Hi,
I had a good look at your project description and i'm very interested in providing a solution. I'm 100% sure that i can achieve this easily as i have already done similar before.
Here are few technologies which are dealing at the moment. But i'm open new technologies as well.
Platform: TFS, Android, Visual Studio 2010/2012, MySQL Server, MS SQL Server 2008/2012, ASP .Net, C#, MVC, Razor Syntax, Web Services, LINQ, Store Procedures, HTML, CSS, Ajax, JQuery.
If you like what you see and if our quote fits within your budget then please PM me your response and we will take it on from there.
Thank you for your time.