Site like google payment features

The goal of this project is to create a payment processor site like Google payment or paypal. Will have some similar features. Is not required develop all details because we know this are hug sites. We need someone expert for this project, We are not looking someone sending a PM telling that are experts or " i can do it" or things like that without take time to read and understood our requirements or ask for more details. This project will be phase 1, because later will be required add more features. We are looking to a fast development so if your team think that is required buy a script first for modify it let me know, we will purchase it. Otherwise if you think is better built from scratch also let me know the reason of which is better. was suggested to use for reduce time and errors possibilites use software like [login to view URL] These site must be secure, if is used code from scratch or premade script i may suppose is required after project lauch a people thak keep looking for any bug or hole or test whole functions for avoid errors. Let me know if this person is needed or what do you suggest. We already have a bank account approved waiting for integrate the payment gateway with this system.. we need sugestion about server security or any additional security details. For that reason we need expert on this theme ----------------------------------- [login to view URL] We accept ideas or suggestion because we are looking long term relationship in all development steps of the project with selected bidder. So if after you read all documentation exist any better idea let me know. Projec Details: 1. We want to have the possibility of give merchan accounts to any user that can receive payment throught our site. 2. The frontpage of the site will have a smart search function for search companies who have merchan accounts in case any user want to pay unpaid bills or make payment to existing merchants. The users may search by categories, merchan id or name. 3. We want to provide pay buttons to other site for process secure payment thought our site. So the site must give reports of transactions. 4. will not have funciton to send /receive money like paypal. The basic idea is that merchant charge money thought internet. The system will be integrated with an existing ewallet for this function 5. The system must have email notifications 6. Other functions of systems like this 7. Easy and intuitive interface Any doubts about function or if you think is required more functions.. let me know by pm