Certifications

Summary

Over six years of experience in administering, integrating, supporting middleware technologies like WebSphere Application Server, WebSphere Portal Server, Tomcat, JBOSS & WebSphere MQ and web servers IHS, Sun One, Apache, Sun One directory server and CA SiteMinder on wide variety of platforms like Solaris, Linux and windows.

Experience

• Expertise in administration, installation, configuration and troubleshooting WAS 5.X/6.X, JBOSS 3.2/4.x, Tomcat, WMQ 5.3/6.0 SUN ONE Directory Server. Web Servers (IBM HTTP Server 1.3.28/2.04.7/6.0, Apache Web Server).
• Extensive experience in driving the effort for major migrations including WAS 5.x to 6.x, 6.1 to 7.0 and WebSphere MQ 5.3 to 6.0
• Experienced in design, creation of MQ resource objects Queue, Listener, and Channels etc.
• Experienced in integrating IBM MQ with WAS for JMS messaging
• Proficient in providing HA solutions for WAS, Tomcat and JBOSS
• Hands on Experience in configuring LTPA, LDAP, SSL and Digital Signatures
• Well versed in different stages of implementing the Workload Management (WLM) and failover using vertical & horizontal clustering for efficient use of resources on single and multiple machines
• Experienced in JVM performance analysis using heap, thread dumps and tuning the JVM arguments.
• Experience in Tivoli Performance Viewer, Log Analyzer, Application Assembly Tool (AAT) for WebSphere
• Experience in using Java Application profilers like JProbe, YourKit and OptimizeIt
• Experience in enterprise software monitoring tools like IBM ITCAM, BMC Patrol, Nagios, SiteScope & ProavtiveNet
• Well experienced in troubleshooting and performance tuning using Resource analyzer and log analyzer and well versed with tuning the Garbage Collector
• Experience in load generation tools like Apache JMeter, Grinder
• Experienced in creating and managing WebSphere Environmental variables for Data Sources and JDBC Driver paths and other creating shared libraries and references
• Configured and administered Clusters, Deployment Manager, JDBC Connection Pools, WMQ
• Deployed Applications (WAR, JAR, SAR and EAR) in Clustered environment
• Applied Fixpacks, eFixes, Refreshpacks, cumulative fixpacks for WAS using UpdateInstaller and update.sh and automating it
• Developed many jacl/jython/shell scripts/Perl to automate the maintenance process
• Provided support for development, Test and production environments and in activities such as load testing, troubleshooting and performance tuning
• Provided 24/7 on-call support for production
• Ability to initiate to implement new concepts and applications
• Efficient in working in tighter schedules and meeting deadlines.

Skill Set

Operating Systems

Windows 2000/2003/XP, Solaris, AIX, Linux (RedHat, SuSE)

Programming Languages

C, C++, Java, J2EE, SQL, PL/SQL.

Web/Application Servers

IBM WebSphere Application Server 6.x/5.x/4.0.x, MQ IBM Http Server 1.3.26.x/2.0.42.x/2.0.47.x/6.0, SunOne Web Server 6.0/6.1, Tomcat 4.0, JBOSS 3.2/4.x

Web Technologies/Scripting

HTML, XML, Java Script, Servlets, JSP, JACL, Jython, ksh/bsh scripts.

SOA Appliances

IBM Datapower XS40 & XI50

Networking Protocols

TCP/IP, HTTP/HTTPS, RMI/IIOP, SOAP, FTP, SFTP, Telnet, SSH, SSL

Professional Experience

Confidential,
GA (August 2009 - Present)
Sr. Websphere Administrator

Roles and Responsibilities

• Responsible for 24 x 7 support of Macy’s and Bloomingdale’s e-commerce websites (production and non-production) in a AIX environment.
• Part of Site Build and Launch team which is responsible for administration of WAS and IHS in several multi-celled and multi-clustered high availability testing and production environments.
• Deploying enterprise J2EE applications on Websphere AS 6.1 (production and non-production environments) like EAR and WAR through AntHill Pro, admin console and ksh scripts
• Making configuration changes to the applications, app and cache servers based on the requests received from the dev and QA team
• Place production websites (macys & bloomingdales) into batch/realtime mode as needed.
• Monitoring the application and gc (garbage collection) logs and debugging errors related to the configuration of the 3 tier architecture
• Creating and modifying JNDIs, configuring data sources and uniform resource locators (URLs) pointing to resources in order to gain expected results for the load tests.
• Grabbing thread and heap dumps in production boxes in case of a hung thread situation.
• Recycling the testing environments and individual servers/nodeagents
• Keeping track of disk space utilization on various LPARs and maintaining them below the threshold.
• Monitoring the performance of the production environments (for Macy’s and Bloomingdale’s) through IBM ITCAM and BMC Patrol.
• Experience with Akamai Edge Servers, IBM Lotus Notes and First Choice Web ticketing system.

Environment and Tools

IBM WebSphere Application Server 6.1, AIX, Windows XP, JDK, J2EE, JNDI, DB2, IBM HTTP Server, IBM ITCAM, FC Web 3.0, IBM Lotus Notes, BMC Patrol, Splunk

Confidential,
CA (Mar 2007-July 2009)
Middleware Applications Engineer

Roles and Responsibilities

• Responsible for installation, configuration and maintenance of JavaEE applications on JBOSS, WAS , IHS, Apache in a multi clustered high availability environments
• Installed and configured IBM WebSphere Application Server 6.x/5.x, JDBC drivers and Servlet engines along with trouble shooting and recovery on AIX, Linux (RedHat, SuSE).
• Involved in capacity planning, implementation of Websphere 6.x
• Configured Server Groups and Clones for High availability and Fail over capability.
• Migration from Websphere 6.1 to 7.0 at enterprise level
• Created resources specific to an application like data sources, shared libraries and setting like class loader policies from within the WebSphere Application Server Toolkit editor.
• Managed the security and performance optimizations for EJB containers and web applications in IBM WebSphere, IBM HTTP Server and Apache web server.
• Responsible for the administration of Websphere MQ.
• Migration of Websphere MQ 5.3 to 6.0.
• Involved in creation of MQ resource objects like Queue, Listeners, Channels etc
• Responsible for application changes across different platforms - dev, testing, UAT and production.
• Package, build, Integrate and deploy enterprise J2EE applications on WebSphere 6.1.0.9/6.0.2.13/5.x that involves EAR (Enterprise Archives) and WAR (Web Archives).
• Automated application install, uninstall and application enhancements through shell scripts, JACL, Jython, Perl scripts using Cron and at job scheduling utilities.
• Developed JACL, Jython, Perl, scripts and shell scripts to automate the maintenance process of the WebSphere and recovered the backed up WebSphere configuration using XMLConfig tool.
• Maintaining updated documentation of all the Servers, installed applications and updates.
• Providing 24/7 on call support for deployments as well as application support
• Installed and configured the ISA V4 Workbench, Agent Manager and agents to collect and diagnose problems in remote systems.
• Used ISA to troubleshoot, analyze and resolve issues, collect data automatically and create PMRs and send the required information to IBM.
• Used the tool available in ISA like Thread & Monitor Dump Analyzer, Thread Analyzer, Log Analyzer
• Involved in troubleshooting and performance tuning using Resource Analyzer and Log Analyzer.
• Security, users, groups administration and daily backup and restore operations.
• Involved in SSO portal implementation using Sun One Directory Server and CA SiteMinder.
• Active involvement in monitoring server performance, network traffic to reduce performance bottleneck.
• Ensure application dependencies are integrated on system level components such as database, Data Source Name, and Application Server connection pooling (DB2) including identification and documentation.
• Installed upgrades and fix packs to the runtime environment as required decreasing vulnerability to production environment.

Environment

IBM WebSphere Application Server 6.1/6.0/5.x, JBOSS 4.2, Linux (RedHat, SuSE), AIX, Windows 2000, HP-UNIX 11.0, EJB, JDK, J2EE, JNDI, DB2, IBM HTTP Server, Apache.

Confidential,
TX (Jan 2005 - Feb 2007)
WebSphere Administrator

Roles and Responsibilities:

• Installed and maintained IBM WebSphere Application Server 5.x/6.x and IBM HTTP Server 1.3.x/2.0.x.x/6.x and Apache on AIX 5.3/Linux/Windows/Sun Solaris 8.5 platform
• Responsible for installing and configuring third party software necessary to test the product such as IBM HTTP Server, IBM WebSphere Application Server
• Involved in migration of the applications from WebSphere 5.x to 6.0 and worked closely with development team. Applied Refresh packs, fix packs and cumulative fixes for Websphere and IHS
• Installed IBM HTTP Server and configured with WebSphere 6.x, to host the applications that are tested and deployed on application server
• Configured clustering environment in Network deployment configuration and responsible for maintaining, supporting the load balancing, high availability and failover
• Provided solutions for clustering in Websphere. Worked on Horizontal and Vertical clustering methods providing fail over, effective load balance scenarios and efficient utilization of system resources. Worked closely with other teams providing Web Server load balancing mechanisms
• Involved in creating and managing the cells using Network Deployment Manager.
• Good working experience in enabling WebSphere global security using Local OS and Sun One LDAP (LTPA mechanism), SSL configuration, Ordering digital certificates, creating key database using ikeyman and keytool tools, import/export certificates and create self signed certificates for development, UAT, pre-production and production environments.
• Good working experiences with Session Management, creating replication domains for session persistence (Memory to Memory replication) using client server methodology. Used Websphere backup and restore scripts for backing up WebSphere repository
• Configured virtual hosts, data sources, JDBC providers, JNDI, connection pool, JMS providers, resource adapters and connection factory settings for connecting to resources
• Involved in configuration of Websphere Application Server resources like JDBC Data Sources, JDBC Providers and Connection Pooling to connect to the DB2.
• Deploying the applications on clusters, updating the installed applications and updating Web Server plug-in configuration using administrative console as well as Jacl scripts
• Managing and Monitoring the JVM performance by WebSphere Heap Size, garbage collection, JDBC Pools Responsible for Architectural Design, Implementation and periodic testing and support of Web Environments with respect to High Availability and Disaster Recovery
• Analyzed log files to detect and troubleshoot server and application problems. Used the Trace feature to resolve issues
• Good understanding of the Sun One (iPlanet), IBM IHS, and Apache web servers
• Used Tivoli performance viewer to monitor Websphere applications and tuned JVM heap size, connection pools etc accordingly
• Understanding of applications integrated into a DMZ
• Worked with IBM Support and development teams in resolving issues related to application memory leaks, analyzing java cores and heap dumps using Thread and Heap analyzer tools
• Worked and solved variety of issues with WebSphere and J2EE applications. Provided 24/7 support for critical applications with on-call pager rotation , flexible to work during off hours

Environment

WebSphere Application Server 5.x/6.0, Apache Web Server V2.0.47/6.0, LDAP, Java, J2EE, JSP, Servlets, EJB, XML, JDBC, JavaScript, ORACLE 8i/9i/10g, DB2 V7.1/8.1, HTML, AIX 5.3/5.2, Solaris V8/9/10, BigIP, JACL Scripting.

Confidential,
GA (Mar 2004 - Jan 2005)
WebSphere Administrator

Roles and Responsibilities

• Installed, configured, administered and supported WebSphere Application Server 4.0/5.0 on Solaris and Windows
• Installed, configured, administered and supported JBOSS Application Server on Linux
• Implemented the Clusters / Server Groups and Cluster Members /clones (Vertical scaling & horizontal scaling) for fail over and distribute the workload on WAS
• Integrating enterprise-wide J2EE applications and deploying them on WebSphere Application Server and managing them through WebSphere administrative console.
• Created user roles and groups using Local OS registry and secured WebSphere resources.
• Developed Java applications using Servlets on WSAD
• Involved in configuring JDBC drivers, Data sources on WebSphere Application Server 4.0.
• Involved in creating UNIX shell scripts, JACL scripts which automates the WebSphere Administration (bouncing the application server, deploying enterprise applications, logs rotation, monitor applications state, etc,)
• Used Resource Analyzer and Log Analyzer for performance tuning and troubleshooting
• Installed fix packs and cumulative fixes to upgrade the version of WebSphere Application Server 4.0.
• Provided technical assistance for Web Hosting team on various Application servers and Web Servers including IBM HTTP Server, Apache Web Server, and iplanet Server.
• Monitoring all Servers, shutdown and startup, Network Support and Troubleshooting

Environment:
WebSphere 4.0.x/5.0.x, IBM HTTP Server 1.3.x, iplanet 4.x, Java, EJB, Java Servlets, JSP 1.0, Solaris 8, Windows NT/2000,Oracle 8i, Netegrity SiteMinder

Confidential,
CA (Jan 2003 - Feb 2004)
Java Developer

Roles and Responsibilities

• Involved in Application Analysis
• Involved in Design specifications
• Module level System development to meet requirements in specification
• Integration of Modules
• Preparing configurations plan and management
• Unit testing and resolution

Environment

Java, J2EE, UML and Oracle 8

Education Details

• B.S in Computer Science & Engineering