Shopify final check + go live (QA only)

I have a Shopify website ready with products, images and descriptions completed.

I need an experienced Shopify developer to carry out a final check and assist with going live.

Tasks:

Test full checkout process
Check shipping rates are working correctly
Review mobile and desktop layout
Check all links and pages are functioning
Ensure product pages display correctly
Assist with publishing the updated theme (switching from current live site)

Important:

No redesign or copywriting required
No changes to pricing or structure
This is QA and technical check only

Looking for someone fast, detail-oriented, and experienced with Shopify. Ideally completed within 24–48 hours.