freelancer for firebase firestore apps react streaming ssr react concurrent mode react signals state management full stack web developer hire full stack developer react edge computing web design company web development services technical seo services web design and development react hydration strategies vue.js development react virtualized rendering react native https://software-developers-bls79012.slypage.com/37037102/new-step-by-step-map-for-software-developer-vs-web-developer