Hiring an Apache Impala developer is beneficial for managing large data sets more efficiently. They can provide real-time, high-performance processing and analytics of data stored in Hadoop clusters, enabling faster decision-making. Their expertise in SQL queries, data partitioning, and parallel processing facilitates rapid data exploration, transformation, and enrichment. They can help in designing scalable and flexible systems, optimizing performance, and ensuring data security. This investment can lead to improved business intelligence, strategic insights, and competitive advantage.