 Worked in an Agile environment with active scrum participation. Involved in various phases of Software Development Life Cycle (SDLC) as requirements gathering, modelling, analysis, design, development and testing. Integrated Struts and spring frameworks to develop robust and scalable web applications incorporate security features such as authentication, authorization, and CSRF protection, to implement best practices to enhance security. Implemented Object-relation mapping in the persistence layer using Hibernate (ORM) framework. Extensively used DAO patterns, including mapping DAO objects, configure file and classes to interact withdatabase. Collaborated with development teams to ensure that Swagger documentation accurately reflects theimplementation of API endpoints and meets business requirements. Implemented Spring Cloud (Eureka service discovery) and Spring Cloud Config on existing application, Swaggerfeature enabled for API documentation. Created client applications to consume web services and EJBs using Java API for XML-based Remote ProcedureCall (JAX-RPC) and Java API for RESTful Web Services (JAX-RS). Implementing secure Authentication & Authorization using OAUTH2(Spring Security). Built Web pages that are more user-interactive using Angular, HTML, CSS, RESTful API Services, JavaScript,Bootstrap, JSON. Developed Restful Web APIs using HTTP methods like GET, PUT, POST, and DELETE. Optimized HTTP/s protocols by applying caching, compression, and pipelining techniques to reduce latency andimprove performance. Integrated backend systems with databases, such as MySQL, PostgreSQL, or MongoDB, to store and retrievedata for mobile applications.

I worked with the phases of SDLC as a Scrum team member, following the Agile methodology and actively participated in sprint planning sessions.Extensively worked on Core Java, multi-threading, collections and exception handling.Used Java's concurrent collections such as Concurrent Hash Map and Blocking Queue to handle shared data structures across multiple threads, ensuring thread-safe access and efficient data manipulation.Implemented thread-safe data structures and algorithms, such as concurrent queues, concurrent hash maps, and concurrent linked lists, to handle shared data access and modifications.Worked on converting existing module to rest microservices and CRUD operations using Spring Boot. Experience in Writing Queries, Stored procedures, Functions and Tigger’s by using PL/SQL.Developed Microservices with spring and tested the application using SpringBoot.Implemented RESTful service to interact with Elastic Search and visualize the data using Kibana.Wrote SQL queries and Hibernate queries for interacting with database using Hibernate based POJO entities. Used Hibernate as the Object Relational Mapping tool to access data from SQL server.Developed UI interface using HTML, CSS, and React, JavaScript, and Tag libraries and Bootstrap.Designed and developed responsive user interfaces using react.Created various template and data-driven form components using React Forms and define module-levelrouting for various components in the application using React router.Involved in creating custom components and library components for displaying data using React wif Redux,ES6.Worked in using React JS components, Forms, Events, Keys, Router, Animations and Flux concept. Implemented client-side Interface using React JS and used various predefined components from PM (NodePackage Manager) and redux library.

Worked in an agile environment with active scrum participation. Involved in various phases of Software Development Life Cycle (SDLC) as requirements gathering, modelling, analysis, design, development and testing.Used Spring Core Annotations for Dependency Injection Spring DI and Spring MVC for REST API’s and Spring Boot for Microservices in the cloud ecosystem.created RESTful APIs using Node.js, implementing endpoints, handling requests, and managing database interactionsImplemented security protocols such as OAuth2, JWT, and SSL, and experience in implementing them in RESTful APIs to ensure data security and privacy.Experience in developing SOAP based web Services using APACHE CXF and JAX-WS.Developed RESTFUL Web Services using JAX-RS, Apache CXF and spring frameworks and persistence using Hibernate and JPA ORM frameworks.Used Micro service architecture with Spring Boot based services interacting through a combination of REST and Apache Kafka message brokers.Optimized HTTP/s protocols by applying caching, compression, and pipelining techniques to reduce latency and improve performance.Implemented API documentation using Swagger. Also, created and updated the swagger files to configure the definition of the objects or parameters of the service end points of the API.Worked with MongoDB to store non-relational data into collection. Extensively visualized the data using MongoDB Compass and performed complex operations based on the data retrievedImplemented Test Driven development (TTD) using frameworks like Junit, Mockito, and Wire Mock. Ensured a minimum code coverage of 80% and regular quality gate check with SonarQubeInvolved in Continuous Integration and Continuous Delivery (CI/CD) process using Git, Nexus, Jenkins job creation, Maven build, creating Docker image and its deployment in AWS environment

 Involved in the Software Development and Lifecycle for analysis, design, testing and implementation of the project. Good Experience in developing web/enterprise applications using SDLC methodologies like Agile. Prepared business and functional requirement specification and technical documentation. Experience on Collections, Exception Handling, Garbage Collection in Core Java. Designed use case diagrams, class and sequence diagrams in the design phase of the project and for workflowsettings. Developed code changes using core java, J2EE technologies and used Eclipse, JDBC and MySQL. Used Servlets for maintaining server-side business logic. Used various Design patterns like service locator, session facade, singleton and factory pattern. Used spring framework for implementing Spring IOC, JDBC, ORM. Involved in writing SQL Stored procedures and functions. Used HTML, CSS, JSP and JavaScript for building web applications. Implemented procedures, packages, triggers, and different joins to retrieve the database using SQL scripts.Created DDL, DML scripts to create tables, and privileges on respective tables in the database. Worked on deployment of virtual machines and troubleshooting on VM management. Worked on JSON, AJAX for request and response processing and used CVS for maintaining source code withother developers. Used Maven to build and deploy the application on web logic server. Used Git for version control across common source code used by developers.

 Worked with Waterfall Methodologies. Built the application based on Java enhancements of Exceptions and Collections at service layer. Designed and developed a web application using the Struts MVC framework for building the frontend, springframework for dependency injection, and Hibernate as the ORM tool for accessing the database. Developed web pages using HTML, CSS, and JavaScript. For logging and other functions used Spring AOP and Spring IOC Framework to implement them. SoapUI is used for web services testing. Developed Multi-Threaded/Concurrent applications. Implemented Collections for managing the dynamic data and other Core JavaAPIs. Developed lookup tables and Views to speedupqueries. Tested the functionalities of the business using JUnit at developing level before committing to QAteam. Developed and deployed the web application on to Apache Tomcat Server. Used Eclipse IDE to integrate the different frameworks to build the overall application.