Hiring a JiBX developer can be beneficial due to their expertise in XML data binding, a crucial aspect for data interchange in many applications. They can provide efficient, customizable solutions for converting between XML data and Java objects. With their knowledge, you can ensure seamless integration and improved performance of your applications. Their skills can also help in achieving better system interoperability, flexibility, and scalability. Moreover, they can aid in reducing development time and complexity, thereby contributing to more cost-effective software development processes.