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 Created typescript reusable components and services to consume RESTAPIs using component-based architecture using angular 8.  Extensively involved in upgrading the existing system from Angular 7 to Angular 8. Built Angular 8 components, UI services to consume REST services using component-based architecture provided by Angular 8. Performed testing using Protractor, Jasmine, Karma, and involved in code reviews.  Implemented spring boot microservices to process the messages into the Kafka cluster setup. Had knowledge on Kibana and Elastic search to identify the Kafka message failure scenarios. Implemented to reprocess the failure messages in Kafka using offset id. Used Spring Kafka API calls to process the messages smoothly on Kafka Cluster setup. Developed application using concepts of Single page application using MEAN STACK (Angular 8), NodeJS, MongoDB, and Express).  Utilized Java 11 features like Lambda expressions for collection evaluation and comparing the data, Stream API for Bulk data operations on Collections which would increase the performance of the application.  Worked Extensively with Angular CLI for creating components, services, pipes, directives.  Used Parallel l operations on collections for effective sorting mechanisms and to change the sequential stream flow of threads while session establishment.  Expertise in developing Microservices with help of spring boot 2 manage by spring cloud technologies.  Experience on Migrating SQL database to Azure Data Lake, Azure data Lake Analytics, Azure SQL Database, Databricks and Azure SQL Data warehouse and controlling, granting database access, and migrating on premise databases to Azure Data Lake store using Azure Data factory. Secured REST API's by implementing OAuth2 token-based authorization scheme using spring security.  Used Node.js for server-side code and React.js as the framework. Written callback functions for the Restful API.

 Expertise in React JS components, Forms, Events, Keys, Router, Animations, Redux, and Flux.  Developed single page applications using React Redux architecture.  Developed user interface by using the React JS, Flux for SPA development.  Implemented client side Interface using React JS.  Worked in using React JS components, Forms, Events, Keys, Router, Animations and Flux concept.  Build React components and stand-alone functions to be added to any future pages.  Responsible for developing a front-end application using React JS and FLUX architecture for internal teams productivity use.  Experienced in React JS and working with React Flux architecture.  Expertise in Redux-Thunk and Redux-Saga for integrating the axios with Redux Store.  Involved in implementation of MVC pattern using JSP and Spring Controller and developed business objects using Spring IOC, Spring MVC and Spring AOP.  Worked on SOAP and RESTful Services using WEB API which return Json data.  Implemented SOA architecture with Web Services using SOAP, JAX-WS, WSDL, UDDI and XML.  Configured spring beans by Dependency Injection (DI) and Inversion of Control (IOC) principles.  Involved in implementation of MVC pattern using Spring Controller and developed business objects using Spring IOC, Spring boot, Spring Batch and Spring Cloud.  Working on different technologies like Java Multithreading, collections, Core Java, SQL, Stored Procedures, XML Parsing, Generating XML Requests.  Implemented Kafka producer and consumer applications on Kafka cluster setup wit help of Zookeeper. Used Spring Kafka API calls to process the messages smoothly on Kafka Cluster setup. Have knowledge on partition of Kafka messages and setting up the replication factors in Kafka Cluster. Implemented J2EE design patterns like DAO, Abstract, Session Facade, Factory Pattern and Singleton.  Used Rest Template, Feign, and Web Client for Synchronous and ActiveMQ for Asynchronous communication.

 Used Java/J2EE Design Patterns such as DAO pattern, MVC pattern, Session Facade, singleton in the project extensively, which facilitates clean distribution of roles and responsibilities across various layers of processing.  Designed Java classes using Spring Framework to implement the Model View Control (MVC) architecture.  Performed Module and Unit Level Testing with JUnit and Log4j.  Worked on solving production incidents and fixing bugs.  Used SVN Repository for Version Control and JBOSS 6.0 as the application server.  Designed and developed the responsive User Interface using HTML, CSS and Bootstrap.  Experience in creating new features and exposure to new Java Script updates in ES6.  Created cross-browser compatible and standards-compliant CSS based page layouts. Extensively used jQuery, JSON, AJAX and DOM scripting to create interactive web applications like message posting and autocomplete validation forms.  Worked with System Analyst and the project team to understand the requirements.  Prepared effective Test Scripts for each of the developed functionality.

 Developed web GUI involving HTML5, NodeJS, Javascript under MVC architecture.  Development of server side programming using Servlets, JSP, Struts.  Produced restful web services using Spring MVC that served JSON payloads to AngularJS based front end.  Developed TDD environment and followed continuous integration system with Hudson Server for Building/testing software projects continuously.  Used MyBatis for mapping POJO's to relational database tables using XML files.  Worked on Spring RESTful API to exchange XML and JSON data between enterprise applications.  Created Rest API's and Soap API's by using spring controllers and JAX-WS.  Developed Spring Beans and configured spring using application Context.xml.  Created forms to collect and validate data from the user in HTML and AngularJS.  Assisted Database Developers using PL/SQL for managing data associated with the tables.  Developed REST services using NodeJS to serve the web application with JSON data.  Used JDBC to connect to the Oracle database and JNDI to lookup administered objects.  Deployed and configured the data source for database in WebLogic application server.  Involved in deploying the application in test environment using Tomcat.