OLX Clone | Full-Stack Marketplace Web Application

I developed a full-stack online marketplace inspired by OLX Pakistan, where users can buy, sell, and connect with each other through a simple and responsive web application.

The goal was to build a complete marketplace experience, from creating an account and posting advertisements to finding products and communicating directly with sellers.

I built the frontend using React and Tailwind CSS, while the backend was developed with Python, Django, and Django REST Framework. PostgreSQL was used to manage application data.

The platform includes several key features:

User registration and login with email or phone OTP verification

Google authentication using OAuth 2.0

Advertisement posting with multiple product images

Product categories and subcategories

Advanced search with location, category, and price filters

Favorites to save interesting listings

Real-time-style buyer and seller messaging

Responsive layouts for desktop and mobile devices

One of the main challenges was building a secure authentication system. I implemented OTP expiration, resend cooldowns, failed-attempt limits, and backend validation to improve account security.

I also focused on making the marketplace reliable by handling invalid uploads, incorrect product categories, and pricing validation.

This project helped me strengthen my experience in full-stack development, REST API integration, authentication, database management, and building complex web applications.