Connection with Citibank US

We need the connection with Citibank in the US. We will develop a portal and Android app for a company that needs to develop the following: (NOTE you can send offers to do all the project but we are mostly interested in the citybank connection to make the credit card payments.) 1. Web Portal (e-commerce + service management system) * Virtual shopping cart (e-commerce) developed by us. It wouldn’t be a customized open source. * Customized payment (with Citybank) THIS IS THE PROJECT! * API connector for cellphones (android in this case) * Calendar to manage the service appointments * Appointments administrator * Service administrator * Recent services administrator * GPS Tracking of employees 2. Android application * GPS indication of the position of the employee while he is not in the shop. * Login and Password for employee identification. * Calendar / upcoming appointments section * The upcoming appointment details with product / service lists with specifications