PHP Developer for Performance Tuning

I'm looking for a PHP Developer with at least 2 years of experience to help with bug fixing and maintenance, specifically to address performance issues in our existing application.

Key Requirements:
- Proven experience in PHP development
- Strong problem-solving skills
- Familiarity with performance optimization techniques

Ideal Skills and Experience:
- Knowledge of debugging tools
- Ability to work independently and meet deadlines

Please provide examples of previous work and relevant experience.