hire react developer react concurrent mode react devtools ai assistant react wasm integration react edge computing dotnet core development web design company zustand react state library nextjs app development freelancer for openai integration freelancer for langchain agent apps freelancer for whisper api transcription freelancer for ai assistant integration freelancer https://remingtonjprsu.blogdosaga.com/36267112/the-best-side-of-software-developer-kpi-template