An Angular developer is responsible for creating and implementing web applications using AngularJS , a JavaScript-based open-source platform. Their duties include designing and developing user interfaces, writing and testing code, troubleshooting software issues, and ensuring seamless user experience. They work closely with designers and back-end developers, turning mock-ups into functional applications. They utilize Angular 's two-way data binding, dependency injection, and modular architecture to create dynamic, responsive web applications. They also maintain the codebase, update the application as needed, and ensure it remains compatible with all browsers and devices.