Simple checkout using Barclays MPI facility

Hello, We are looking for someone who can develop a simple checkout for customers to order a choice of two downloadable products. The facility is to use the Barclays MPI facility. Please, we are only looking for someone who has experience with the Barclays MPI facility. Please do not apply if you have not developed an MPI checkout before. The website will be done by someone else, so there is no need to worry about that. The checkout, which you are to develop, will open in a pop-up with a coloured background and the website logo at the top. My requirements are: 1. Has experience with Barclays MPI 2. Is reliable and will meet all deadlines 3. Can be easily contacted during the day by email, telephone, or Skype.