An ASP.NET MVC developer designs, develops, and maintains web applications using ASP.NET MVC framework. They create robust and secure server-side code, integrating front-end designs with business logic. They work with databases, ensuring efficient data storage and retrieval. They also troubleshoot and debug applications, fixing bugs and improving performance. They often collaborate with front-end developers and UX designers, ensuring the application is user-friendly and feature-rich. They may also be involved in testing, deploying, and documenting the application, and often work in agile, team-based environments. Their goal is to create high-quality, efficient, and maintainable web applications.