An ActionScript developer designs and implements interactive features for websites or applications using ActionScript language, often in conjunction with the Adobe Flash platform. They create dynamic content such as games, animations, or interactive forms. Their tasks include writing, testing, and debugging code, ensuring cross-platform compatibility, and integrating other technologies like HTML or JavaScript. They also work on improving user interface and experience. Regular collaboration with designers or other developers is common for them. Additionally, they are responsible for keeping up-to-date with the latest industry trends and advancements to implement in their projects.