Engaging Reward-Based Social App Development

I'm searching for an experienced mobile app developer for both iOS and Android platforms. The project involves creating a social mobile application with an integral aspect of Twitter API integration.

Key Functionalities Needed:
- Tweet Posting: Users should be able to post tweets from within the application.
- User Profile Information Retrieval: The application requires to pull user information from their Twitter profiles.
- Real-Time Hashtag Monitoring: The app should have the ability to monitor certain hashtags in real-time for accurate data gathering.

User Engagement Metrics:
I want the app to measure user engagement using the following metrics;
- Number of likes
- Number of retweets
- Number of replies

The gathered data will then be used to give rewards to users based on their levels of engagement.

Ideal Skills and Experience:
- Proven experience in mobile app development for both Android and iOS.
- Strong knowledge and experience working with Twitter API.
- Familiarity with creating and managing reward systems in mobile apps.
- Excellent understanding of user-engagement optimization strategies.
- Web3 experience