An ASP.NET Web Forms developer designs, develops, and maintains web applications using the ASP.NET Web Forms framework. They create user interfaces with server controls, manage state information, and handle events. They also use ADO.NET for database interaction, ensuring efficient data retrieval, manipulation, and storage. They manage application configuration and deploy applications to servers. Additionally, they ensure applications are secure, scalable, and reliable. Debugging and troubleshooting are also their responsibilities. They often collaborate with web designers and other developers to integrate front-end elements and provide a seamless user experience. They must follow best coding practices and stay updated with technological advancements.