Hi,
I do have 3+ years working experience on ChannelAdvisor, I do manage the below list of tasks there.
I have worked for few of the US clients who use the ChannelAdvisor.
1. Products upload and errors fix on CA.
2. Marketplaces template mapping from CA + Product sync review.
3. Marketplace Account set on CA.
4. I have setup the successfull template mapping for the below list of marketplaces on CA.
Amazon
NewEgg
Jet
Sears
Walmart
Rakuten
Bigcommerce
Also apart from this I do connect with CA support team for the things which needs to be done from their end and get them done too.
I do manage your project on CA.