E-commerce App Development for iOS and Android

I need an experienced app developer to create a comprehensive e-commerce application available on both iOS and Android platforms. The app should facilitate seamless transactions, user-friendly navigation, and secure payment options.

Key Requirements:
- User accounts and profiles
- Product listings with search and filter options
- Shopping cart and checkout process
- Secure payment gateway integration
- Order tracking and notifications
- User reviews and ratings
- Customer support chat feature
- Admin panel for inventory and order management

The app should be visually appealing, intuitive, and optimized for performance. I am looking for candidates with proven experience in developing e-commerce apps, a strong portfolio, and the ability to deliver within a month.