freelancer for firebase firestore apps freelancer for supabase postgres apps freelancer for app refactoring and cleanup nextjs seo optimization website development freelancer for design to code freelancer for multi-language app support freelancer for pixel perfect development react micro-frontends react recoil state management nextjs app development web development firm node.js https://sergiocfofz.smblogsites.com/36378880/top-latest-five-developer-software-careers-urban-news