An ActionScript developer designs and implements interactive web applications using the ActionScript language, commonly used with Adobe Flash. They create dynamic content, like animations, games, and interactive multimedia presentations. They also handle debugging, testing, and optimizing the code to ensure smooth performance. Their role includes managing data exchange between servers and users, developing user interfaces, and integrating audio and video components. They work closely with designers and other developers to turn designs and concepts into functional, interactive content. Moreover, they are responsible for maintaining and enhancing existing applications, often updating them to modern standards.