Expert PHP Developer - Freelance

Seeking an experienced PHP Developer. We have a very old Wordpress theme, it has old classes that expired a long time ago, we need to update the theme to the latest version. There are a lot of code fixes needed. Additionally we use PHP 7.44, I want to gradually upgrade our PHP to 8.0, then 8.1 etc. until we are up to PHP 8.5. I want to hire someone that has a lot of experience fixing Wordpress theme issues when upgrading and also experienced in fixing errors when upgrading a wordpress site PHP to newer versions.

can pay PHP 800 per day (shifts are Mon-Fri: 8am to 5pm Phils time, (12-1pm lunch break)
Paid weekly. Working Evenings and Weekend overtime is also possible.