Developer Needed to Build Third-Party Telegram Client App with Ads

I am looking for an experienced developer to build a third-party Telegram client app. This is not a Telegram bot and not a Telegram Mini App. I want a custom Telegram client where users can log in with their Telegram account and use Telegram normally. The main feature I want to explore is showing ads inside the app interface. For example, ads could appear while users scroll through stories, near the top messaging area, in the chat list, or in another suitable place inside the app. I am open to advice on the best and safest way to do this technically. What I need: Build a third-party Telegram client app Allow users to log in with Telegram Show normal Telegram chats and messages Add simple ad placements inside the app Track how many ads each user views Make sure the app is stable, secure, and user-friendly Make sure the app follows Telegram API rules and app store requirements Ideal developer experience: Telegram API TDLib or MTProto Third-party Telegram client development Android app development Ad network integration App store compliance Please include in your proposal: Have you built a third-party Telegram client before? What ad placements do you think are technically possible? What are the main risks with this idea? How long would it take to build a basic MVP? I am looking for someone who can be honest about what is possible and help me build a clean, simple app.