react concurrent mode back end developer web design website design freelancer for pixel perfect development freelancer for headless ecommerce sites react component-driven development react recoil state management reactjs freelancer react query data fetching react hook form performance forms web design and development freelancer for ai assistant integration responsive web https://josuevgjkm.verybigblog.com/35435155/how-software-developer-key-skills-can-save-you-time-stress-and-money