Resale Marketplace App Development

I need an experienced developer to build a resale marketplace app for both iOS and Android platforms. The app should feature:

An app-only marketplace (iOS & Android)
Buyer/seller profiles
Product listing and search
In-app payments (with commission logic)
Optional: Boosts/subscriptions for sellers
Integration with local courier/delivery
secure backend + future scalability
User authentication via email/password and phone number verification

Ideal Skills and Experience:
Mobile app development (iOS & Android)
Experience with in-app payment integration
Strong UI/UX design skills
Backend development for account and product management
Experience with courier tracking integration
Security protocols for user authentication

Please provide a portfolio with similar projects.