Hiring an Amazon SimpleDB developer is crucial for managing and organizing large amounts of data in a structured manner. They can leverage this highly available and flexible non-relational data store to simplify the process of storing and querying data sets at any scale. This expertise can help reduce your operational burden, as SimpleDB automatically manages infrastructure provisioning, hardware and software maintenance, and data replication. Moreover, their skills can help ensure high availability and durability of your data, which can greatly enhance your business operations and decision-making processes.