react automatic batching mern stack developer react suspense data fetching freelancer for design to code freelancer for multi-language app support freelancer for pixel perfect development react micro-frontends web development agency react query data fetching freelancer for whisper api transcription freelancer for ai assistant integration responsive web design freelancer for https://zanetyyly.onzeblog.com/36368594/the-best-side-of-software-developer-kpi-template