Page Speed Specialist - Shopify, WP, Wix

This is NOT a development job!
Looking for a page speed specialist familiar with Shopify, WP, and preferably Wix (not mandatory). Your only task is to optimize for page speed issues - not including image optimization.

This will mainly be:
- clean up leisure Javascripts and CSS
- address CLS warnings
- address cache issues
- address unnecessary plug-ins & add-ons.

Max 5 hrs per week.