Experienced expert needed for Shopify Mobile Page Speed Optimization

Hi, We have a Shopify store here [login to view URL] And currently we have a poor Page Speed Index for mobile. Note that we also use a landing page builder app called Zipify Pages, which must not be broken. At the minimum we need lazy loading of images implemented and also resolving some render blocking issues. But we also want all other speed opportunities explored too. The scope of the project is: 1) Analyse our Shopify site and report on all the speed issues and provide recommendations 1a) Assess technical risk of implementing recommendations on other apps and supportability of site. 2) Reduce First Contentful Paint to under 3s and TTI to under 6s 2) Implement the recommendations 3) Implement lazy loading without breaking Zipify 4) Improve the render blocking 5) Help remove any old app code that is still hanging around after un-installs 5) Help with LOSSLESS compression of images if needed 6) Must be tested on a non-live page first, before rolling out to live environment Please ONLY bid on this project if you have actual experience doing successful speed optimization on Shopify stores and can provide references. Thanks! Chris