• Developed a scalable microservices-based application using Java and Spring Boot, implementing RESTful. APIs and leveraging the Spring Cloud ecosystem for service discovery, configuration management, and load balancing.• Developed Spring REST controllers to serve data in XML and JSON format and configured application using Maven. • Used Apache Kafka for reliable and asynchronous exchange of important information between multiple business applications. • Utilized Spring Core to implement dependency injection and inversion of control, ensuring modular and maintainable code.• Used Microservices to ensure the scalability of application on cloud infrastructure. • Implemented SQL queries to interact with the database and implemented same in JPA Repository classes.• Implemented REST API end points to store/retrieve user data from the MY SQL for the application.• Used AWS cloud services such as EC2, auto-scaling and VPC to provision secure build, highly scalable and flexible systems. • Consumed REST based Microservices with Rest template based on RESTful APIs.• Used Eureka and Spring Cloud for service discovery and expertise in load balancing application services.• Designed and developed the application using Core Java, J2EE, Spring and Spring DATA JPA.• Used Eclipse IDE for implementing business tier with spring boot, Spring IOC, AOP and MVC.• Used Java 8 features like Lambda expression, stream APIs and Functional Interfaces.• Used java concepts like Collections, Generics, Exception handling, IO, Concurrency to develop business logic.

• Extensively worked with consuming the REST services from the front-end using React JS.• Developing the Microservices using Spring Boot that create, update, delete and get the requested data from backend.• Implemented MVC architectural design pattern using Spring MVC module.• Implemented the application using Java/JEE Design patterns like MVC, Singleton, and Data Transfer Object (DTO), DAO.• Worked on React JS virtual Dom and React Views, rendering using components which contains additional components called custom HTML tags.• Responsible for React UI and architecture. Building components library, including Tree, Slide-View, and Table Grid.• Implemented event-driven architecture using Apache Kafka, enabling real-time data streaming and seamless communication between microservices.• Implemented Security with JWT and Spring Security.• Containerized Spring Boot applications with Docker and deployed to Amazon EC2 container using AWS admin console.• Extensively worked on form validations using the Spring based annotations. • Involved in working with SQL queries, function, and procedures for performing CRUD operations on database using JDBC/JPA concepts on Oracle11g database.• Implemented JWT (JSON Web Token) with Bearer authentication tokens, Spring Security and OAuth2.0 for securing Microservices.• Implemented Agile, Scrum methodologies actively involved in technical meetings, requirements gathering, analysis, planning, effort estimations, development, and testing.• Implemented API Gateway for routing all services configured and implemented Load balancing of the services.• Implemented Resilience4J Circuit Breaker Pattern for handling services failure.• Configured Transaction management and followed best practices to implement transaction support for consistent database updates using spring transactions.• Built Maven scripts for automated deployment and for the build operation of the entire application.

• Involved in the complete SDLC including design of System Architecture, development of System Use Cases based on the functional requirements. Designed the algorithm and codes and have used design patterns and Object-Oriented Design methodology.• Participated in Server upgrades, code migrations, and worked on important enhancements in the business requirements. Involved in implementation of MVC pattern using Angular JS, Node JS, JSP and Spring Controller.• Used JAX-RPC Web Services using SOAP to process the application for the customer. Implementing the nightly batch jobs to process the data.• Used Spring Batch to build the POJO-based development approach of the Spring Framework. Design and developed configuration output in XML and PDF format. Designed and developed configuration wizard using Spring MVC, used Spring Web Flow to create business rule-based flow mechanism, and configuration entity model in JPA.• Implemented Restful Web Services using Spring Boot. Created detail design documents for use cases of the system that are signed off by business users. Implemented MVC architecture using JSP, Spring, Hibernate and used Spring Framework to initialize managed beans and services.• Used spring boot Actuator to externalize application's configuration properties for different environments. Worked on the development of the Language Manager application using Portlets, Struts, SQL Server, Hibernate, etc. Used Spring Batch with Spring Boot framework for developing a batch application for Loyalty Rewards.• Integrated Spring MVC model for front-end request action controller and Spring JPA for fetching data from Database. • Developed the REST based Microservices using the Spring Data with JPA and used swagger to interact with API end points of the Microservices.• Implemented event-driven architecture using Apache Kafka, enabling real-time data streaming and seamless communication between microservices.

• Involved in various phases of Software Development Life Cycle (SDLC) of the application like Requirement gathering, Design, Analysis and Code development. Developed a prototype of the application and demonstrated to business users to verify the application functionality.• Worked with Spring Framework using components like MVC and JDBC. Also used Hibernate ORM, JSF and StrutsMVC frameworks. Developing front end of application using HTML, CSS, backbone.js, JavaScript, jQuery.• Used Hibernate as an ORM framework with JPA specifications to map Java classes to Database tables. • Involved in setting up configuration properties, ORM mappings and CRUD operations with database. Used sessions, transactions, Criteria’s, and queries to develop business requirements. • Involved in providing security with Authentication and Authorization using JWT & Spring Security.• Worked with Spring MVC and Dependency Injection for handling presentation and business logic.• Implemented RESTful web services to retrieve data from the client-side and made REST API calls from React and parsed the data to request endpoints.• Worked on handling the security and Authorization using Spring Security.• Implemented Transaction Management using @Transactional annotation. • Implemented application using design patterns like MVC, DAO, and front controller.• Involved in creating complex SQL data base queries and calling Stored Procedures.• Worked on optimizing database queries to improve the loading times of the web pages.• Implemented DAO layer using different Hibernate techniques like criteria API.