iPad Application - Interact with .NET WebServices

We seek a remarkably simple iPad application that allows a user to login, receive a list of files available for download, and download their requested document (saved in PDF format). Elegance of the application is not important to us at this point. Most importantly, we need an experienced mobile developer who can user clear, concise code to accomplish this project and do so in a way that is easy to expand upon. (We are happy to have you work on the next leg of this project, as well, if your work is satisfactory) THIS APPLICATION MUST INTERACT WITH ASP.NET WEB SERVICES. .NET web services use SOAP an should be easy to interact with. Using simple web service calls, you will be able to Authenticate the user, Get a list of available document names and their unique integer identifier, and make download requests which return an array of bytes, containing the file they requested. We are open to having this project made in objective-c, obviously... but we are also open to using a multi-platform language such as Titanium. We need this project completed yesterday. Serious, experienced developers only. We seek to form long-term business relationships with our developers.