Mobile App Development for Water Purification & Delivery Logistics (Android & iOS)

We are looking for an experienced mobile app developer or a small team to build a robust and user-friendly mobile application for a purified water production and distribution company. The goal is to optimize order management and streamline our delivery logistics. Key Requirements: Customer App (Android & iOS): User Registration: Easy sign-up process capturing the customer's full name, phone number, and delivery address. Delivery Photo Upload: Users must be able to upload a photo of the exact location/spot where they want their water delivered to guide the drivers. Intuitive Ordering: A seamless interface allowing customers to place purified water orders effortlessly. Admin Panel / Backend: Real-time Alerts: Automated, instant alerts triggered every time a new order is placed. Interactive Map & Geolocation: A live map displaying the precise location of each order via interactive pins. Logistics Tracking: Tracking the elapsed time since an order was generated to ensure efficient delivery route management and high performance. Technical Stack & Expectations: Cross-platform development (such as Flutter or React Native) targeting both Android and iOS. A solid, scalable backend to manage user data, real-time requests, and media storage securely. Clean code, clear documentation, and a focus on performance and real-time reliability. Important Note: Fluency in Spanish is strictly required for this project, as the final app, user interface, and communications must be entirely in Spanish.