Amazon storefront optimization for a client

I'm seeking an experienced freelancer who can help me optimize my clients Amazon storefront. In particular, I need help increasing visibility and incresase conversions. My goal is to make sure my products are not only listed and loaded, but also selling well. To achieve this, I would like my freelancer to focus on enhancing the customer experience through a well-rounded strategy. This should include search marketing strategies and product optimization, leaving no detail untouched. Ultimately, I'm looking for someone who can take my clients online presence and turn it into a profitable endeavor.