PHP Performance Optimization and Site Maintenance

I'm looking for an experienced PHP developer to enhance my website's performance and maintain its security.

Key Tasks Include:
- Fixing performance issues in existing PHP code.
- Optimizing for faster load times and reduced server load.
- Maintaining and updating sites by:
- Keeping security certificates current.
- Updating outdated software.

Ideal Skills and Experience:
- Strong proficiency in PHP.
- Experience with performance tuning.
- Familiarity with security protocols and site maintenance.

Please provide examples of similar work done.