SUMMARY:

• Close of 7+ years of focused IT experience with a proven track record of System Administration, Production Support and Configuration of distributed environments Oracle Coherence, IBM WebSphere, Oracle GoldenGate, Apache Cassandra, Solace Routers & Application Administration being the key strength..
• Extensive experience in Golden Gate / Cassandra Administration, Monitoring, Troubleshooting and Maintenance on UNIX Servers.
• Strong experience in Installation, Configuration and maintenance of Multiple Domains, Clusters, on different environments like Unix, Linux.
• Strong debugging skills with experience in analyzing the various server logs to perform Root Cause Analysis.
• Experience in installing Oracle Golden Gate and configuration of various Golden Gate extracts to replicate data from back - end databases onto L2/L3 systems using Solace VPN backbone.
• Experience in configuring/integrating/troubleshooting loaders, listeners to push data from databases to GRID(cache) servers.
• Experience with Zookeeper tool, to move configuration files from centralized system to various servers to which it is integrated.
• Experience with SVN tool kits for deploying J2EE applications onto GRID systems.
• Expertise in Handling Code Releases and Deploying applications in Production.
• Provided support in major Production outages.
• Worked closely with development and testing teams to implement fixes in Testing and Production environments.
• Worked on Change Management to complete changes in production environments.
• Performing troubleshooting production issues, root cause analysis and preventive actions. Excellent problem resolution and communication skills with ability to work under pressure in a highly visible role.
• Effective leader, motivator and team player with excellent planning, coordination, time management, supervision and organizational skills.

TECHNICAL SKILLS:

Operating Systems: UNIX, Linux 6.2/7.2/7.2/8, HP-UX 10.20, IBM AIX5.1/5.2/5.3, Solaris7/8/9/10 and Windows NT/2000/2003/XP/Vista.

Web/Application Servers: IBM WebSphere Application Server 6.1/6.0 Oracle Coherence 3.6/3.7/12c, Oracle Golden Gate v11.1, Apache Cassandra 1.0.7/1.2.5

Applications: IBM WSAD 4.5/5.x, Web Sphere studio 5.0, MS Office and FrontPage

Tools: Wily Introscope, HP Openview, Samurai, JRockit, JProbe and LoadRunner, Cruise control, Cygwin, Zookeeper, SCMPro, Serenea, Nolio, Starteam

Scripting Languages: WLST, JavaScript, Korn Shell Script, Python and Perl.

Databases: Oracle 8i/9i/10g/11g, DB2, Sybase, Point Base, MySQL, SQL server and MS ORACLE 10g/9i/8i, DB2/UDB 7.2/8.0, SQL Server, MS-Access

Version Control: CVS, SVN and Rational Clear case.

Protocols: TCP/IP, FTP, SSH, SMTP, SOAP, HTTP, HTTPS, UDP, IMAP, POP3, NIS, NIS+, NFS, DNS and DHCP

Hardware: System Installation, Network, PC and Operating system Troubleshooting, Solace

PROFESSIONAL EXPERIENCE:

Confidential, Atlanta, Georgia

Sr. Cassandra Administrator

• Administrated and maintained online applications with 99.999% availability.
• Provided 24/7 on-call support for production infrastructure components.
• Provided technical direction by creating a set of Technical Architecture Standards and a Technology Roadmap for implementing upgraded technologies, Infrastructure Solutions and decommissioning outdated ones.
• Installed, Configured, Administered Apache Cassandra 1.0.7/1.2.5 /2.0.9 for providing GRID solutions in terms of data-cache management at cache level, to improve overall experience of end-clients by cutting down end-to-end transaction times.
• Installed, Configured, Administered Oracle Golden Gate at GDDN layer with major components being Golden Gate and Change Processors.
• Configured Extracts for Golden Gate to replicate data from back-end Billing Databases through remote-pumps. Configured Change processors to sort the data categorized using mappers.
• Worked extensively on Solace routers, to transmit data in terms of messages to multiple datacenters simultaneously.
• Configured Loaders/Listeners to move data eventually to L2 (Coherence) / L3 (Cassandra) systems where data would be stored as per there cache-names.
• Responsible in Maintaining Remedy system for ticket management.
• Participate in preparation of Support documents Performed backup and recovery operations
• Used DataStaxOpsCenter and node tool utility to monitor the cluster.

Environment: Web Logic Server 8.1/9.2,10.3, Cassandra, Jboss, Linux 3/4/5, Load Runner, Oracle9i/10g, HP Service Desk, Windows 2003/2008, Oracle Identity Management, Netscape Directory Server 4.0, Apache 2.0, Sun One Webserver 6.x/7.0, EAccess Manager, IBM MQseries, CVS, Tomcat Application Server, F5.

Sr. Cassandra Administrator

Responsibilities:

• Administered Cassandra cluster using DatastaxOpsCenter and monitored CPU usage, memory usage and health of nodes in the cluster
• Deployed and maintained PROD, TEST and DEV clusters
• Involved in requirements gathering and Capacity planning for multi datacenter(four) Cassandra cluster
• Migrated around 500 GB of data from one datacenter to another datacenter
• Created and managed the VM’s in OpenStack environment for testing purpose
• Configured internode communication between Cassandra nodes and client using SSL encryption
• Evaluated Data model by running endurance tests using JMeter and OpsCenter.
• Designed and configured gateway node to the cluster
• Documented and demonstrated on various ways to securely connect to the cluster
• Designed and implemented a strategy to securely move production data to Development for testing purposes using sstable loader
• Designed and implemented a strategy to upgrade the DataStax enterprise cluster
• Worked on major and minor upgrades of cluster
• Used DataStaxOpsCenter and nodetool utility to monitor the cluster
• Involved in Data modelling design for various use cases
• Played responsible role for deciding the hardware configurations for the cluster along with other teams in the project
• Knowledge on applying updates and maintenance patches for the existing clusters
• Administration of active applications, application performance monitoring recycling the application server, installation of plug-ins for iPlanet SunOne 6.1 Web Server.
• Configured Microsoft IIS to act as a front end web server for backend WebLogic application servers.
• Enabling Global Security using the Domino LDAP User Registry and assigning the user rights according to their privileges.
• Installed IBM HTTP server 1.3.26 and generated plug-in files.
• Increasing Web Server thread-count from 15 to 80
• Configured the extranet Web Servers and intranet application servers using the firewalls between the Web Servers and application servers like DMZ model.
• Used IBM Edge Server and Network Dispatchers for load balancing.
• Configured the Web Server interfaces, session management, virtual hosts and transports for WebSphere.
• Experience in installing, configuring and administration of Apache HTTP 2.0 Web Server and Sun Web Server iPlanet 6.1.
• Troubleshoot environment and application issues using ORACLE WLS support patterns as the standard methodology and provide root cause summary to application stakeholders.
• Configured clustering, Data sources and connection pools for various applications on WebLogic application server.
• Extensive experience of setting up multiple cluster environment and deploying applications on the same.
• Worked on Web Security tools- LDAP Server, SSL s.
• Node Manager Configuration remote managed server start and stop. SSL communication between Administrator server and node manager.
• Knowledge on distributed systems and the support of highly distributed deployment.
• Good knowledge of other web and applications servers like Sun java systems application server, Sun 1 application server JBOSS, Apache

Environment: Cassandra,WebLogic 11g/ 10.3/9.2/8.16/, MQSeries6.1/7.0, ITCAM6.1, Tivoli, JDK1.4/1.5, LDAP, Oracle9i.

Sr. Production Support Engineer

Responsibilities:

• Troubleshooting through usage of monitoring tools, querying the database and checking from backend (Unix).
• Participate in preparation of Support documents
• Create Change Requests for application, implementing them and following it to closure.
• Providing within the team on issue resolving.
• Involved in providing solution to the trouble tickets, sent by the business team within the SLA .
• Setting up of connections with the OCAs ( vendors ) connecting through Confidential firewall, communicating with the vendors for issues they are facing in receiving the data ( account details ) from Confidential .
• Working closely with the development team and also with the business teams to resolve critical issues.

Environment: SQL Server 2005/2008 R2 /2012, Windows Enterprise Server 2003, ORACLE 10g, IIS 6.0, .NET,UNIX, Erwin, Microsoft Visio 2003,SSRS, SFTP, Oracle RAC,DB2,Microsoft Silver light, Microsoft Reporting Services(SSRS)

Confidential

Production Support Engineer/ WebSphere Administrator

Responsibilities:

• Installing and configuring IBM WebSphere and deploying the code in a Clustered environment to create Production, Test and Development environments from scratch for Enterprise e-business applications to run.
• Tasks like Application deployment, configuration, maintenance, Network Deployment, Refresh and Upgradation of Environment with new versions of the code .
• Maintenance of various production, development, testing environments and daily maintenance tasks like Bouncing, Hotfixes, Emergency Fixes(Patch Installation for Defect removal).
• Troubleshooting the Environment for the configuration and connectivity issues against the issues logged by Testing Team and thus ensuring that the environment is available for the testing and development teams for their work.
• Providing second line support, including faults raised by the testers and working with developers for the resolution of the defects and carrying out various pro-active maintenance activities to minimize defect levels.
• Trouble shooting with related issues of all the application
• Troubleshooting and resolving the problems faced in the testing phase in conjunction with the development team, testing team, networking team and vendors.
• Planning and implementing the installation of Hot Fixes or Upgrade on the environment .
• Backup and restore of all Application environments through tools.
• L2 Production Support .

Environment: IBM WebSphere Application Server 6.0/6.1/7/8/8.5, IIS webserver, Oracle11g, RHEL, Windows 2003, Shell Scripting