Website with Login Functionality with Weclapp REST API Integration

I'm looking for a skilled programmer to integrate a REST API with Weclapp (https://www.weclapp.com/de/) . The primary focus of this integration will be on data retrieval and display on a website.

Requirements:

1. Login Functionality:

The login is only accessible to customers who meet the following criteria:
- party?customer-eq=true&customAttribute35672577-eq=true
- The password is sourced from the field customAttribute35691746 in the entity party.
- The login name (email) is sourced from the field customAttribute35711202 in the entity party.

2. Post-Login Inventory Retrieval:

- Only display inventory items where the articleId in the entity article has a selectedValue matching the ID of the aforementioned customer (e.g., "Customer Number: Customer Name (ID)" Example of a selectedValue: "10137: 100% Fitness Bad Emstal (240000)").

- additionalProperties pickableStockQuantity.quantity > 0
- The items should be displayed with the following details:
- Images (articleImages)
- Article Number (articleNumber)
- Name (name)
- Description (description)
- Country of Origin (countryOfOriginCode)
- Unreserved Quantity (additionalProperties pickableStockQuantity.quantity)

Additional Information:

The project is feasible without an extra database, as weclapp will be used as the database.
The website should also be accessible as a Progressive Web App (PWA).

You'll find the documantation for the weclapp API here: https://www.weclapp.com/api/