50k Marketplace Portal & App

I’m looking for a complete marketplace listing solution built with PHP (latest stable version) and MySQL on the back-end, paired with a native Android app. The web portal should let me manage three distinct roles—Admin, Seller, and Buyer—each with the appropriate dashboards and permissions... (Budget: $250 - $750 USD, Jobs: Android, API Development, Database Design, Database Management, Java, Kotlin, Mobile App Development, MySQL, PHP, Web Development)