I need a firebug expert to modify a website

I am looking for a firebug expert to make functionality changes a website. The project has a tight deadline of 1 day, so I need someone who is experienced and can work quickly. The main priority is to fix bugs on the website. Ideal skills and experience for this job include:
- Strong knowledge of Firebug
- Experience with website development and bug fixes
- Ability to work under tight deadlines
Please note that the project only requires functionality changes and not layout adjustments.