End-to-End eCommerce Platform Build

I need a complete eCommerce solution—website plus iOS / Android apps—tailored for selling physical products. Core features must include a smooth shopping cart flow, intuitive product search and the ability for customers to leave verified user reviews... (Budget: ₹1500 - ₹12500 INR, Jobs: API Integration, eCommerce, HTML, iOS Development, Mobile App Development, PHP, Web Development, Website Design)