react automatic batching react compiler optimization mern stack development company freelancer for design to code website design web development company freelancer for realtime dashboard freelancer for biometric time tracking nextjs app development freelancer for openai integration freelancer for langchain agent apps react development responsive web design freelancer for netlify https://sternpinballmachinesforsa24691.bcbloggers.com/35429484/considerations-to-know-about-hire-js-developers-at-affordable-rates