Hiring a Google Chrome Developer Tools developer is beneficial as they have expertise in diagnosing problems, debugging code, and optimizing website performance. They ensure cross-browser compatibility, enhance user experience, and reduce load time. These developers can manipulate DOM elements, monitor network operations, and profile JavaScript usage in real-time. Their skills with Chrome DevTools help in efficient development and testing, saving time and resources. They play a crucial role in building high-quality, interactive, and responsive web applications, making them a valuable asset to your development team.