freelancer for firebase firestore apps react streaming ssr react concurrent mode back end developer fullstack dev web design react devtools ai assistant react micro-frontends zustand react state library freelancer for machine learning integration react query data fetching freelancer for langchain agent apps freelancer for whisper api transcription react memoization https://ghostbusters-pro14690.blogsvila.com/36558227/facts-about-web-developer-qualifications-required-revealed