JavaScript (ES6+), React, Node.js, Express, Redux, MongoDB (Mongoose),JWT, HTTP-only cookies, React Router, PayPal API, Git, GitHub, React-Bootstrap, Postman

Developed a full-stack eCommerce platform for Heehee," from engineering & designing, to implementation using the MERN stack. It is a modern, user-friendly shopping experience with advanced features including backend-to-frontend user authentication, authenticated user paths with tokens, protected payment integration (PayPal and credit/debit card methods), and user/admin management functionalities with complete interfaces to all clients.

• Built with React.js, Node.js, Express, and used Redux for state management, centering server-side functionality and secure data flow along with pleasing UI.

• Used MongoDB database with Mongoose for data storage and manipulation, including custom database seeder scripts for streamlined data operations (e.g., delete all datas & import all datas in a run), clearing and populating users, products, and orders.

• Developed fully responsive user interfaces(mobile, tablet or desktop) React, React-Bootstrap, and Toastify. Built reusable components such as CheckoutSteps, Headers, Loaders, PrivateRoute, Ratings, and Reviews, and integrated them into screens like HomeScreen, CartScreen, OrderScreen, and RegisterScreen.

• Implemented React Router for navigation, including distinct paths for regular users, authenticated users, and admins. Organized all routes in a centralized index.js file for easy scalability and maintenance.

• Managed global state with Redux, creating slices to cover different API endpoints. Utilized common hooks, reducers and builder functions like query and mutation for state updates and validation.

• Secured user authentication with JWT and HTTP-only cookies, ensuring end-to-end protection of sensitive information from backend to frontend.

• Ensures the price and sensitive user information remain secured and static, excluded possible hacking or tampering from client side with functional objects such as userInfo and orderId, using data directly parsed from and only from the database.

• Used Postman to test all associated routes and ensure proper functionality and response handling.

• Built shopping cart functionality with product editing, quantity adjustments, and comprehensive error handling.

• Built user profile interfaces for order tracking and personal account management.

• Built admin tools for managing users, products, and orders, including an order delivery tracking system.

• Integrated PayPal API for payment processing.

• Added advanced features like product search, carousel, pagination, and user reviews and rating systems.

• Configured and deployed the application to a production environment with environment variable management.

• Used GitHub for version control.