An Angular Translate developer uses the Angular Translate library to implement internationalization () in Angular applications. This involves creating translations for multiple languages, integrating them into the application, and managing language selection for users. They ensure smooth transitions, fallback languages, and asynchronous loading of language files. The developer also handles pluralization and parameter replacements in translations. They must understand the AngularJS framework, JavaScript, and JSON language file format. Their goal is to make the application accessible and user-friendly to a global audience by providing language localization.