Hiring a Data-BASIC Programming developer is beneficial as they possess a unique skill set. They are experts in managing and manipulating large databases, ensuring optimal data integrity and security. They can create efficient, robust, and scalable applications, suitable for business environments that require high-speed data processing. Their expertise in legacy systems can also prove invaluable for maintaining and upgrading existing applications. Furthermore, their problem-solving abilities and deep understanding of business processes make them capable of delivering tailored solutions, thereby improving business efficiency.