Hello Dear.
I have read your requirements carefully.
I am high skilled and rich experienced developer in your project areas.
I have done many project with big scope and complex concepts.
If you would like to check out me, please see through below link.
https://www.freelancer.com/u/mingxiao2008
I would like to confirm project details through message.
Thanks for reading my proposal.
Best Regards.
hi.
i am amazon,eBay senior developer.
i have full experience for amazon and eBay .
my skill can satisfy your requirement fully.
if you hire me i will work best quality and you will get good result.
if you want i will send my amazon and eBay management program screenshots.
i will wait your chat.
thank you.