Hiring a Java SE developer is beneficial due to their proficiency in a robust, secure, and widely-used language. They can develop versatile applications ranging from web services to desktop applications. Their expertise in object-oriented programming ensures clean, modular code, easy to maintain and upgrade. They are well-versed in handling memory management, multithreading, database operations, and networking capabilities. Their background in Java SE also provides a strong foundation for dealing with Java EE for enterprise-level applications. This versatility and broad applicability make a Java SE developer a valuable addition to any team.