freelancer for firebase firestore apps freelancer for supabase postgres apps nextjs seo optimization mern stack developer responsive web design dotnet core development freelancer for realtime dashboard zustand react state library seo expert for hire react hook form performance forms react 18 features mobile-friendly website freelancer for heroku apps maintenance https://softwaredevelopersjobsnea37801.pages10.com/5-simple-techniques-for-web-developer-job-growth-71702168