Ruby On Rails Programmer sought to help on social retail site

We are a social retail start up that provides a marketplace for independent retailers. Our site is in prototype form and requires Paypal integration as well as a working shopping cart to help us launch this year. What we are looking for is a programmer with RoR and Github experience as well as some of if not all of the following: RoR plugin Spree Active Merchant / Paypal adaptive payments Google Maps API Any other skills like jquery, ios or html 5 are desirable as well. As we are self funded we have $750 available for you to complete some or all of the tasks listed to get us to launch.