Custom Telegram App Development

I'm looking for an experienced developer to create a controlled Telegram app for both Android and iOS. This app needs to allow full admin control over groups, channels, and chats. As an admin, I should be able to add or remove groups/channels remotely and send notifications to users.

Key Features:
- Full admin control over all communications
- Detailed monitoring of user activity within groups and channels
- Remote management: Adding or removing groups/channels
- Sending notifications to users

Ideal Skills:
- Cross-platform mobile app development (Android & iOS)
- Experience with creating modified versions of messaging apps
- Excellent understanding of Telegram's API
- Strong skills in implementing user monitoring systems
- Proficient in remote management feature integration