Code auditor needed - php (must know laravel), mysql

We are looking for an experience developer to conduct a code audit for us. The app you will be auditing is currently 50% developed and as a safety / stability measure we are looking for a code auditor to review the code and tell us if there are any - dangers areas, warnings, or improvements that could be made, in relation to the security, performance and stability of the app. We also need to check the app is adhering to best practices. The app itself is written in Laravel 4 using a mysql DB, there are also some ajax parts that pull data from the DB Applicants must have in depth knowledge above technologies, and must be able to demonstrate that. We will also be putting in deliberate mistakes into the code to test the auditors. We will be conducting multiple audits at different stages of the project. Please respond with any questions, and examples of your experience in these areas.