Android Ecommerce App Development

I'm looking for a professional who can create a simple yet modern and sleek ecommerce app for Android. This app will cater to my products and will be utilized once our seller is ready to place orders.

Key requirements include:
- Implementing a reliable and user-friendly shopping cart.

The ideal freelancer for this project should have:
- Extensive experience in Android app development, particularly in ecommerce apps.
- A strong portfolio showcasing modern and sleek design aesthetics.
- Proven skills in creating efficient shopping cart systems.