You don't specify .NET applications, and I don't see anyone who submitted with experience, but if you ever need a .NET developer, I've been working with .NET since the pre-beta, was on the Microsoft EAP (Early Adopter Program). I can program in C# and VB.NET but I prefer C#. I am also working with Blazor currently. Prior to that, I worked with classic ASP, and IDC before that as well as Cold Fusion. I have experience with eCommerce software and have also worked with Umbraco in the past. I have some Shopify experience, but just for one project as a favor to a neighbor. You seem to have more than enough Shopify experts already.
Rates can be contingent upon your budget and project.