Tesing - Unit Testing / Mock Testing

We've developed a serious bit of code (about 2 million lines).

So we currently need a tester to go through some libraries and make sure our product works.

All code is held in GitHub. You'll be using MSTest built into Visual Studios.

We probably have two weeks of testing initially. But if you prove invaluable we'll keep you on longer.

Please quote an hourly rate + any relevant experience you have.