C# code to access REST & WebSocket API

I need a programmer to write concise, OO C# code to access the BitMEX API. I want a single class to serve as entrypoint for the WebSocket and REST APIs, exposing methods to retrieve quotes, retrieve orders, retrieve positions and place orders. I will provide an interface for you to program against, and if you are successful in implementing the BitMEX API I will ask you to do similar work for AllCoin, BitStamp, Poloniex, etc.