E-commerce Assistant: Need a person experienced in Amazon activiries.

I am looking for a person who is experienced in Amazon day to day activities. Person should be experienced in

1. Product listings
2. Adding relevant keywords to the listing
3. Tracking rank and feedback of all my products
4. Make a strategy for ranking my items
5. Managing Promotions, coupons etc
6. Generating reconciliation report, business report every week etc

And many more....

Minimum 20-25 hours per per week. From Monday to Saturday