Hiring a JBoss developer can be beneficial as they can leverage this robust, open-source Java EE-based application server to create enterprise-grade applications. They can manage complex tasks, including clustering, caching, and persistence, which are crucial for high-performance systems. Their skills in JBoss can ensure seamless deployment and management of your applications. Furthermore, their knowledge of Java and Java frameworks can extend beyond JBoss, providing flexible solutions for your business. Ultimately, their expertise can lead to improved system functionality, efficiency, and scalability.