An AppleScript developer primarily designs and writes scripts that automate processes within the Apple operating system. This can include tasks like opening applications, manipulating files, controlling system settings, or interacting with databases. They use the AppleScript language, which is designed to automate repetitive or complex tasks. They need to understand the syntax and functionality of this language, as well as the specific behaviors of the applications they are scripting. Their job also involves testing, debugging, and enhancing scripts to ensure they run optimally. They often collaborate with other developers or users to understand their needs and create customized solutions.