Tropical Fish Auction and Raffle App

I'm looking for a skilled app developer to create a platform for both bidding and "buy now" sales of tropical fish and related items. The app will also include a section for raffling new products.

Key Features:
- User Accounts: Standard, Seller, and Admin
- Platforms: iOS and Android
- Payment Methods: Credit/Debit Card, PayPal, Bank Transfer

Ideal Skills and Experience:
- Experience in developing multi-user mobile apps
- Familiarity with payment integration
- UI/UX design skills for an intuitive user experience
- Knowledge of auction and raffle mechanics

Looking for a developer who can bring this concept to life with a user-friendly and engaging interface.