RaviKumar Buddha

Middleware Administrator / System Administrator/Build Engineer

5614253281

 

·               Seven plus years of progressively responsible experience in analysis, design, development, testing, documentation and production support applications using Internet, Web, Client Server Technologies in N-tier J2EE Architecture.

·               Extensive experience in troubleshooting issues concerned with Operating Systems (Solaris, Linux, AIX)

·               Installed and configured Operating System (Solaris) using Jumpstart.

·               Worked on virtualization of Solaris (configuring zones on Solaris 10)

·               Expertise in configuring/managing disk space using ZFS, Veritas Volume Manager.

·               Strong knowledge in porting native libraries for varies OS’s like Solaris, Linux and HP.

·               Developed UNIX Shell (Korn & Bourne) scripts for day-to-day Systems administration tasks.

·               Extensive experience with Administration of  SOA  OSB  and WebLogic and Application Server 7, 8.1, 9.2 and 10 Clustering (WLS), IBM WebSphere v7, 6.1, Tomcat 6.0, 5.5, 5.0, IPlanet Application Server, IPlanet Directory Server (LDAP), IPlanet Web Servers, Apache web Servers, Microsoft IIS Web Servers, and Site Minder Administration.

·               Extensively involved in developing and deploying enterprise applications against J2EE compliant application servers such as Bea Weblogic, Oracle Application Server.

·               Administration using the system administration tools like System Administration console, Node Manager, Command-Line interface.

·               Installation, configuration of hardware and software, migrating systems to current OS releases, upgrading software and tools.

·               Experience in Installation, Configuration, Management and Troubleshooting of Middleware Application Servers in a Clustered environment on UNIX and NT platforms.

·               Extensive experience in the administration of Portal and Liquid Data servers.

·               Deploying Enterprise Java Beans and J2EE Applications and Monitoring the Application servers and Web servers, configuration, troubleshooting performance issues using the Log messages and Log files.

·               Expertise in managing JNDI, Managing Security, Configuring and monitoring JMS.

·               Installation, configuration of hardware and software, migrating systems to current OS releases, upgrading software and tools.

·               Extensively worked on Server Configuration, Deployment of components and performance tuning including troubleshooting and maintenance.

·               Expertise in various Databases like ORACLE, SQL Server, MySQL, DB2, MS-Access.

·               Expertise in Service oriented Architectures (SOA) and Web Services.

·               Successfully implemented several Portal, SSO, Web Security, Identity Management and LDAP Architectures and Solutions.

·               Extensively involved in implementing enterprise applications using Java and J2EE technologies such as JSP, Servlets, Java Beans, Enterprise Java Beans, Entity Beans, Session Beans, Message Driven Beans, JNDI, JMS, Java Mail and RMI. Struts, EJB, JNDI, XML, Web Services (SOAP, WSDL) and AJAX

·               Highly conceptual innovative problem solver with excellent organizational and communication skills.

·               Participated in requirements gathering and technical contact in client meetings.

 

CERTIFICATION

 

Certified Weblogic System Administrator 2007  Weblogic Version 8

Certified Websphere  System Administrator 2013 Version 8

 

 

     Cognizant Technology Solutions                                                                                    Dec 2011 -  Till Date

Senior Middleware Admin /Build Engineer                                                                                

 

 

        TRACFONE WIRELESS

         SOA ADMIN/Team Lead                                                                                                     2014 May – Till Date

 

·               SOA Suite 10.1.2.x, 10.1.3.x, 11g and Weblogic Server 10.3.x Have knowledge of XML, WSDL, Web Knowledge in BPEL and SOA HA topologies as well.

·               Experience that includes Architecture, Analysis, Design and Development of Oracle SOA.

·               Expertise in SOA, Orchestration and Integration Technologies in the areas of Web Services, ESB,SOAP,WSDL, BPEL, XSD, XML and Web services Security and Virtualization of Services.

·               Experience in BPEL process Orchestration and Mediator for integrating between different applications.

·               Designed the SOA testing framework using SOAPUI for testing all the layers in the SOA services.

·               The configuration of the OSB Proxy services are done in Oracle Web Services Manager for monitoring and reporting purposes.

·               Expertise in Business Process Integration, Service Orchestration, and Routing using Oracle Fusion.

·               As a Infrastructure Support engineer was responsible to work  he architecture of the projects to plan, implement and support J2EE applications on WebLogic Platform 10.3.5/10.3 and    SOA suite 11g in Solaris and Linux Environment.

·               Setup and configured large Enterprise WebLogic Clusters utilizing WebLogic 10.3.5/9.2, wrote scripts and Java utilities that determine the performance of the Staging and Production sites.

·               Responsible for installation, configuration and support of WebLogic platform 10.3.3/10.3 and Tomcat 6.2/5.5 on Sun Solaris 10 and Linux Servers.

·               Provided complete migration support for Middleware layer while moving whole infrastructure from Solaris to Linux.

·               Assist developers, programmers, database administrators, and other users in resolving Middleware and application related issues

·               Configured Middleware/application with LDAP for authentication and authorization.

·               Developed UNIX tools using Perl, Bash, and C to simplify server management and to assist technical support personnel.

·               ESB  based application  with Webservice  calls

·               Achieved best performance by tuning WebLogic environment, application tuning and kernel level OS tuning by automating the tasks to obtain performance metrics. Tasks include, JAVA Heap, CPU performance, JDBC performance, detecting memory and connection leaks etc.

·               Optimized applications by providing the reports generated through Nagios and assisting developers to optimize the applications

·               Directory Server monitoring (process, response, access logs, errors logs).

·               Developed scripts (create, configure, start, stop, deploy and monitor health of server instance) using perl and middleware scripts.

·               Developed UNIX shell scripts to automate daily jobs (password expiry, healthcheck reports, etc)

·               Standardize installation, configuration management, maintenance and monitoring; automate processes; enhance system security; disaster recovery planning.

·               Configured JDBC resources, data sources and bounded to the J2EE applications, configured the connection pools for the various data sources.

·               Created the connection pools, various data sources, JMS connection Factories, Queues and topics.

·               Configuring Execute Threads, Connection Pools and JMS Bridges etc. for different components of the system.

·               Managing and Monitoring the JVM performance by Weblogic Heap Size, garbage collection, JDBC Pools. Developed scripts (start, stop, backup & recovery processes) for web application server administration.

·               Responsible for application changes across different platforms- development, testing and production environments

·               Deployment of all SOA Composites  through ANTHIL Pro build tool through GIT Repository

·               Involved in 24/7 support for production environments.

Environment: Solaris 10, RHEL, Weblogic 10.3/10.3.3,  SOA 11g suite and Apache Web Servers, Oracle 8i,10g shell/bash/python script, J2EE, GIT Code Repository, Anthill  Pro.

 

HMH Publishers

Build Engineer                                                                                                                    2013 -2014

 

·               Support LAMP based project.

·               Using version control system Svn and being single POC for 40 onsite and offshore developers.

·               Coordinating and  doing production Release.

·               Supporting ajile process Development and release.

·               Handling Code Repository  after release and syncing up with  rest of the branches and deploying on 10 Pre Prod environments as its code base deployments.

·               Working Experience in Resolving the code Merge Conflicts.

 

 

Environment: Solaris 10, RHEL, Weblogic 10.3/10.3.3,  SOA 11g suite and Apache Web Servers, Oracle 8i,10g   shell/bash/python script, J2EE,  GIT Code Repository, Anthill  Pro.

 

 

 

Arbitron

Sr JBOSS ADMIN

 

·               Was coordinating with on shore and offshore team while handling the project

·               Working Ticketing System and Change Request

·               Building up apache and JBOSS instances across

·               Give support multiple production application across the infrastructure

·               Supported application on multiple versions JBOSS and Weblogic

·               Automation of instance creation both Web and Middle ware

·               Dashboard monitoring of all JBOSS instances across the infrastructure( JBOSS access URL, Instance info, IP’s assigned to particular instances, which Host its running on , which environment, status of the instance.

 

 

Environment: Solaris 10, RHEL, Weblogic 10.3/10.3.3,  SOA 11g suite and Apache Web Servers, Oracle 8i,10g   shell/bash/python script, J2EE,  GIT Code Repository, Anthill  Pro.

 

 

 

SEAGATE TECHNOLOGY                       May 2011 – Oct 2011

System Administrator                                                                                                                Minneapolis, MN   

 

This project is for support multiple applications maintained across the globe by multiple research engineers working on research development team for keeping track of experiment tracking with zero down time and fail over cases.

·               Provided support to Development, Testing, Staging and Production, environments.

·               Installation, Configuring, troubleshooting and maintaining the Weblogic 8,9,10,11 versions and Apache

·               creating deployment scripts and server restarting script for application working on 3 tier and 2 tier architecture.

·               Created the JMS Server, JMS Connection Factories, Queues, Topics, FileStore, Database Store and Message

·               trouble shooting issues related to server manged server which have multiple applications running with zero down time

Environments:

Weblogic 8,9,10,11, StarTeam, Ant 1.8, Solaris 9/10, Shell Scripting, Bash, Oracle 10g, Linux 5.5.

 

 

 

ENTERPRISE RENT A CAR                                Aug 2010 – March 2011

Build Engineer / System Administrator                                                                                       St Louis, MO

 

This project is building entire weblogic environment  with own for monitoring tools as separate and deploying application based on release model , cruise control triggers the build in frequent interval of time if there is any code change is made and deploy the build to DEV lane

·               Application Support/Problem Management

·               Respond to tickets that come into our ticketing system

·               Troubleshoot hardware, software application and data center assets

·               Develop/maintain operational tools/scripts used to monitor application and system processing

·               Performance monitoring/reporting

·               Performance Tuning of hardware/software/apps

·               Implement Backup and Recovery process and technology

·               System Availability / System Capacity Planning

·               Installation and support of Software/Hardware

·               Vendor release upgrades and conversions (includes maintenance, patches, enhancements)

·               Perform security/disaster recovery planning, implementation, testing

·               Maintenance of UNIX Practices

·               Develop and enforce Information Security

·               Deploying application which were running on Websphere

Review and implement security alerts and Recommend and implement Security Requirements.

 

Environments: Weblogic10.3, Apache/ Covalent 2.0, ClearCase, CruiseControl, Maven, Log4j, Windows2003 Server, Tivoli Access Manager, Solaris 9/10, Shell Scripting, Bash, Oracle 10g, Visio, VMWARE, CruiseControl, ClearCase.

 

 

TOYOTA                     05/09 -  08/10

Weblogic / System Administrator                                                                                             Lose Angeles, CA

 

·               Migration Multiple Application from Weblogic 8 to Weblogic 10 on Solaris 10

·               WLST  Usage   for re- deployment,  Application status  and list of Apps, monitoring  Weblogic Servers health

·               Configuring the Vhosts for 400 to 500 redirects for every week in entire Toyota,Lexus,Scion Domains

·               Configured  multiples instances of Apache: ReversProxy, Apache, Apache-Siteminder

·               Systems administration, maintenance and monitoring various day-to-day operations.

·               Worked on SSO Enterprise level Applications

·               Handled Teamsite as Content Management tool  as aRepositry for deployment of application  into all environments DEV, QA and Prod

·               File System administration and management like monitoring various logs, file system sizes etc.

·               User administration and management like add/change/delete

·               User profiles, security authorizations etc.

·               Maintaining and changing file systems & disk assignments using meta disk

·               Installation/Upgrade, System Startup & System Shutdown as needed.

·               Administration and trouble shooting skills on Disks & File Systems, Users & Groups.

·               Documented various regular administrative tasks and backup procedures etc.

·               Working knowledge in services like Rlogin, Telnet, FTP, X-Window System etc.

·               Experience in networking and TCP/IP services.

·               Regular Trillium Postal code for  Support for all Webservices Application

·               Worked On Search engine for all Application Like Ultraseek, Autonomy

 

Environment: Weblogic 8.1Sp5 & Weblogic10.3,Apache 2.0 ,Teamsite ,Questfoglight ,keynote, F5, bigbrother,Solaris9/10, Shell Scripting, Oracle 10g, Trillium RMI process, Ultraseek, WLST, Autonomy Ideal Servers & UltraSeekSearch engine, Siteminder Policy., ESB based application.

 

 

 

 

 

 

 

 

SIMS (Toyota Incentives)                                                                                                                         6/08 - 5/09

Weblogic / System Administrator                                                                                                    Lose Angeles, CA

 

This was an application that was anticipated to support a very large number of users (43,600 total and 5,500 concurrent), as all dealership sales people will have access to the system.  This application was to be developed using J2EE framework and deployed using Weblogic Application Server. The application will use of Blaze rule engine for implementing the prescribed business rules

 

 

·               Building up the Environment  works on ESB  for multiple application hand shake.

·               Configuring application servers to covalent Apache.

·               Auto Deployment and Deployment of an Application with Large clustered based environment both test, QA and Production servers.

·               Working on both Snapshot view and Dynamic view Clear Case. 

·               Cruise Control Dashboard for  Triggering the build up application by getting latest source code version and auto deployment using  maven

·               Developed and configured Generic Startup scripts for Application servers

·               Working on Vmware  for  working on remote  build  servers and configuring CruiseControl

·               Worked on very large clustered based environment with multiple applications deployed

·               Visio Draft for multiple environments and documenting all Infrastructure, Development and troubleshooting documents

 

 

XM SATELLITE RADIO         1/08 - 4/08

WebLogic Administrator                                                                                                    Washington, DC

 

This was a DATA CENTER Migration Project, was working on very close with Application Architect while building up multiple Application  Across different Environment  from Dev to Production and preparing initial draft

 

·               Designing the architecture and building up Web Server and Application Server tier. Played a major role in suggesting/troubleshooting infrastructure associated with above tier and as well as incorporated high level application monitoring through Sitescope.

·               Creating detailed documentation about complete installing and configuring.

·               Configured JDBC resources, data sources and bounded to the J2EE applications, configured the connection pools for the data sources.

·               Developed WLST script  for restarting  the very large  clustered environment, monitoring and managing application deployments and  managed server  restart

·               Developed UNIX shell scripts to automate the deployment process.

·               Wrote Shell scripts on day-to-day Administration and prepared Technical documentation and transferred the technical know-how to the respective groups.

·               Configured Secure Sockets Layers SSL (PKI) for data encryption and client authentication and Two Way SSL for Weblogic 8.1/9.2 using Keytool.

·               Environment: Weblogic 8.1, Aqua logic ALSB 2.6, Weblogic Integration ,JBOSS 5, Apache, Sitescope, QuestFoglight, Windows (NT, 2000, XP), F5, Solaris 9/10, Shell, WLST Scripting, and Oracle 10g.

 

 

TIAA-CREF                  8/07 - 1/08

WebLogic Administrator                                                                                                  New York City, NY

 

Supported J2EE application deployment in Test and production environments and troubleshooting the application specific issues. Studied vendor products and made recommendations to the management based on the needs, providing Solaris support for UNIX hardware and software technologies, monitor daily operations of server environment, install, configure, and maintain servers, analyze and coordinate resolution of server-based problems.

 

·               Installation, Configuring, troubleshooting and maintaining the Weblogic 9.2 MP1/8.1

·               Managing and Monitoring the JVM performance by Weblogic Heap Size, garbage collection, JDBC Pools.

·               Designing architecture for initial implementation of Testing and Production environments

·               Involved in migration BEA weblogic 9.2 to 10.0.

·               JMS Server, JMS Connection Factories, Queues, Topics, FileStore, Database Store and Message Bridges

·               Developed scripts (start, stop, backup) for WebLogic application server administration.

·               Handling the overall administration and technical support of distributed server systems.

·               Monitored WebLogic server resources Foglight Monitoring,

·               Administered Software Packages, Patches, firmware upgrade, failed devices replacement and Device Management.

·               JBOSS Application support and  maintenance

·               Supporting application  which are using ESB level architecture and Integration

·               Documenting day to day problems (FAQs), major configuration changes and system architecture changes.

·               Responsible for application changes across different platforms- development, testing and production environments.

·               Involved in assisting QA team in Load and Integration testing of J2EE applications on WebLogic Application Server.

·               Involved in 24/7 support for production environments

Environment: Weblogic 10/9.2/8.1, Aqua logic ALSB 2.6, JBOSS 4 , F5, SUNOne, Apache, Windows (NT,

2000, XP), Solaris 9/10, Shell Scripting, WLST, Oracle 9i and Oracle 10g, Tivoli Access Manager.

 

 

 

 

TIME WARNER CABLE                                  04/07 - 7/07

WebLogic Administrator                                                                                                                 Charlotte, NC

 

 

This Project Included WebLogic Admin for Development, Staging, QA, PRE-PROD and Production environments to ensure successful delivery of all Java based applications by providing expertise around all Java and J2EE infrastructure and application needs.

 

·               Created WebLogic domains, managed servers, clusters, machines and start up scripts.

·               Managing and Monitoring the JVM performance

·               Developed scripts (start, stop)

·               Created Weblogic Portal domain and created projects, application and portal application in WebLogic workshop

·               Apache and Sun One Web Servers during the Data Center Server migration.

·               Involved in analysis, design and implementation of Web Gateway Security, Messaging Gateway Security, Network Gateway Security, Identity and Access Management using Web Security 1. 0and 1.1.

·               Configured and administered of realms, IPlanet Authenticator, JNDI, and SNMP in WebLogic Server 8.1/9.2.

·               Upgraded all Production and Non Production systems to Weblogic 8.1 SP5 from Weblogic 8.1 SP4 successfully and installed DST patches. Applied patches to the WebLogic servers

·               Configured Secure Sockets Layers SSL for data encryption and client authentication and Two Way SSL (PKI) for Weblogic 8.1/9.2 using Keytool.

Environment: SUN Solaris 9/10, WebLogic 9.2/ 8.1 Application Server, iPlanet 4.1, SunOne 6.1, Apache, Windows 2003, WILY Introscope, OpenSSL (PKI), Siteminder, Linux, Shell Scripting, WLST/ JYTHON, ANT/ AXIS/ Cruise Control and Oracle 9i.

 

EDUCATION

Bachelors in Engineering, Nagarjuna University, India

Masters in computer science   University of  Sprinfield at Illinois