Hiring an ActionScript developer is beneficial for creating interactive, dynamic websites and applications. They can leverage the power of this object-oriented language to build rich Internet applications, video games, or flash-based applications. With their expertise, they can create intuitive user interfaces, optimize website performance, and ensure compatibility across multiple platforms. They offer efficient solutions for complex problems, thus enhancing user experience and engagement. Their skills can ultimately lead to improved customer satisfaction, increased web traffic, and potentially, higher business profits.