Flutter E-commerce App Development -- 2

I'm seeking an experienced Flutter developer to create a mobile e-commerce application. The app should be compatible with both iOS and Android platforms.

Key requirements include:
- User-friendly interface and seamless navigation
- Secure payment gateway integration
- Robust backend support for inventory and order management
- Advanced search and filter options
- User reviews and rating system
- Push notifications for deals and updates

Ideal skills and experience:
- Proven experience in Flutter development
- Strong portfolio of mobile e-commerce apps
- Expertise in integrating payment gateways
- Knowledge of backend technologies
- Familiarity with UI/UX design principles

Please provide examples of relevant work and estimated timelines.