Android E-commerce App Development

I need an experienced developer to create a mobile e-commerce application for Android. The app should provide a seamless shopping experience, similar to leading e-commerce platforms.

Key Requirements:
- User-friendly interface and navigation
- Secure payment gateway integration
- Robust search and filter options
- User account creation and management
- Product review and rating system
- Push notifications for offers and updates

Ideal Skills & Experience:
- Proven experience in Android app development
- Strong background in designing e-commerce applications
- Expertise in payment gateway integration
- Knowledge of UI/UX design principles
- Familiarity with backend technologies and databases
- Excellent problem-solving skills and attention to detail

Please provide a portfolio showcasing similar projects.