Mobile & Blockchain App Development

I'm seeking an experienced full-stack developer to build a mobile application on both iOS and Android. The app will be blockchain-based using Binance Smart Chain and will incorporate a referral-driven reward system.

Key Features:
- User Authentication: Secure login and user management.
- Referral System: Incentivized sharing to grow the user base.
- Reward System: Blockchain-based rewards for user engagement.

Ideal Skills and Experience:
- Proficiency in mobile app development for iOS and Android.
- Experience with Binance Smart Chain and blockchain integration.
- Strong background in building secure authentication systems.
- Familiarity with developing referral and reward systems.

Looking for candidates with a proven track record in similar projects. Please share your portfolio and relevant experience.