Hiring a HornetQ developer is beneficial for managing high-volume, high-performance enterprise messaging systems. They can utilize HornetQ's features for superior throughput, clustering, failover, and load balancing. Their expertise can help in building systems with high reliability, ensuring data is never lost, and messages are delivered promptly. They can work with both Java and non-Java clients, allowing for increased flexibility. Their understanding of JMS compliance and integration with JBoss application server can be instrumental in leveraging the robustness of your system architecture. Thus, a HornetQ developer can significantly enhance your messaging infrastructure's efficiency and reliability.