Hiring an Adobe Flex/Flash developer can be beneficial if you're working on projects involving rich internet applications, mobile apps, or flash-based games. These developers possess the expertise to deliver high-performing, visually appealing, and interactive applications. They can ensure smooth media playback, develop complex animations, and create intuitive user interfaces. With their skills, you can provide engaging and immersive experiences to your users, making your product stand out in the market. Their experience with ActionScript, MXML, and other related technologies can be invaluable in creating robust, scalable, and secure applications.