Hi there,
I already gone through the all information or description which is detailed by you. You are looking for "Shopify Website Audit and Solve some issues"
I have much experience of working with Shopify,
I have knowledge of HTML, CSS, jQuery, AJAX, PHP etc.
I can customize theme in Shopify and can make any design with free theme and can use all Shopify apps.
I am waiting to be hired for this project to show my skills and works together to get the milestone.
Thanks
Regards, Rizwan. A