Android/iOS App development: Maps, Communication & Dark Mode

I'm seeking a seasoned Java or Kotlin developer to develop pivotal features for Android and Swift for iOS. The targeted features encompass:

- **Google Map Integration**: Implementing comprehensive navigation capabilities within the app. This includes:
- Step-by-step Google Map guidance to the Store.
- Routing from the Store to Customer addresses.
- Real-time tracking for delivery personnel to optimize routes.

- **Communication Features**: Establishing robust interaction channels:
- A call feature enabling the driver to communicate with the shop.
- Chat and call functionalities connecting the driver with the customer.

- **Dark Mode Theme**: Introducing a manual toggle for delivery personnel to switch to a basic dark mode.

Ideal candidates should possess:
- Extensive Java or Kotlin experience.
- Proficient understanding of Google Map APIs.
- Prior experience in crafting communication systems within apps.

Note: The dark mode theme customization is basic, adhering to the system's default coloring.