• Designed and Developed a Web Application based on Multi-Tier Architecture using the current most popular web technologies like HTML5, CSS3, JavaScript and RESTful Web Services. • Utilized React for its efficient data flow architecture to create a lightweight and render efficient web app that searched projects via the GitHub API through keywords.• Develop Responsive Html web pages using HTML5, CSS3, jQuery, JavaScript, Bootstrap, webpack and extensively used ES6 to create components in REACT.• Used features of Java 8, like Lambda to facilitate functional programming and simplify the problem as well as stream feature of Java 8 for aggregate operation and pipelining and defined resource URI structure and a message format to interact Ext.js client application with Play Framework server application using REST and JSON. • Extracted and updated the data into MONGO DB using MONGO import and export command line utility interface as well as developed Collections in Mongo DB and performed aggregations on the collections.• Worked in continuous integration using Jenkins for timely builds, code coverage, running test as well as developed a batch processing system with REST based APIs, using Spring Batch 3.0, integrated with Quartz scheduling and responsible for React UI and architecture. Building components library, including Tree, Slide-View, and Table Grid.• Implemented a caching mechanism using Redis as the data end technology leveraging the AWS platform. Work on setting up builds and configuration management. Managed expectation by providing status reports, metrics, test plans and delivery plans to the management on a constant basis.• Tested the cluster Performance using Cassandra-stress tool to measure and improve the Read/Writes as well as installed, configured and managed Cassandra database and performed read / writes using Java JDBC connectivity.

• Designed and developed customer registration and login screens using HTML, Bootstrap, Servlets and JavaScript as well as simplified client-side scripting of HTML 5 using jQuery, a cross-browser JavaScript library.• Developed various APIs to be consumed by other modules of the application using RESTful web services and Used Junit framework for unit testing of application and Log4j to capture the logs. • Developed Spark programs using Scala to convert the complex hive queries and created Spring Batches for running batch jobs and documented the use of Spring Batch and responsible in testing the classes and methods using JUnit test case as well as designed and developed the REST based Microservices using the Spring Boot with JPA. • Wrote processes to synchronize data between core databases and Redis cache-based update events sent through AWS SNS messaging and worked in creating new JSON RESTful end point development, with implementation AWS Redis Cache for superfast responsiveness.• Created and managed microservices which were being used as a strategy to gradually replace a core monolithic application while still adding business features and spring Data MongoDB was used to integrate MongoDB document database with application.• Implemented PostgreSQL system backup procedures and updated site resources as well as suggested latest PostgreSQL updates and evaluated database issues.• Implemented RESTFUL web services for real-time transactions using Struts Validation framework and JavaScript for server-side and front-end validation and familiar with creating Custom Reusable React JS Components Library.• Develop dashboard for client health and performance (Node.js/Express backend / D3 frontend) as well as involved in setting up Grails project and its configuration and Implemented Grails Services and controllers to perform actions.• Made accumulations and performed CRUD operations on MongoDB utilizing Mongo Driver, Mongo BSON and mongo Repository.

• Developed a JavaScript UI for a credit-reporting application using Angular.js, Marionette.js, Backbone.js, Node.js and CSS and designed and Implemented MVC architecture using Struts Framework which involved writing Action Classes/Forms/Custom Tag Libraries JSP pages.• Implemented Design Patterns, such as Singleton Factory, to add definition. Developed action forms and controllers in Struts 2 framework.• Involved in troubleshooting of Front Endissues with the div base layout and Involved to implement various screens for the front end using REACTJS and used various predefined components from NPM (Node Package Manager) and REDUX library.• Used MongoDB as a persistent store and Apache Kafka as a messaging layer for custom as well as coded controller classes to expose spring RESTful web services and service Implementation classes as well as responsible for Coding using JSP, Java Servlets, Struts and XML.• Used core Java/J2EE components for tuning the application compatible with the new application server configuration and used Maven tool to build project and JUnit to develop unit test cases and wrote SQL and implemented ORM using JPA and developed front end features using React/ Redux/ES6 with Web pack.• Enhanced and supported existing MEAN (MongoDB, Express, Angular and Node) stack applications and implemented RESTFUL web services for real-time transactions using Struts Validation framework and JavaScript for server-side and front-end validation.• Used the Spark - Cassandra Connector to load data to and from Cassandra as well as written Storm topology to emit data into Cassandra DB.• Involved in the coding of Distributed Multi-threaded Enterprise applications using J2EE technologies Servlets, EJB, RMI, JDBC and JMS.• Involved in Requirements gathering, analysis, design, development, testing and Maintenance phases of Application and involved in configuration of WebLogic server domains, clustering, load balancer and JMS queues.