Hiring a JSF developer can significantly enhance your web application development process. They are skilled in using JavaServer Faces, a Java-based web application framework designed to simplify the development integration of web-based user interfaces. A JSF developer can help ensure that your applications are robust, efficient, and maintainable. They can create UI views, manage server-side state, handle events and validation, and also offer solutions for SEO-friendly websites. Their expertise also includes the ability to integrate JSF with other important Java frameworks like Spring and Hibernate, enriching your application's functionality.