in installation, configuring and troubleshooting in Linux based mail servers are Postfix, Courier mail and web interface (squirrel mail).

Providing primary system and server support Responsible for installation, maintenance and administration of Desktops (Windows 98,WinXP) and servers (WinNT4,Windows2000) across the Organization and Client Sites Installed Hard disks, Floppy drives, CD Drives, Sound Blaster cards, CPU, Memory, Power supply unit, Network card, Video graphics card, Hard disk controller card on PC systems Installation, administration and maintenance of WINS, DHCP and DNS servers Troubleshooting firmware and hardware related problems for Desktop and Laptops and printers. Networking and providing support for Windows, Macintosh and Linux issues. Responsible for applying patches and service pack installations Performing scheduled backup of mission critical data and user data on requests Travelling to client sites to help with installs, deployment, and troubleshooting. Handling and Troubleshooting Lease Line. Responsible for diagnosing, maintaining & resolving hardware, software & end users problems.