Hiring a BlazeDS developer can significantly enhance your web application's performance. BlazeDS is a robust technology used for connecting Flex clients with Java server-side applications. It enables real-time data streaming and push capabilities, enhancing user experience through fast, interactive, and rich interfaces. A BlazeDS developer can leverage these features to create highly responsive applications that meet your business needs. They can seamlessly integrate your backend systems, ensuring smooth data exchange between client and server. Additionally, their expertise in BlazeDS can help solve complex problems and maintain your application efficiently, thus ensuring business continuity.