I'm a professional amazon seo freelancer and working to increase amazon product/ebook ranking. I am also working to upload listing in amazon seller central account. I can upload listing with amazon feed/excel upload. I have created more than 2000 listings and it's still going on. Also using Amazon feed/flat file I've solved so many complex listings problem. I can increase your amazon kindle ebook/ product visibility by doing SEO in your book/product both in US and UK site. I am also working to increase the product ranking in amazon US and UK site. I have worked on many amazon products including ebook/kindle in amazon for increasing rank.
So here is the summary what I do:

★ Amazon SEO
★ Amazon ranking
★ Amazon specialist
★ Amazon Ebook ranking
★ Amazon Kindle ranking
★ Amazon variation add
★ Amazon complex flat file fixing
★ Amazon category approval / ungating
★ Amazon listing upload
★ Amazon feed upload
★ Amazon excel upload
★ Amazon Brand Registry
★ Amazon Template modification
★ Amazon inventory upload
★ Amazon listing modification
★ Amazon Europe listing
★ Amazon Seller Central Account Management
★ Amazon FBA listing
★ Amazon Product image editing using photoshop
★ Amazon Product image white background
★ Amazon Enhanced Brand Content upload
★ Amazon A+ content upload