Supermarket Sales App Development

I'm looking for an experienced app developer to create a comprehensive supermarket application for Android. The app should be user-friendly and include the following key functionalities:

- Product listing and search
- Shopping cart and checkout
- User accounts and profiles
- Online payment integration
- Sending ads/notifications
- Order and inventory management

Ideal candidates should have:

- Proven experience in developing Android applications, especially for e-commerce or retail.
- Strong UI/UX design skills to ensure the app is user-friendly.
- Experience with online payment integration.
- Knowledge in implementing order and inventory management systems.

Please provide examples of similar work and your approach to ensure a seamless user experience.