E-commerce App Development for Android & iOS -- 2

I am looking for an experienced developer to build an e-commerce app for (Android & iOS) with features for both buyers and sellers. The app should include the following key functionalities:

User Roles & Management:
• Registration/Login for Buyer/Seller
• Profile management and role-switching
• Admin panel for user, product, and event management

Listing Management:
• Sellers can upload products, categorize them, and set prices (Buy Now or Auction)
• Buyers can browse, search, and filter listings

Advanced Search & Filters:
• Search by keywords, category, price, location, brand
• Filters like size, price range, condition, and shipping options

User Interaction:
• In-app messaging between buyers and sellers
• Rating & review system for sellers

Payment Integration:
• Stripe, PayPal, and Apple Pay integration for secure payments
• Order confirmation and processing

Shipping Integration:
• Sellers define shipping preferences
• Shipping labels and tracking with USPS API

Event Management:
• Admin posts and updates events
• Push notifications for events

Notifications & Alerts:
• Alerts for new listings, orders, messages, and events

Admin Dashboard:
• Admin controls for managing users, listings, events
• Performance analytics

Security & Privacy:
• Auth login and SSL encryption
• Account privacy settings

AI Features:
• AI for pricing recommendations, dynamic descriptions, and inventory management
• AI chat assistant for buyers and sellers