Hello, I am very interested to work on your project.
I have worked with Facebook login on Andorid.
Recently I have developed a POS (Point of Sale) application in .NET (desktop) and in android for phones.
I had worked on web applications in PHP, .NET and JAVA so I have a good knowledge of web technologies.
We can discuss more about your project requirement and the best solution I can provide.
I will wait for your reply.
Thanks,
Tarun Sitlani