Arbitrage software for ebay and amazon

I need Software required for Drop shipping from one marketplace to another- The two market places will be Amazon, To eBay : selling on ebay and buying on amazon. System : windows 8.1 Amazon US Listing monitoring, auto-ordering, tracking shipping number 1/ Listings monitoring : A dashboard or area where user can monitor pricing updates in real-time, configure pricing rules, set exceptions for individual listings Updating price and availability The software will uses Amazon api to monitor the price changes and automatically updates ebay inventory when ever there is a price a [login to view URL] will be monitored 24/7 and updates ebay immediately as price changes on amazon. Quantity will be monitored 24/7 and de-list product, quantity = 0 on ebay immediately as product is unavailable/out of stock on amazon, and list it back, initial quantity when it is available on amazon A unavailabe product depend of setup amazon prime, amazon seller, and add on item. When a listing is sold, software will update quantity in stock on ebay by +1 (initial quantity = 3, sold 1 item, so, quantity updated = 2+1 = 3) When a listing have no sold items and no orders during 1 month, software will create a similar listing and delete old listing. When a listing have sold items and no orders during 1 month, software will decrease quantity by 1. Setup monitoring : Manage Profits margins and quantity on each product or on bulk product Prices will be calculated based on the folowing setup : Ebay fee, paypal fee, paypal fee precidents (ex : 0.3$), Profit margins : net %profit margin(in %), net fixed profit margin (in $), minimum profit (in $) , Scrap setting : Sold by amazon (yes/no) Amazon prime (yes/no) No add on item Quantity 2/ Auto-ordering A dashboard or area where user can configure an monitor orders As soon as orders is placed in ebay the software automatically orders on Amazon Setup ordering : Ability to set payment method as CREDIT CARD or AMAZON GIFT CARD for orders Manually or automatic (manually, just click on order to automatically place it on amazon, and automatic = the software will automatically place the order) Gift order : yes/no Option GIFT WRAPS (no messages) on all the orders Error Codes for Automatic Ordering : Automatic Ordering (Error Code Emails) When Automatic Ordering is unable to place an order for any reason, software must indicate the problem. Automatic Ordering will not retry the order, so it is up to user to place these orders manually or use a"Retry" button in the Automatic Ordering table. Problem : internal_error, additional_information_required, expired_product_id, no_prime, payment_info_problem, max_quantity_exceeded, max_price_exceeded, product_unavailable, invalid_request 3/ Tracking shipping number The software will copy tracking number and carrier from amazon, as soon as it twill be available, and report it on eBay Candidate Requirements: - Experience with multi-threaded applications. - Portfolio of previous work. We expect this project to be completed with high quality of code and in a reasonable amount of time. We are looking for a person that we will fill comfortable working with. We have more work to offer beside this project, so we are looking for a freelancer we can work with for a long term. Desired Skills Amazon Web Services, eBay Web Services, API Development, Automation, eBay API More details from a similar software : [login to view URL]