freelancer for app refactoring and cleanup nextjs developer for hire nextjs seo optimization mern stack developer freelancer for design to code react micro-frontends dotnet mvc developer web development services web development agency technical seo services react 18 features react development freelancer for netlify functions setup freelancer for fly.io deployment https://areappdeveloperssoftwaree82368.alltdesign.com/dotnet-maui-cross-platform-apps-no-further-a-mystery-58092095