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!