E-commerce Android App Development

I'm in need of a skilled Android developer to build a comprehensive e-commerce application.

Key Features:
- Fully functional advertisement system
- To create different pages based on customer design related to sort ot "My Profile" typical section

Ideal Skills:
- Proven experience in Android app development, particularly in e-commerce.
- Knowledge of secure payment processing systems.
- Expertise in creating intuitive user interfaces.
- Experience with phone number based user registration systems.

Please provide examples of similar projects you've completed.