-  Implemented DAOs, entities using Hibernate API and Hibernate QL. All the functionality is implemented using Spring IO / Spring Boot and Hibernate ORM. Implemented Java EE components using Spring MVC, Spring IOC, spring transactions and spring security modules. Implemented all the components following test-driven development methodology using JUnit. Used GitHub, bitbucket as version control system. Created build and deployment scripts using Maven. Involved in build and deployment on Tomcat servers with Jenkins and docker. Created CI/CD pipeline Worked on front-end validation through JavaScript and back-end validation using Spring Validation Classes. Developed JSP pages using HTML, JSTL Tag Library, Struts Tab Library, and JSP Custom Tags. Writing JSP form bean validations by using Struts Validation framework validation.xml, validator-rules.xml and message Resources.  Designed and developed REST web service for validating address.  Developed the application using JSF for front end, Spring to manage business layer components.  Used Hibernate for object Relational Mapping and used JPA for annotations.  Used Criteria API and HQL for data extraction.

-  Involved in implementation of the presentation layer GUI for the application using JSF, HTML, XHTML, CSS and JavaScript. Developing Online panels and application using EJB, Java Servlets, Session Entity8eans  Handled the database persistence using JDBC.  Implemented the project using the Spring Framework used Spring IOC and Dependency Injection, Spring MVC.  Used Spring Framework and created the Dependency injection for the Action classes using Applicationcontext.xml.  Using Java Script functions for the custom validations.  Expertise in Red hat Linux Capacity and Performance Planning.  Developed using Struts, JSPs and Tiles definitions. Performed Validations on I-Il data using JSF validations and JavaScript. Involved in implementing the rich user interface using JSP Standard Tag Libraries and worked with custom tags.  Performed client-side validations using java script functions to implement various functionality. Worked on ancillary technologies/tools portal/portlet development, BPM, rules engines, security/SSO. Worked on designing/developing of large, transactional, enterprise class systems. Worked on externally facing web-based applications.

-  Worked with Map/Reduce and stream processing e.g. Storm  Worked with NOSQL databases such as Cassandra, MongoDB, and Risk  Supported and provided important feedback to various development teams with regards to the grid computing and caching technology.  Developed user Interface in JSP, JavaScript and HTML with Backbone JS Framework  Designed and developed REST-full style Web Service layer and WSLD.  Developed SQL, PL/SQL, stored procedures along with Shell Scripting- database application scripts.  Deployment of web, enterprise java components, messaging components and multi-threading. Extensively used Hibernate in data access layer to access and update information in the database.  Design of GUI using Model View Architecture STRUTS Framework.  Integrated Spring DAO for data access using Hibernate  Created hibernate mapping files to map POJO to DB tables  Involved in the Development of Spring Framework Controllers  Developing application using Spring core module and POJO's using Eclipse and worked on Messaging service.  Designed and developed the XSD for WSDL.  Developed user interface using JSP, JSP Tag libraries JSTL, HTML, CSS, JavaScript to simplify the complexities of the application Involved in developing the Pig scripts.  Used JMS for the asynchronous exchange of critical business data and events amongJ2EE components and legacy system.