Multi-Vendor Delivery Marketplace App Developer – Android & iOS

We need a developer to build a delivery marketplace app for Android and iOS. The app should support multiple vendors, customer orders, delivery tracking, and secure payments. You will help create a smooth user experience, implement core marketplace features, and ensure the app works reliably across both platforms. Experience building scalable mobile apps and delivering a polished final product is important. Please share relevant examples of similar projects and your approach to development, testing, and launch.