Cross-Platform Grocery Delivery App Development

EXPERIENCED DEVELPORER seeking an experienced developer to create a comprehensive grocery delivery app for both Android and iOS platforms. The app should be user-friendly and efficient, supporting multiple user roles and payment methods.

Key Features:
- User Registration and Login: Secure and easy access for customers, delivery personnel, and admins.
- Product Catalog and Search: Comprehensive grocery catalog with advanced search functionalities.
- Order and Delivery Tracking: Real-time updates on order status and delivery progress.

User Roles:
- Customer: Browse products, place orders, and track deliveries.
- Delivery Person: Receive and manage delivery tasks.
- Admin: Oversee operations, manage users, and control product listings.

Payment Methods:
- Credit/Debit Cards
- PayPal
- Cash on Delivery

Ideal Skills and Experience:
- Proven experience in developing cross-platform mobile applications.
- Strong knowledge of secure payment integration.
- Familiarity with backend systems to manage multiple user roles and real-time tracking.
- Excellent UI/UX design skills to ensure a seamless user experience.

Please provide examples of similar work done and your approach to this project.