E-Commerce Partner for several existing stores and new website

I run a cluster of profitable Shopify sites and one Amazon storefront, and I’m about to launch an additional, compliance-driven store for a fast-growing peptide company. Marketing and day-to-day strategy... (Budget: $250 - $750 USD, Jobs: API Integration, Digital Marketing, eCommerce, HTML, Shopify, Shopify Development, Shopping Cart Integration, Website Design, Website Optimization)