Multi-platform Grocery Ordering and Barcode App

I need an experienced developer to create a multi-platform grocery ordering and barcode scanning app. The app should be available on both iOS and Android, and must include the following features:

- A comprehensive grocery ordering system
- An efficient barcode scanning feature
- A secure system for user accounts and login

Additionally, the app needs to support multiple languages. You should have a strong background in app development, with specific experience in creating ordering systems and barcode scanning functionalities. Knowledge in implementing multi-language support in apps is also a plus. Please provide previous examples of similar apps you have developed.