Amazon eCommerce Product Launch Marketing Consultation and Content Creation

I am launching a new series of related products on Amazon in the health and wellness sector. I need an experienced marketer who can help both with high-level concept design, as well as help with tasks like optimizing listing details, generating A+ content and amazon store content. I'm looking for someone I can establish a relationship with and work with periodically over the long term. I'm looking for someone with an established portfolio of successes in the eCommerce space, specifically amazon.