This thesis presents the design and implementation of a full-stack e-commerce web application using React.js for the frontend and Spring Boot for the backend. The system enables users to browse products, register, log in, add items to the cart, and place orders, while administrators can manage products and categories. The backend includes role-based access control and secure user authentication with Spring Security and JWT tokens. MySQL is used as the relational database to store users, products, and order data. The application has been configured for future deployment on AWS.