Hiring a Core Data developer is beneficial for managing and manipulating structured data in your iOS applications. They bring expertise in data persistence, synchronization, and efficient data handling. They ensure smooth, fast, and secure data transactions, which enhances app performance and user experience. Their skills in object graph management and data migration support app scalability. With their knowledge in Core Data, they can design more sophisticated search capabilities and better manage memory in your applications. They can also assist in troubleshooting and resolving data-related issues quickly. Overall, they play a key role in creating robust, data-driven applications.