Hi, I have 10 years experience in software design and development, experience in C++,C# 2.0/3.5/4.0 and web applications
(Javascript, CSS, HTML, Asp.Net, SOAP, AJAX, IIS 6.0/7.0/7.5), MS Sql 2000/2005/2008
In the last 5 years I am developing and maintance few web applications and web service applications on server with lot of daily traffic.
I can implement and develop application by your specification in C# 4.0 (Windows phone 7.1 or 8.1) without bugs and ready to be publish on market store.
Best regards