Hiring a Datastream developer comes with many advantages. Firstly, they offer expertise in dealing with real-time data processing, essential for businesses that require instant insights for decision-making. They understand the complexities of setting up and managing real-time data pipelines, reducing the time and resources spent on these tasks.

Secondly, they offer proficiency in various tools and technologies associated with Datastream such as Apache Flink, Kafka, and more. This means they can implement, scale, and manage these technologies effectively, ensuring smooth and efficient data flow.

Thirdly, a Datastream developer can help in creating robust data architectures. They can design systems that can handle high volumes of data, ensuring data integrity and reliability. This can significantly improve the performance of data-driven applications and services.

Moreover, their understanding of data processing algorithms can help in developing more accurate and sophisticated data models. This can lead to improved business intelligence and analytics capabilities, helping businesses gain a competitive edge.

Finally, hiring a Datastream developer can lead to cost savings. By efficiently managing data streams and reducing data processing errors, businesses can avoid unnecessary costs related to data management and correction. They can also increase productivity by automating and optimizing data processing tasks.