Hiring a JBoss AS developer is beneficial for businesses seeking robust, enterprise-grade, open-source solutions. They provide expertise in Java applications, ensuring optimal performance, scalability, and reliability. They can efficiently manage and configure JBoss application server, integrate various software, and troubleshoot issues. Their knowledge of Java EE standards helps in developing portable, reusable, and secure code. Furthermore, they can leverage JBoss's features like clustering, caching, and persistence to enhance application efficiency. Their skills can be instrumental in reducing operational costs, improving system architecture, and ensuring timely project delivery.