Hiring a Light JS/JQuery developer is beneficial for creating interactive, fast-loading, and seamless web applications. They have expertise in lightweight JavaScript and JQuery, which enhances website functionality without significantly impacting loading times. They can create dynamic content, handle user events, develop animations, and manage AJAX requests effectively. Their skills can lead to improved user experience, better performance, and increased user engagement on your website. They also offer the advantage of cross-browser compatibility, ensuring your application works seamlessly across various browsers. Overall, they can significantly contribute to your web development project.