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Systems Administrator Resume

San Jose, CA

PROFESSIONAL SUMMARY

Over 7 years of IT experience with emphasis on Application Server Installation, Configuration, Deployment, Administration and Production support on heterogeneous systems like AIX, LINUX, Sun Solaris and WINDOWS environment with different versions of WebSphere Application Server 4.0/5.1/6.0/6.1/7.0/8.0 and IBM HTTP Server (1.3/2.0/6.X/7.0/8.0), Apache, Jboss

TECHNICAL SKILLS

Operating Systems: Windows 95/98/NT/2000/2003/XP, Sun Solaris 5.X, AIX 5.2/5.3/6.0, Linux, HP-UX 11i
Programming Languages: C, C++, Java, J2EE, SQL,
Web/Application Servers: IBM WebSphere Application Server 7.0/6.x/5.x/4.0.x, IBM WebSphere Portal Server 6.1/6.0, IBM WebSphere MQ 5.3/6.0, IBM Http Server 1.3.26.x/2.0.42.x/2.0.47.x/6.0, IIS 5.0/6.0, Sun One Web server 6.0/6.1, Tomcat 4.0.Jboss 5.0,5.1
Web Tech/Scripting: HTML, XML, Java Script, Servlets, JSP, JACL, Jython, and XML Config/ANT/Shell Scripts
Databases: Oracle 8i/9i/10g, IBM DB2 7.1.X, 8.1.x, 8.2.x, SQL Server and Microsoft Access
Other Tools: WMQ 6.0/5.3, Tivoli Performance Viewer, Wily Introscope 5, 6, 7,HP Site Scope, Rational Rose, Hummingbird Exceed, putty, Build forge, Clear case, IBM Heapdump Analyzer and IBM JCA

PROFESSIONAL EXPERIENCE

Confidential., San Jose CA 07/2012-Till Date
Systems Administrator

  • Involve in WebSphere Upgrade project which is the Upgrade of the Application server from 6.1 ND to 8.0 ND
  • Installed, configured WebSphere Application Server 7.0 ND/8.0 ND, IBM HTTP server 7.0, IBM HTTP server 8.0 on Windows 2008 Enterprise
  • Configured web-server interfaces, virtual hosts, HTTP transports for Application Server instances and applications
  • Configured WebSphere Deployment Manager and Application Server profiles in clustered (horizontal and vertical) environment to utilize the advantages of Failover and load balancing in multi-node environment
  • Configured WebSphere resources like JDBC, Data sources, J2C and JMS. Configured and setup SSL for security
  • Configure and install Jboss 5.1 AS on Linux server
  • Configured data sources and Qconnection factories for the applications at eBay, Inc.
  • Install applications on Jboss farms
  • Involve in support for the current version of WebSphere 6.1 ND running the piX application
  • Synchronized the web content between different environments.
  • Involve in monthly deployment schedule as per the outage plan defined in release calendar
  • 24/7 on call Support / Hot pager rotation support

Environments: WAS 6.X/7.0/8.0, IBM HTTP Server 6.1/7.0/8.0 , Ant scripting, Oracle 11g, Window Server 2003,Windows Server 2008,Linux server, JMeter, Jboss 5.1

Confidential, Bentonville, AR 04/2010- 07/2012
Application Server Administrator

  • Installed, configured WebSphere Application Server 6.x/7.0 ND/XD, IBM HTTP server7.0, build forge on AIX, Linux and Windows.
  • Installed Fix Packs and Ifixes recommended by IBM.
  • Administered JBoss, Tomcat and Apache HTTP Server
  • Involved in JMeter test plan creation and execution for performance and stress testing
  • Configured WebSphere Deployment Manager and Application Server profiles in clustered (horizontal and vertical) environment to utilize the advantages of Failover and load balancing in multi-node environment.
  • Configured web-server interfaces, virtual hosts, HTTP transports for Application Server instances and applications.
  • Configured a virtual web farm to mitigate the licensing cost and the overhead of creating separate instance for the increasing traffic.
  • Merged the plug-In using the IBM plug-in merge tool to route the traffic to the applications hosted on different cells.
  • Configured WebSphere resources like JDBC, Data sources, J2C and JMS. Configured and setup SSL for security.
  • Automated the tasks of the deployment and the WebSphere installation using the Buildforge.
  • Implemented SSO using the Wal-Mart active directory as a default realm and clear trust.
  • Created user roles and groups for securing the resources using LDAP Authentication.
  • Monitored applications and Websphere Application server performance through Tivoli performance viewer and tuned the system - caching, queuing, JVM parameters, DB connection pooling.
  • Analyzed the application server performance and resources like data sources and JMS using HP diagnostics.
  • Analyzed the head and java core using IBM head dump analyzer and java core dump analyzer to find the memory leaks and performance issues.
  • Prepare ITIL documents to standardize the WebSphere environment across all the environments.
  • Followed BMC patrol change control procedure to Manage Change across all the environments.
  • Synchronized the web content between different environments.
  • 24/7 on call Support / Hot pager rotation support.

Environments: WAS 6.X/7.0, Websphere portal server 6.0, Endeca 7.0, IBM HTTP Server 6.1/7.0, HP Diagnostics 9.5, HP performance center 9.5.2, RSA 6.0, Buildforge7.1.1.4, Ant scripting, JACL, Jython, Oracle 11g, DB2, AIX5.3/5.2, Jboss, JMeter, Window Server 2003

Confidential, Northbrook, IL 12/2009 - 04/2010
WebSphere Application Server Administrator

  • Installed and configured WebSphere Application Server 6.x/7.0 ND, IBM HTTP server on sun Solaris and Windows
  • Setup of IBM HTTP Server v 6.0 as a managed and unmanaged node to communicate with WebSphere Application server by installing and configuring the Web server plug-in provided by WebSphere Application Server
  • Implemented creation of servers and cluster groups in WebSphere Application Server and supported the whole environment configuration and applications deployed
  • Build and deployment of applications using Buildforge and clear case as a version control tool
  • Worked as onsite lead consultant and leading the offshore team to ensure timely completion of the assigned duties
  • Created user roles and groups for securing the resources using LDAP Authentication
  • Configured TAI++ for implementation of new authorization and policy servers
  • Migrated Applications from WebSphere application server 6.0 to 7.0
  • Monitored applications and WAS performance through ITCAM and load runner and tuned the system - caching, queuing, JVM parameters, DB connection pooling
  • Developed UNIX shell scripts, JACL, and Jython scripts to automate the WebSphere Administration like build and deploying customer applications, monitor application state, backup/restore of deployment manager configurations
  • Installed EARs, WARs and configured application specific JVM settings, web container parameters using the admin console and WSADMIN
  • Worked on PMR`s with IBM to find effective solutions to various problems
  • Configured WebSphere resources like JDBC, Data sources, J2C and JMS. Configured and setup SSL for security
  • Participate in implementation of EJB Datacenter Failover scenarios
  • 24/7 on call Support/Hot pager support

Environments: WebSphere Application server 6.0/7.0, WebSphere portal server 6.0/6.1, IBM HTTP Server 6.0, ITCAM, LoadRunner, RAD 7.5, Buildforge, Ant scripting, Oracle 10g, DB2, Sun Solaris 5.10, Window Server 2003

Confidential, Chennai, India 12/2008 - 12/2009
WebSphere Application Server Administrator

  • Installed and configured WebSphere Application Server 6.0/6.1 ND, Apache and Sun one web servers on HP-UX and AIX.
  • Installed Fix Packs and Ifixes recommended by IBM.
  • Migrated the configuration settings and applications from WAS v6.0 to v6.1 using GUI migration wizard, wsadmin and backupconfig provided with the WebSphere.
  • Configured WebSphere Deployment Manager and Application Server profiles in clustered (horizontal and vertical) environment to utilize the advantages of Failover and load balancing in multi-node environment.
  • Worked as a lead for the offshore team and coordinating the work accordingly between the team members
  • Installed and configured MQ Series in AIX.
  • Worked with MQ development team, creating queue managers, defining queues, channels, listeners and adding queue managers to clusters.
  • Message Broker Administration including checking Message Flows, Transforming different types of data to target systems
  • Configured web-server interfaces, virtual hosts, data sources, HTTP transports for Application Server instances and applications.
  • Configured Security for WebSphere Application environment using LDAP registry IBM Directory Server and enabled SSL implementation with in the cells.
  • Monitoring application log files, Application Server Performance, and tuning for DB Pool connections.
  • Used automated scripts to perform routine management tasks on WebSphere environments like monitoring Disk Space, CPU & Memory Utilization.
  • Used thread analyzer to analyze java core dumps.
  • Used heap Analyzer to analyze heap dumps.
  • Involved in Load Tests working with developers, database administrators, and others, looking for deadlocks.
  • Tested & deployed J2EE applications on Websphere Application Server using wsadmin scripts
  • Wrote UNIX shell scripts to perform remote deployment of J2EE application.
  • 24/7 on calls Support.

Environment: IBM WebSphere Application Server 6.x/7.0, IBM WebSphere MQ 5.3/6, DB2 7.x/8.x, IWWCM 6.0, IBM HTTP Server 1.3.x/2.0.x/6.0, Apache tomcat, r Policy Server 5.5, 6.0, HP-UX 11.31, AIX 5.3, HTML, Java Script, XML, JSP, Servlets, ANT

Confidential,, MI Hyderabad, India 11/2007 - 12/2008
WebSphere Application Server Administrator

  • Installed, configured and maintained WebSphere Application Server 5.x/6.x, Apache/IBM HTTP server on HP-UX and Linux
  • Configured WAS, IHS for the production environment and testing each server individually
  • Configured WebSphere resources like JDBC providers, JDBC data sources, session database and connection pooling for database connection
  • Enabled Authoring and rendering environments
  • Installed patches and cumulative fixes for WebSphere application servers
  • Deployed the application code, Change working directory, process definition to verify log directory changes etc.
  • Configured Web Server interfaces, virtual hosts and transports for WebSphere Application Server
  • Monitored application log files, Application Server Performance, and tuning for DB Pool connections
  • Involved in Load Tests of applications, determining the bottlenecks
  • Worked with Operations and Helpdesk to set up monitoring and alerts
  • Edit mapping files to put in URL rewrites or redirect statements
  • Working on SEV1 Tickets for problem determination and resolutions
  • Worked with IBM support to open PMRs for several issues
  • 24/7 on call Support/Hot pager support for several accounts

Environment: IBM WebSphere Application Server 5.x/6.x/7.0, IBM WebSphere Portal Server, DB2 7.x/8.x, IWWCM 6.0, IBM HTTP Server 1.3.x/2.0.x/6.0, Netegrity Site Minder, 1, HP-UX 11.31, AIX 5.3, Solaris 10, IBM Directory Server 5.1, IBM WebSphere Studio Application Developer (WSAD) 4.0, MKS, HTML, Java Script, XML, JSP, Servlets, ANT

Confidential, Chennai, India 11/2006 - 11/2007
WebSphere Application Server Administrator

  • Installed, configured, administered and supported WebSphere Application Server ND 6.0/5.1 on AIX and Windows environment
  • Installed WebSphere MQ 5.3, fixes and configured all MQ related objects like Queue Manager, Clusters, Queues, Cluster Channels for Point to Point, Hub and Spoke messaging system
  • WebSphere Application Server performance tuning using Tivoli performance viewer
  • Used thread analyzer to analyze Java core dumps. Used heap Analyzer to analyze heap dumps
  • Used IBM pattern modeling tool to analyze memory issues
  • Debugging of the application problems in deployment time, runtime and in load test
  • Developed Jacl scripts and shell scripts to automate the maintenance process of the WebSphere and recovered the backed up WebSphere configuration using XMLConfig tool
  • Worked on IBM Tivoli Storage manager (ITSM) for data backup and recovery
  • Created and configured JDBC providers and data sources to support database-backed applications for Oracle and DB2/UDB. Installed and configured IBM HTTP Server and iPlanet web server
  • Configured the web server reveries proxies for the securing the application servers
  • Used reverse proxy Mechanism for load balancing a cluster of web Application servers
  • Defined synchronized and persistent IBM MQ Series Queue Manager, Channel Managers and Queues
  • Created user roles and groups for securing the resources using LDAP and local operating system authentication
  • Created and configured resources for JDBC, J2C, and JMS based on the application requirements and configured Message Listener Ports for an application, which uses MDBs to trigger the queues
  • Installed and configured multiple IBM HTTP Servers to participate in clustering using CSS, with remote WAS plug-in
  • Implemented security using Global Security with IBM Directory Server
  • Migrated existing applications from WebSphere 5.x versions to 6.0 using waspreupgrade and waspostupgrade tools, Used Application Assembly Tool (AAT) in deploying J2EE Application archives (JAR, WAR, and EAR) on IBM WebSphere Application Server
  • Trouble shooting and Performance tuning using Tivoli performance viewer and Thread analyzer
  • Monitored server performance, network traffic to reduce performance bottleneck
  • Applied software maintenance, program patches and keeping the system software releases current. Effectively interacted with the users on a daily basis, decreasing downtime and increasing user productivity
  • Troubleshoot hardware and software problems, and interact with IT staff or vendors in performing complex testing, support and troubleshooting functions
  • On call 24/7 supports for IHS, WebSphere and WebSphere Portal Production Servers

Environment: IBM WebSphere Application Server 5.1.x/6.0.x/6.1, LDAP server, ITSM, DB2 UDB, UNIX (HP-UX, Solaris, AIX, Linux), z/OS, Win2000, Apache, IBM HTTP Server, Tivoli, Java, JSP, EJB, TOAD

Confidential, Chennai, India 06/2005 - 11/2006
WebSphere Application server Administrator

  • Installed WebSphere Application Server 5.0/5.1 ND and created dmgr, Application server profiles on Linux and windows. Updated fix packs and refresh packs on WebSphere Application Server 5.0/5.1
  • Worked closely with developers to define and configured application Servers, Virtual Hosts, Web Applications, Web resources, Servlets, JDBC drivers and Servlet Engines-as well as deployment of EJBs across multiple instances of WebSphere
  • Wrote scripts for accessing remote Admin Servers, cleaning up logs during back-ups
  • Implemented Horizontal and Vertical Clustering, Performance tuning and trouble shooting of IBM WebSphere Application Server 5.0/5.1
  • Used reverse proxy Mechanism for load balancing a cluster of web Application servers
  • Installed WebSphere MQ 5.0, fixes and configured all MQ related objects like Queue Manager, Clusters, Queues, Cluster Channels for Point to Point, Hub and Spoke messaging system
  • Defined synchronized and persistent IBM MQ Series Queue Manager, Channel Managers and Queues
  • Added redirects and proxy statements in the proxy servers
  • Used Siteminder for single sign-on and LDAP infrastructure is used to authenticate and authorize users
  • Achieved Work Load Management by creating Clusters in WAS 5.0
  • Handled Staging and production environments as part of the application deployment
  • Installed EARs, WARs and configured application specific JVM settings, Web container parameters using the Admin Console and WSCP/Wsadmin scripts
  • Enabled security for the Admin Console and application components
  • Occasionally used Resource Analyzer/Tivoli Performance Viewer to monitor WebSphere Applications and tuned the environment accordingly like changing the JVM Heap, Connection Pool sizes
  • Used command line tools wsadmin (WSCP) and XMLConfig occasionally as an alternative to the Admin Console
  • Created users and groups in LDAP Servers and mapping them to the enterprise applications running on WebSphere Application Server
  • Used LTPA for authentication for enable the global security
  • Performed migration of some of the applications from WAS 5.0 to WAS 5.1
  • Assembled and Deployed the application in staging, in productions, following change management practices and 24/7 support, worked in shifts
  • Troubleshot Admin Server start-up issues, Java code defects after deployment, and class path issues by checking the JVM logs, plug-in logs and the Webserver logs
  • Performed routine management of WebSphere Environment like monitoring Disk Space, CPU Utilization

Environment: IBM WebSphere Application Server 5.0/5.1, WebSphere MQ 5.0, DB2 7.x/8.x, AIX 5.3, Siteminder 6.x, Linux, Windows 2000, IBM Directory Server 5.1, WTE 5.1.1, IBM WebSphere Studio Application Developer (WSAD) 4.0, HTML, Java Script, XML, JSP, Servlets, ANT

EDUCATION/TRAINING

  • Masters in Computer Science Engineering.

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