Developed a full-stack Contact Manager web application using the MERN stack (MongoDB, Express.js, React.js, Node.js) that allows users to securely manage personal contacts. Implemented user authentication and authorization, enabling users to create, view, update, and delete contacts in a protected environment. Built a responsive frontend with React and managed application state efficiently, while designing RESTful APIs on the backend for seamless data handling. Focused on clean code structure, reusable components, and proper error handling. This project demonstrates my practical understanding of full-stack development, CRUD operations, and real-world application architecture.