Hiring a developer is beneficial as they have expertise in web development, both front-end and back-end. They are proficient in HTML, CSS, JavaScript, and server-side technologies, ensuring a fully functional and visually pleasing website. Their knowledge of databases, data modeling, and user interface design enable them to create efficient and user-friendly web applications. They can also implement security measures to protect your site. Additionally, their understanding of modern web development frameworks and tools can significantly speed up the development process and improve the quality of the final product.