Customizing and development of wordpress based Deals , CashBack site

i am a publisher and i post offers and deals and i get paid by other affiliate marketing like commission junction user has to visit merchant site using my link and i get paid when user make any purchase using my link but my question is that i am running a cashback website when user purchase any thing from merchant site by visiitng merchant site using my link i pay user some part of commission but now its manual user has to send me mail his transaction details refer [login to view URL] so i want to remove this mailing thing now i want that when user clicks on link and make a purchase online and upon sussceful transaction user account is automatically credited using cashback amount this requires integration of thirdparty affiliate API and our website [login to view URL] Currently this is wordpress based site based on genesis framework apart from the above i want some customization like adding slider , improving look and feel and so many things like that displaying coupon in widget from coupon site [login to view URL] this all is basically wordpress multisite adding features and so many things like that I request all developer to please go through site and contact me so that i can explain detailed requirement