Cross-Platform E-Commerce App Development

I'm looking for experienced app developers to create a cross-platform e-commerce and retail app.

Essential Features:
- Product catalog and search
- Shopping cart and checkout
- User reviews and ratings

Payment Integration:
- PayPal
- Banking infrastructure

Ideal Skills and Experience:
- Proficiency in developing cross-platform mobile applications
- Experience with payment gateway integration, especially PayPal
- Strong background in UI/UX design for an intuitive user experience
- Familiarity with implementing user review systems

Please provide examples of similar projects you've completed. Looking forward to your proposals!