API Integration with a Flutter Application

I’m looking for a Flutter developer to integrate existing, ready-made REST APIs into a Flutter application.

The application is an e-commerce marketplace (online store / marketplace), where users can browse products and categories, manage a shopping cart, place orders, and complete purchases through a payment gateway.

The API is fully implemented and available in a Postman collection. The required work is API integration only, with no backend development or modifications.

Scope of Work:
- Approximately 50 API endpoints, fully prepared and documented in a Postman file
- Integration is limited to sending requests, receiving responses, and connecting data to the UI
- The application includes typical marketplace features such as product listing, cart management, orders, and checkout
- No notifications system is included in the application
- No backend-related work is required

Design:
- The application UI is fully completed using Flutter
- The integration should follow the existing design as-is

Implementation Method:
- The project will be divided into three clear phases
- Each phase will be reviewed and approved before moving to the next one

When applying, please include:
- The estimated time required to complete the project
- Any general questions regarding the project scope