I AM AWESOME !
We are a team of developers with expertise and experience in PHP and MySql. We have developed many custom sites of varied kinds and of varying extents and complexity. I am confident of being able to fix bugs and also enhance your site.
I request you to share the URL,and if possible admin access, sample code, database etc. I also need detailed specifications - list of fixes and enhancements. These will help me to assess scope of work more precisely and I will revise my bid accordingly.
I am sure that you appreciate that working on an existing site means a lot of study of what exists and the budget has to be feasible.
I ensure a very thorough job and also support if you need changes / enhancements in future. I look forward to hearing from you. Please check PMB for some of our recent PHP MySql projects.