react server components freelancer for supabase postgres apps react concurrent mode back end developer react compiler optimization react suspense data fetching website design dotnet core development freelancer for biometric time tracking freelancer for openai integration react hook form performance forms node.js development modern web design mobile-friendly website freelancer for https://sternpinballmachineforsal77776.shivawiki.com/7527920/everything_about_web_developer_need_coding