SUMMARY

• Over 12 years of IT experience with Application Server (WebSphere, WebLogic, Tomcat, JBoss) System Installation, Configuration, Deployment, Administration and Production Support on heterogeneous systems AIX, Linux environment with different versions of WebSphere Application Server.
• Involved in creating and configuring WAS Liberty profiles, clusters, nodes, node agents for WebSphere Application Server. Implemented the Workload Management using clustering.
• Involved in tuning, security, backup, recovery, and upgrades of WAS, Tomcat, Apache http server on RHE Linux, IBM AIX.
• Created Clusters and instances in WebSphere Network Deployment to support high availability, fail over and implemented horizontal/Dynamic clustering. Configured WebSphere Recourses JDBC Providers, JMS providers and SSL Certificate management.
• Experience in troubleshooting, applying patches and plug - in for WAS 9.0.5/8.5.5. Setting up Virtual Hosts on the Web server, configuring aliases and rewrite rules. Performance monitoring using tools AppDynamics.
• Experience in integrating WebSphere Application Server and Deployment manager with IBM Http server.
• Involved in Installing Upgrade Fix Packs and Migrating to latest versions.
• Excellent verbal and written communication skill
• Proficient in AWS EC2, S3, ELB, route53, Jenkins CI/CD, Docker

PROFESSIONAL EXPERIENCE

System Engineer/Middleware Admin

Confidential, NC

Responsibilities:

• Participated in middleware administration role for multiple systems and platforms, end-to-end, including WebSphere, JBoss, Apache, and IBM HTTP Server, WebSphere Application Server administration that includes server product installation, configuration, performance tuning, and production support.
• Installed and configured IBM Http Server, WebSphere Application Server Network Deployment (ND), 9.x/8.5, and the Refresh Packs and cumulative fixes to WebSphere ND V9.x environment, for WebSphere, plugins and IHS.
• Created the Clustering Topology in WebSphere Application Server ND V9.x to achieve Workload Management (WLM), High availability, Load Balancing and Hardware failover.
• Configured Web server plug-in to direct dynamic requests to application servers for load balance in clustered environment.
• Involved in Web Servers performance tuning such as tuning the web server by specifying the parameters for the maxclient, start servers and maxspareservers. Tuning the Servlet engine and database connection pools. Tuning the Java Virtual Machine (JVM) by specifying the minimum and maximum heap size.
• Application monitoring with APM tools to monitor WebSphere Applications and tuned the environment accordingly changing the JVM Heap, and Connection Pool sizes.
• Configured WebSphere resources JVM heap settings, JDBC providers, JDBC data sources, connection pooling, Virtual Hosts, Global Security and SSL.
• Involved with the SSL Certificates missing issues and installed certificates from the backup.
• Involved in DMZ Web server upgrade and maintenance. Participated in production support log analyze, ripple start/roll out update/node synchronize.
• Implemented Horizontal and Vertical Clustering, Performance tuning and troubleshooting of IBM WebSphere Application Server 9.x.
• Installed EAR, WAR, and configured application specific JVM settings, Web container parameters using the Admin Console and WSCP/WSadmin scripts. Migrated existing applications from WebSphere V8.5 to V9.x.
• Involved in issues Application not responding. Application Deployment Errors, Wrong Database host name, Server hung due to out of memory or thread hanging, Owner ship issue.
• Implemented shared, multi-tenant Tomcat application environment. Configured and maintained mod jk, Virtual hosts, SSL/TLS enablement, manager/host manager applications deployment.
• Participated On call support for any issues or impact caused by the new changes. Solving L3/L2/L1 work requests.

Environment: IBM WebSphere Application Server ND 9.0.5/9.0.4/8.5.5 , IBM HTTP Server 8.5/7.0, Apache http 2.4.46, Apache tomcat 9/8, Jboss EAP7, RHEL 7, IBM AIX 5.3, Dynatrace, BladeLogic, Venafi, Ansible, Shell scripting, bash, python

Application Server Administrator - Middleware

Confidential, NY

Responsibilities:

• Served as a J2EE architect and making recommendations on J2EE best practices in application development, Designing WebSphere infrastructure and WebSphere topology design for high availability and failover capability. Configuration and management of WAS8.5.5 liberty profile
• Installed and configured fix packs and applied the latest refresh packs and fix packs on Plugin. Involved in troubleshooting, tuning IBM WAS ND and IBM http Server,
• Created users and groups in LDAP Servers and mapping them to the enterprise applications running on WebSphere Application Server. Configuring and maintaining horizontal and vertical clusters. Managed portal applications in portal server.
• Troubleshoot Admin Server start-up issues, Java code defects after deploy support eclipse, and class path issues by checking the JVM logs, plug-in, and the Web Server logs.
• Supported applications 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.
• Maintained security, tuning and clustering on Web Sphere Application Server using IBM Webseal Tivoli Access Manager. Monitored the logs for Application Server Instances.
• Implemented Horizontal and Vertical Clustering, Performance tuning and troubleshooting of IBM WebSphere Application Server and WebLogic Server.
• Involved in number of upgrades (Applying Fix Packs) of Web Server instances from development, testing and production. Application deployment in a clustered environment.
• Jdk upgrade, Apache HTTP, IBM HTTP server and application deployment.

Environment: IBM WebSphere Application Server ND 9.0/8.5.5, WebLogic Server12c, IBM HTTP Server 6.1, Jboss, Apache http 2.4.x, UNIX (AIX 5.3, Linux), Windows, Dynatrace, WLST, Python, Shell scripts.

Software Engineer/Middleware

Confidential, GA

Responsibilities:

• Participated in Application Server product (WebSphere, WebLogic, Tomcat, JBoss) System Installation, Configuration, Deployment, Administration and Production Support on heterogeneous systems AIX, Linux, Windows environment with different versions of Application and Web Server.
• Took part in practical/architectural guidance to software development team to improve resiliency, efficiency, performance and capacity planning and management. Coordinated with product operations team to resolve trouble tickets, developing, and running scripts, and troubleshooting services in a hosted environment.
• Experienced in Middleware server technologies and topology in architectural design and successful implementation of multi-tier architecture. Expertise knowledge in finding the Memory Leaks and tweaking the heap Sizes and Garbage Collector Parameters during performance monitoring/tuning.
• Install, Configure Oracle WLS 12c and Fusion Middleware Administration12c, 11g, 10g, as an administrator in installing configuring and administering Server Configuration, Deployment in managed server and cluster environment.
• Performance tuning troubleshooting and maintenance. Configured and administered JDBC, JMS and Node Manager to administer the Managed Servers. Quarterly patch management 24x7 on call production support. Configuration. performance tuning, troubleshooting. Performed Load test with JMeter, Mercury Load runner, coordinating with the test team members.
• Investigation and analysis and resolve L3/L2 problem on infrastructure’s/TLS configuration, troubleshooting, enabling HTTPS.

Environment: RH Linux, Solaris 10, CentOS, WindowsOS, Oracle WLS12c, IBM WebSphere8.5., Jboss, Apache HTTP, IIS, Tomcat, Oracle RDBMS, MSSQL, MySQL, Dynatrace, OWASP, Shell/WLST, JIRA