API integration and web development

We require a professional, target orientated E-Commerce website. Customers will have user accounts, Log-in to back end portals (API to be integrated, API document would be provided), and purchase additional products online using a variety of payment options (Paypall, Credit etc). The website must be eye catching, demographically targeted and very user friendly- Using block page formatting, thin page styling and eye-catching pictures and photo’s. All pages should use the same Font and colouring continuously throughout, with the use of a simple background. All box type links should have strong background branding. There must be a ajax query option functionality in place enabling customers to ‘Select/search’ their desired destination and see rates which would be automatically calculated from the back end with access to make changes and amendments at any given opportunity. Must be good with API integration