ondemand application for multi business commerce thru product sale and mobile services

IN NEED OF A MOBILE APP DEVELOPER WHO CAN BUILD A ON DEMAND MOBILE SERVICE APPLICATION THAT NEEDS TO BE CAPABLE OF OFFERING SKILLED SERVICE LIKE FAVOR ( They deliver anything you need minus a few age specific products) & BUKUNOW (They provide skilled service contractors with membership options which give options to businesses who want to be exclusive as far as using their own contactors or employees through the app) MUST HAVE BEAUTIFUL UI TEMPLATE WIREFRAME WITH FRONT END AND BACK END SOCIAL MEDIA REFERRAL INTERGRATION PAY SYSTEM ( i would like to pay the community for refferals as well as have a monthly contest for multiple categories like most five star services, most referrals, most business signups) I will need to be able to integrate a system that allows me to co partner with a bank to prover service providers with company credit cards. which would allow the company to be paid by the customer after the company purchases the items. must allow for uploading of documents securely aswell as background checks. i would like to have it be spanish and english. with control over categories sub categories logo splash screen rates etcetera. PRICE NEGOTIABLE BUT MUST BE NICELY PUT TOGETHER I already have a ideas for it, I just need it to be built.