Wordpress Developer (PHP) - Cyber security

We're a busy agency looking to grow.
I have an internal project that I'd like to find someone for. If they prove reliable and skilled then they can stay on as a full-time member of our dev team.

The project:
We want to move all our wordpress sites to WPMU hosting. They have migration tools so it is pretty easy.

Some sites will be out of date so will need plugin updates, some of these will have conflicts that need patching, or upgrading to work on PHP 8.
We also need to get all current hosted sites completely up to date, clear of any malware and secure ---------- itial tasks:
- update plugins on sites
- ensure they work
- migrate sites
- clean malware

PHP skills will be essential.

Experience cleaning malware on wordpress will be essential