I have been working for Amazon and other eCommerce Marketplace since last 5+ years. I had started with working for domestic clients in India and then I slowly got into international market. Just to gain in deep experience I had also made an seller account for Amazon. in and that had helped me a lot to get practical experience for the same. ? What I can do for you in Amazon? ? What can I do for you in eBay? ? Walmart:- I had worked for 50+ accounts in Walmart and have experience in listings, Optimization and categorization.