react developer react automatic batching mern stack developer web programming dotnet developer web development company dotnet mvc developer web development services reactjs freelancer freelancer for openai integration node.js development freelancer for ai assistant integration vue.js development freelancer for netlify functions setup flask development react native web ruby on rails https://andyjbkze.thenerdsblog.com/42289577/not-known-factual-statements-about-software-developer-kerja-apa