c sharp code reengineering and bug fix

I am looking for a C# developer to help me reengineer and fix bugs in my existing code. The current state of the code is working but with bugs that need to be fixed. I need this project completed within a week, so it is important that the developer has experience working on tight deadlines. The main priority for this project is bug fixes, so the ideal candidate should have experience in identifying and fixing bugs in C# code.