SUMMARY

• Innovative IT professional with 7 years of proven experience in planning, developing and maintaining high availability mission critical system administration and networking systems
• Seven years of advanced multiplatform UNIX system administration and programming experience, specializing in system administration, networking and security, SAN, Cluster, VMware
• Configured Servers like DNS, DHCP, Samba, NFS, NIS, Send mail, http, daemon, Ftp, Telnet, SSH, Firewalls and package management using RPM patch management
• Configured RAID, LVM (Extending, Shrink), Quota, and Grub modification, Kernel Update, Patching and String
• Good knowledge of kickstart, jumpstart, VERITAS cluster manager and Linux clustering
• Experienced with satellite server custom software channels and config channels, also deploying files, packages, script, rpm and upgrading Red hat satellite server
• Experience with HPSA server automation tool, VMware, vSphere Client, Oracle VM and data center migration
• Experienced in Logical Volume Management on Linux with LVM, Weblogic server, Apache, tomcat
• Hand on experience in HTTP, HTTPS, SMTP, FTP, SFTP, DHCP, DNS, SNMP TCP/IP, UDP, ICMP, VPN
• Hands - on experience in the Integration of Confidential products OTA (4 and 5), device manager and tracking
• Experience in GSM technology, UICC and SIM card, 3G and 4G LTE deployment solutions
• Proven ability to automate server builds using kick start, GRUB, Linux kernel tunable
• Experienced with operating system support for products/packages including Oracle, Sybase, DB2 UDB, Apache, WebSphere / Web Logic, Tivoli Storage Manage (TSM), ESP scheduling, Netcool monitoring
• Proficient in configuring NFS, Crash Recovery, Change Management, back and system monitoring
• Experience in installation, maintenance and configuration of Oracle 10g/11g database and RAC on Linux
• Experienced with Cisco 2600/3600/4000/7200 series routers, Cisco catalyst 1900/2900/5000 series switch, Cisco 3550 multilayer switch, Confidential workstations, IBM servers, Blade servers and printers
• Has knowledge and experience in the area of networking concepts, TCP/IP, BGP, OSPF, RIP, IGRP, EIGRP, PPP
• Experienced with Unix Administration EMC SAN Administration, NetApp and NAS administration
• Programming experience in C, C++ and excellent skill in Microsoft Office
• Possess good analytical and problem solving capabilities with excellent communication, documentation skills

TECHNICAL SKILLS

Operating System: RHEL 3/4/5, Solaris 9, 10, Windows (98/2000/XP/Vista/Windows7), MAC OS

Networking: LAN/WAN administration, VPN, NAT, SSH, BIND, NIS, Cisco IOS

Programs/Utilities: Firewall IP-Chains, Iptables, NAT, Winroute, DMZ

Proxy: Squid 2.x, MS Proxy 2.x

Security: Netfilter/iptable, SSH, SSL, TCP Wrapers

Protocols: TCP/IP, SNMP, NFS, SMB, LDAP, DHCP, SSH,FTP

Routing Protocols: RIP & RIP V2, IGRP, EGIRP, OSPF, BGP, PPP

Database: Oracle 10g and 11g, RAC, SQL Server, DB2, Sybase

Scripting/Languages: Korn Shell, Bash, C and C++

Storage and backup: Tivoli Storage Manager, Veritas Net Backup, EMC, SAN, NAS

Virtualization: VMware, vSphere ESX 4.0, Snapshots and cloning, Xen Kernel

Web/App Servers: Apache, Tomcat, Web logic

Hardware: Confidential Proliant, IBM x Series, Blade Servers

Monitoring: Sitescope, MRTG, Nagios, Cacti, nmap, tripwire

PROFESSIONAL EXPERIENCE

Linux SME (System Admin)

Confidential, Minneapolis, MN

Responsibilities:

• Involved in deliver superior levels of availability and security through different oversight and maintenance of infrastructure systems
• As Subject matter experts, had to govern the standards and services for servers delivered by AFI’s three primary hosting providers IBM, CSC
• Responsible in maintaining and performance monitoring 2000+ servers test (E1), QA (E2) and production environment (E3) all AIX and Linux web, application and database servers
• Had to generate SRM (Service Resource management) report like high CPU utilization, memory consumption, capacity utilization, entitlement consumed, disk performance and have to circumvent it
• Involved in operation Readiness in which we have to run QA check script on all Linux and AIX servers to check
• Established command and control during incident bridges and drove vendor teams towards identification and circumvention where appropriate
• Responsible for Ameriprise midrange patch update program, application and server decommission
• Refresh and achieve infrastructure strategies and solutions by working with the Architecture team to develop architectures that define our technology platforms and used cases
• Involved in change management, incident management and cab meeting representing hosting operations from Unix server services
• Responsible for replacing the Memory Dimms and update Firmware version, HMC upgrade, involved in installing oracle client 11g R2, Tivoli installation, Servers health check
• As SME, need to involve in end user computing, network infrastructure services, information security services,Release delivery program and distributed system storage
• Responsible for Manage Now and RCR (change request) for all change happen in Unix servers
• Perform 24X7 production support (on-call rotation) for the server infrastructure environments

Environment: Red Hat Linux (RHEL 5.5,6.1), AIX, Oracle 11g, TCP/IP, DNS, Websphere

System Administrator

Confidential, Austin, Texas

Responsibilities:

• Involved in installing OS to platform, integrating, deploying, and testing the global solution within the customer’s infrastructure
• As a Solution integrator, I was responsible for integration proposal, integration and deployment which includes OTA Database Installation & OTA5.2 Application and LTE products Installation
• Contributed to the development of IT tools to facilitate the integration, maintenance and customization of each of the company's solutions
• 3G and 4G LTE solution deployments in the NORAM region
• Responsible for installing RHEL 5.5, Oracle 10g and 11g, WebLogic Server 11gR1 (10.3.3), TOMCAT, Apache, VMware ESX server, cloning VM, Oracle VM Agent improvement, VERITAS Cluster Manager Java console
• Worked with VMware vspher client, Oracle VM and Oracle database, Weblogic, Java Servlet, TOMCAT, Apache
• Contributed to the transition from project to support: ensured the supportability of the applications, did the warranty check point, and transferred to support when necessary
• Practical on hand experience in Application Development, Design, Testing and Implementation. Along with experience in getting business requirement and analyzing the data gathered
• Responsible of the Monitoring Hardware and Software (SuMoS and NGM) for this solution and tripwire tools
• Managing platform upgrades with all associated third party software, custom solutions, API integration to different GSM elements (CSG, Provisioning and Billing System, Intelligent Network), troubleshooting, acceptance testing with the customers, as well as the 24/7 support and maintenance
• Responsible of the end-to-end integration team for SIM OTA (remote SIM cards management) and Device Management (DM) licensed solutions to different customers ( Confidential, Confidential, Confidential & Confidential, Confidential, Confidential .) in the US and Canada
• Experience in GSM architecture, UICC card, SIM card, mobile devices
• Supported and assisted the customer after the installation

Environment: Red Hat Linux (RHEL 5.4, 5.5), SunOS sun4u sparc, Oracle 10g &11g, TCP/IP, DNS, DHCP, Web logic, Tomcat, Apache, POP3, VMware, vSphere ESX

System Administrator

Confidential, Orlando, FL

Responsibilities:

• Involved in installation and configuration operating system Red hat Enterprise Linux (RHEL5.3 and RHEL 5.4) in test, QA and production environments on Confidential physical servers and Virtual Machines
• Worked with VMware ESXi 4.0, Oracle Linux, Oracle VM and third party Confidential Software Automated system
• Worked on Confidential SAS software policy for automated installation and configuration of RPM and Confidential proprietary software packages
• Designed, managed, implemented/ supported: Backup/Recovery/Archive, Security Startup/Shutdown, Mass Storage (SAN/NAS), OS Installations/Patches, Hardware/Software installation, Batch scheduling, Data center Migration, Application and test and production servers performance
• Performed quarterly kernel, firmware updates and Linux OS patching as per PCI and SOX compliance
• Involved in configuring and installing Web logic, tuxedo, Netback up, VERITAS, Oracle client, Sybase client, Db2 client and Dollar Universe on different levels of test servers
• Worked in adding new Users and groups and give sudo access in test and development servers and central file synchronization via rdist, sudoers, authorized keys, passwd, shadow, group, cluster and GPFS
• Worked with DBA team in installing and configuring Oracle 10 g and 11g, Sybase, Db2 client v 8.1
• Worked in fixing Oracle client permissions after DBT does the install, adding disk space to Oracle's ASM Oracle RAC and Oracle VM DB servers (HDS) as both using Oracle's ASM to manage the raw disk space
• Coordinated with application team in installation, configuration and troubleshoot issues with Apache, Web logic, OVPA, tuxedo application, Linux cluster on production and test servers
• Used VERITAS Volume manager to create disk groups, volumes, volume groups, and RAID’s
• Installation of the VCS client agent with Confidential -SA, attach the VCSOne client policy in Confidential SA, create a client credential file, configure VERITAS cluster server One by Symantec Client Daemon 5.0.1, configuration program
• Involved in back up, firewall rules, LVM configuration, monitoring servers and on call support
• Configured Crash Dumps, Linux Kernel Tunable, OS patching/upgrading on Linux Servers
• Decommissioned a Test Server SAN, unmount file systems and destroy disk groups, removed from LUN masking database, removed from zone set DNS, removed data IPs, removed backup IPs, removed profile from OSS, EM, CM, IP/NETWORK, PEG cluster
• Worked on in obtaining and installing SSL client s, any application that calls the CCOB (Credit Card Obfuscation) web service must use two-way SSL, which means it must have a client SSL, so requested, verified, saved and installed
• Involved in shell scripting for system/application in automating server task, installing and monitoring applications and data feeding file transfer and log files
• Worked in solving tickets issued on and problems related to development, test and production servers
• Linux technical support and prepared technical documentation

Environment: Red Hat Linux (RHEL 5.3, 5.4), Confidential -UX, SunOS, Oracle 10g &11g, Sybase, DB2 Client, TCP/IP, DNS, DHCP, NFS, Web logic, Tuxedo, Apache, POP3, SMTP, VMware, vSphere ESX

System Administrator

Confidential, Menomonee Falls, Wisconsin

Responsibilities:

• Involved in installing and configuring operating system Red hat Enterprise Linux in Production, QA and test environments on standalone IBM servers and IBM Blade Center Hardware
• Configured Kickstart for RHEL 5 to perform image installation through network
• Worked with Red hat Linux tools like RPM to install packages and patches and managed virtualized OS
• Experience on Satellite Server in deploying packages, creating RPMS, installing script files, adding users and groups, creating logical volume
• Worked on SAN/EMC storages with HBA card configuration and different level of RAID configuration.
• Worked on network connectivity, SAN storage, creating LVM and taking TSM backup
• Administered Linux servers for several functions including managing WebSphere, Apache/Tomcat server, mail server, Oracle database and build firewalls in both development and production
• Creating, managing user accounts and group and creating files and directories permission as Confidential ’s standard
• Co-ordinate with Middle ware team in installation, configuration and troubleshoot issues with WebSphere Application Server and Apache/Tomcat server on Linux
• Installed/Configured/Maintained/Administrated the network servers DNS, NTP, NFS, SENDMAIL, SYSLOG and application servers Apache, WebSphere, Web logic, and Samba server
• Extensively worked with the LAN/WAN, firewalls and routing for Internet and Intranet connectivity using different protocols like TCP/IP, DHCP, HTTP/s, FTP, SMTP & SSH
• Involved in TSM back up, netcool monitoring, ESP scheduling, DMZ firewall rules, configure iptables and iptables init script, start and stop init script for Apache and other application server of Confidential ’s standard
• Created korn shell scripts to automate cron jobs system maintenance. Scheduled cron jobs for job automation
• Modifying user’s password policies, group policy, UID and GID assignment policies
• Monitored the performance of the system using top, sar, ps, prstat, vmstat, netstat, iostat and cpuinfo to check the CPU utilization, bottlenecks of I/O devices, memory usage and network traffic
• To troubleshoot network connectivity used ping, netstat, Arp, dig, ifconfig, and trace route commands,login to the remote system using sudo,putty and telnet
• Linux technical support and prepared technical documentation for check in verification
• Regular backing up of critical data and restoring backed up data

Environment: Red Hat Linux (RHEL 5), Oracle 10G, TCP/IP, DNS, DHCP, NFS, Apache, POSTFIX, POP3, SMTP, Oracle

System Administrator

Confidential, Atlanta

Responsibilities:

• System Installation and configuration (RHEL, Solaris, Windows Servers)
• Account,user and group administration, Permissions policy management and quota implementation.
• Systemperformance monitoring, tuning andlog management
• TCP/IP Networking troubleshooting and Linux Network Administration
• Installation, configuration, support and security implementation on following services:
• Management of Firewall, iptables
• Implement and maintain server virtualization using VMware
• Installation and configuration of database systems e.g. MySQL, Oracle
• System monitoring and remote connection management usingtelnetandSSHconnections
• Experience is setup Storage area Network (SAN) and NAS and file systembackup and restore
• 24x7 on-call rotation for support of production systems

Environment: Sun Solaris, Red Hat Linux (RHEL 4), Oracle, TCP/IP, DNS, DHCP, NFS, SAMBA, Apache, VMware

System Administrator

Confidential, Houston, Texas

Responsibilities:

• Installation and configuration of Linux (RHEL), CentOS and Sun Solaris servers in production, QA and test
• Operatingsystem installationand configuration (methods including Kickstart, jumpstart), disc partition set-up, patch administration, package management including kernel upgrade
• Setup, maintenance, and operation of company-wide services such as DNS (BINDv8), mail (sendmail), www (Apache/SSL), Samba, and DHCP
• Implemented automated installations with Kickstart/Jumpstart, installed RPMs and packages.
• Always installed servers with the assumption that they will be unprotected on the network and therefore must be very secure.
• Configured storage using LVM (Logical Volume Manager) to configure volume group, logical and physical partitions and importing new physical volumes.
• Implemented RAID configuration for redundancy members of a team
• Configured Telnet, FTP, sFTP, SSH, iptables, Samba for the servers
• Configured, designed and implemented IP networks and internetworks using RIP, OSPF, EIGRIP, BGP4, IPsec, VPN, trunks and VLAN, F5 load balancer
• Deploy, configure and maintain Open Fiber based SAN/NAS units, Dell blade server, Confidential proliant server
• Performed reconciliation of checks and datamigrationfrom one tier to another
• System Design - designed, deployed and maintained multiple Linux-based FTP/MySQL servers for end users
• Disaster Recovery - Designed, built and maintained disaster recovery data center for company
• Networking Support -Routing, WAN/LAN, switching and VPN support
• System Deployment -Implemented new system imaging procedures to improve consistency in end-user computer system deployment
• Scripting and task automation using crontab, bash, korn and shell scripting
• Developed and implemented a network monitoring solution to monitor disparate networks

Environment: s: Red Hat Enterprise Linux, Sun Solaris, Windows 2003,TCP/IP, BIND, SAMBA, APACHE, Cisco, SSH

System Administrator

Confidential, Atlanta, GA

Responsibilities:

• Software and Hardware install and upgrades of Solaris/Linux systems
• Installed and Configured vsftpd, telnet, dhcp, httpd, ftp, ssh, iptables, squid Samba for the servers
• Configured kickstart files, installed RPMs & Packages and Installing Patches
• Installed and administered Debian GNU/Linux systems providing IS infrastructure (mail, web, FTP)
• Managed, and performed the upgrade of Symantec/VERITAS Netback up infrastructure from version 4.5x to 6.x in mixed UNIX/LINUX/Solaris environment
• Designed and implemented an automated system installation and configuration system, based on Solaris Jumpstart and GNU
• Responsible for Confidential level auditing compliances like system security, network security and patches
• Experience in debugging scripts and written shell scripts to reflect the changes to many UNIX systems
• Experienced in installing and implementing VMware ESX server, VMware Virtual center, virtualization tools
• Involved in hardware installation and maintenance of workstations, servers, and other supporting hardware.

Environment: s: Red Hat Enterprise Linux, Fedora core, Solaris, Apache, Squid, BIND, Web logic, Sendmail

System Engineer

Confidential

Responsibilities:

• Network Administrator: Configured different types of Cisco switches, Cisco routers and firewalls
• System Administrator: Configuration and monitoring of different UNIX based servers, the servers configured are namely Proxy, DNS, firewall and mail servers
• Planning, designing and maintain Confidential wide local area network using Layer2 and layer3 network elements
• Maintained a File Server running UNIX, Iptables, Squid, Samba, Ftp, Telnet, sFTP
• Installing, designing, configuring and troubleshooting various security, authentication, and monitoring & notification servers in Linux/Windows platform
• Hands on experience of routing protocols including OSPF, BGP, RIP, EIGRP
• Testing Cisco VoIP solution using ADSL modem and Voice hub would support four phone lines with primary line
• Strong knowledge of DNS and network tools (ping, trace route, etc.)
• Coordinating with the supporting unit regarding installation of Satellite antennas and associated shelter
• Operating, controlling, supervising, multi-layer LAN and WAN routers, switches, bridges
• Designing, commissioning and implementation of Fiber Network and micro wave link
• Was responsible for providing support on a 24/7 basis

Environment: s: Red Hat Linux, Fedora Core 5, Cisco Routers, switch, Squid, DNS, DHCP, Windows 98/2000/XP