-Utilized Agile Scrum Methodology and Test-Driven Development (TDD) throughout the SDLC.-Utilized Java 11 features, such as Lambda expressions and the Stream API, to enhance application performance.-Written Swagger contracts for designing RESTful APIs.-Developed Microservices using Spring Boot, and Spring Security and deployed to AWS cloud.-Utilized Spring RESTful API to design and develop robust RESTful Web Services, ensuring seamlesscommunication between the applications.-Employed Spring MVC architecture to create dynamic and efficient web applications, optimizing userexperiences.-Utilized Hibernate for robust Database Persistence, orchestrating seamless CRUD operations with maximum efficiency and ensuring data integrity.- Implemented user authentication and authorization using Spring Security, ensuring robust application security by using the JWT token mechanism.- Implemented, and maintained Kafka-based data streaming pipelines, facilitating real-time data ingestion.-Created user interface web pages by using React.js framework along with HTML5, CSS3, and Bootstrap.- Integrated React Hooks like useState, useEffect, and useContext to streamline complex state management and side effect handling.- Utilized AWS resources (EC2, S3, EBS, IAM, ELB) for the application deployment.- Worked on deploying Java code through Jenkins, used the AWS Code Deploy plugin to deploy to AWS, and worked on AWS Cloud management. Participated in requirements gathering, analysis, time estimates, design, development, and deployment of enhancements.

 Understanding the requirements by interacting with business users and mapping them into design andimplementation by following the AGILE Development methodology. Defined and constructed layers, server-side objects, and client-side interfaces based on J2EE design patterns.Worked on breaking up the large legacy monolithic applications into Microservices. Implemented Microservices architecture. Led development of business components and RESTful serviceendpoints using Spring Boot within the Microservices paradigm, ensuring efficient communication. Employed various Spring modules, including Spring IOC, Spring Web, and Spring Security. Utilized the Open API specification to document RESTful APIs, enabling clear communication and collaborationamong development teams, stakeholders, and consumers. Utilized Cassandra to implement highly scalable and optimized backend solutions. Developed Java-based data access layers using Spring Data Cassandra. Tested components using Junit and Mockito during development. Worked on advanced JavaScript concepts like ES5 and ES6. Implemented client-side routing using the React Router module. Utilized Babel as a transpiler and Webpack as the module bundler within the React and Redux environment. Developed interactive UI pages using React.js by integrating backend REST API calls to deliver seamless userexperience. Created Typescript reusable components and services to consume REST APIs Utilized Azure SDK for Java to interact with Azure messaging services.

 Implemented user interface guidelines and standards throughout the development and maintenance of the website. Performed the project in a successful Agile methodology. Used Microservices architecture, with Spring Boot Framework to enable RESTful interactions between services Configured and developed the J2EE application on WebLogic Application Server. Responsibilities include writing new APIs using Spring Boot, and Microservices. Designed and developed the REST-based Microservices using the Spring Boot. Performed annotations in Spring MVC to inject dependencies and handle URL mapping. Worked on Spring MVC form tags to automatically set and retrieve data from Beans. Implemented Spring transaction management. Used Postman client to test Rest services for testing. Worked on migrating data from the Oracle database to PostgreSQL. Developed the web application UI screens using JSF, HTML, JavaScript, and CSS. Developed AngularJS components such as controllers, services, filters, and models. Utilized Express JS app/router middleware functionality to streamline the request-response cycle of REST API calls. Built data-driven web applications using JSP by developing custom tags and JSTL. Designed and configured Azure virtual networks, subnets, Azure network settings, and routing. Integrated Azure services into the application architecture, effectively utilizing Azure Functions and Azure Storage. Worked with RabbitMQ Java APIs for Queues to integrate SOA services and build the application as a Service Oriented Architecture (SOA) platform. Used SVN as the version control system.

 Participated in the design, implementation, and test of software systems. Developed Web services using SOAP. Used Spring MVC Controllers to handle requests and send back the response, JSP to build the view layer. Developed the SQL queries and scripts to examine the data. Developed SQL, PL/SQL procedures on Oracle 11g. Involved in defining the Cassandra data modeling for efficient querying.  Design detailed Groovy script for every test scenario to validate the response JSON file. Involved in reviewing Test Cases and Test Strategies Worked on GitHub for version control and used Splunk for logging. Successfully performed unit testing and integration testing Developed the business logic and code Modules in HTML, CSS, and JavaScript. Used Node.JS tools like Gulp, Grunt, and Web pack and used Nest.js frameworks like Express and Typescript to mock a RESTful API. Created UI using jQuery, JavaScript, AngularJS & Bootstrap.

 Implemented J2EE Design Patterns such as singleton, service locator. Used jQuery selectors for accessing DOM and controlling access to different web pages of the application. Developed and implemented Spring MVC framework for the application. Developed presentation tier using HTML, and JSPs. Used Version Control Systems, Git. Developed session, entity beans, and message-driven beans. Implemented asynchronous communication using JMS. Followed the TDD approach and coded the unit and Integration test cases using JUnit and Mockito. Deployed the application on the WebSphere application server.