freelancer for app refactoring and cleanup nextjs seo optimization react suspense data fetching web programming website design freelancer for pixel perfect development freelancer for headless ecommerce sites react component-driven development react recoil state management reactjs freelancer web development agency react query data fetching vue.js development mobile-friendly website rea... https://fernandomcnxl.theideasblog.com/36927756/about-web-developer-online-courses-coursera