100+ shopify products listing to Zalando + Barcode for each SKU

We have 2 shopify websites and we have now got approved to list on Zalando. We have started listing each product onto Zalando, but need someone to take over and complete listings.
Products on Shopify have SKU but no barcode. Barcodes have been purchased from GS1UK and each sku (7 SKUs per product listing as we are clothing retailer so each item has 7 sizes) and the barcodes need to be assigned indivually to each SKU.
Then all the product info: name, description, SKU, size, barcode, wash instructions etc need to be collected from each product listing on shopify and entered into Zalando.
We also have a folder of product images which need to be imported to a photo hosting site then linked to each zalando listing.

Please ignore budget and provide quote.