Cross-Platform E-commerce App Development

I need a skilled developer to create an e-commerce app for both iOS and Android platforms. The app will predominantly feature physical goods.

Key Features:
- Product Listing and Search
- Shopping Cart and Checkout
- User Reviews and Ratings

Ideal Skills and Experience:
- Proven experience in mobile app development, especially for e-commerce.
- Proficiency in both iOS and Android platforms.
- Strong UI/UX design skills to ensure a seamless shopping experience.
- Experience integrating secure payment gateways.
- Ability to implement robust search functionalities and user review systems.

Please share your portfolio and relevant experience. Looking forward to your proposals!