Wordpress Site Performance Boost Needed i need to do performance 90

I'm in need of an experienced Wordpress developer who can optimize my website for improved speed. With a performance test recently conducted, I want the performance score to be bolstered up to close to 90. Although the key focus is on speed, the freelancer must be careful not to disrupt the site's functionality, especially since it plays host to several entities.

Ideal Skills and Experience:
- Expertise in Wordpress
- Proven track record in site optimization
- Broad understanding of web hosting features and requirements
- Robust problem-solving skills, complete with a keen eye for detail
- Sound knowledge of speed optimization tools and techniques

Roles:
- Perform site analysis to identify speed bottlenecks
- Implement appropriate speed optimization techniques
- Monitor performance before and after optimization
- Provide regular updates and reports
- Ensure unhindered site functionality throughout the process