Worked with Core Java and Advance Java which implemented the login and register page using JSP and Servlet with MySQL databaseDeveloped applications using Java, J2EE Standards, Java Server Faces, Hibernate.Involved in implementing the Micro Services based on RESTful API utilizing Spring Boot with Spring MVC.Implemented core backend functionality, including user management, package tracking, and order processing, and utilized Spring Boot to create RESTful APIs for communication.Created and maintained reusable front-end components using React, TypeScript and Material UI Utilized High-Order Components (HOCs) to reduce redundant code and enhanced code reusability and efficiency. Developed actions and reducers to manage and manipulate data within the Redux store, resulting in a reduction in state-related bugs and an improvement in data retrieval times.Designed and implemented robust REST APIs in Java following Object-Oriented Principles, ensured consistent and reliable data transfer. Utilized Spring Boot, and Spring Data JPA to handle requests Wrote unit Test cases to ensure code quality and system integrity Participated in the implementation of client side and server side programming using HTML, XML, Servlets, JSP, JavaScript and CSS.  Converted existing APIs and implemented new Node.js-based APIs, ensuring a smooth transition and improving the scalability and efficiency of the application.Designed and maintained the MySQL database schema to store courier, package, and user data, also implement database queries, and optimize performance with deployment the application on AWS Cloud using services like EC2, RDS, and S3 for scalability and reliability.Dockerized the application components to ensure consistency across development and production environments using docker and docker-compose.Set up Kubernetes for container orchestration to manage deployment, scaling, and load balancing and established a CI/CD