freelancer for firebase firestore apps hire react developer freelancer for app refactoring and cleanup nextjs developer for hire fullstack dev website development freelancer for admin dashboard ui react devtools ai assistant react wasm integration react micro-frontends freelancer for realtime dashboard react recoil state management zustand react state library jotai https://claytongicfg.full-design.com/new-step-by-step-map-for-job-opening-for-web-developer-in-new-york-78727427