Fix and optimization code in Unity 3D

I'm looking for a skilled and experienced Unity 3D coder to fix and optimize the code of my project. The code is intended for application on a PC. I am facing a number of bug issues that require urgent attention, so I am seeking someone who can attend to the task immediately. I would be grateful if the coder can make sure the code is optimized up to the highest standards, and have the ability to fulfill the task in an efficient manner.