E-commerce App Payment Integration

My fully developed e-commerce app currently lacks a payment function, preventing users from purchasing directly through the app. Instead, they must contact the supplier via text. I need a professional who can seamlessly integrate the Stripe payment gateway into the app, allowing for direct purchases.

Key Requirements:
- Integration of the Stripe payment gateway into the app
- Enabling of multi-currency support for payments, specifically USD, EUR, and GBP
- Ensuring the payment system is user-friendly and secure

Ideal Skills:
- Proficiency in mobile app development
- Experience with Stripe integration
- Knowledge of e-commerce app development
- Understanding of multi-currency payment systems

Please feel free to ask any questions you may have. Your expertise in this area will be invaluable in making this project a success.