Transfer Data from regular website to Shopify Marketplace

Seeking an experienced Shopify website builder that can duplicate information on a current active website that I am wanting to setup an ecommerce marketplace for. Currently this company does not sell direct to customer but this is the new direction. All company information, and product information/Descriptions is needed to be brought over to a suitable Shopify template. We are able to setup pricing and back office settings as far as banking info and tax info, etc. on our end