Hiring a .NET MVC developer is beneficial as they can create robust, scalable, and efficient web applications using Microsoft's .NET framework and Model-View-Controller architecture. They have expertise in server-side programming, database interactions, and frontend development, ensuring a seamless user experience. .NET MVC developers also understand code reusability and separation of concerns, which promotes clean, maintainable code. Moreover, they can leverage .NET's comprehensive libraries and tools, reducing development time and costs. Their ability to integrate various Microsoft technologies and services can also enhance your application's functionality.