Parser + Prestashop/Magento optimization

I will commission the creation of a parser and connect it with the most efficient Presta/Magento store

At the start there will be about 500 thousand products in the store with the possibility of expanding the store,

These products will be loaded into the store by the parser. They will contain all the data that will be provided by the external API - name, description, price, parameters, etc.

In addition, the panel should include currency converter functions (pounds, euros) with the ability to manually change the exchange rate + Margin level settings depending on the value of the product + adding an additional shipping fee.

The parser should be adapted to the limited capabilities of the external API.

The store itself should connect to a platform for management and navigation of the store like baselinker etc.