freelancer for firebase firestore apps freelancer for supabase postgres apps react automatic batching react signals state management full stack web developer freelancer for multi-language app support responsive web design web development services jotai state management technical seo services web design and development freelancer for ai assistant integration responsive web https://buyusedpinballmachines47913.tribunablog.com/not-known-details-about-software-developer-edmonton-50729786