Shopping/Payment App Development

I'm in need of a skilled Flutter developer to create a cross-platform mobile app for my Shopping/Payment App venture. The app should be designed for both iOS and Android, leveraging Flutter's capabilities to ensure a seamless and consistent user experience across platforms.

Key Features:
- A barcode scanner feature, which will enhance the shopping experience and streamline product checking.
- A comprehensive shopping cart system that is user-friendly and efficient.
- Robust payment gateway integration to facilitate secure and smooth transactions.

Ideal Skills & Experience:
- Proficiency in Flutter with a strong portfolio of cross-platform mobile apps, particularly payment, barcode scanner, shopping, maps integration.
- Extensive experience in integrating secure and reliable payment gateways.
- Familiarity with implementing hardware features such as a barcode scanner within an app.
- Understanding of user experience and interface design principles for e-commerce.
- Knowledge of both iOS and Android app development standards.

I look forward to your proposals. Please include examples of similar projects you've completed in the past.