A Full Stack .NET developer is a software developer who has expertise in the entire web application development process, including both the frontend and backend development. .NET is a framework developed by Microsoft, and a Full Stack .NET developer is someone who is proficient in developing web applications using the .NET framework.

A Full Stack .NET developer typically has a solid understanding of HTML, CSS, and JavaScript, which are used for frontend development. They are also skilled in using various libraries and frameworks such as Angular, React, or Vue.js for building dynamic user interfaces.

On the backend side, a Full Stack .NET developer has experience in using ASP.NET, C#, and SQL Server for developing web applications. They are also knowledgeable in RESTful APIs, security protocols, and server administration.

Overall, a Full Stack .NET developer has the skills and expertise to develop end-to-end web applications, from designing the user interface to building and deploying the backend services. They work closely with designers, product managers, and other developers to create robust and scalable web applications that meet business requirements.