A .NET . developer works with the Microsoft .NET framework . to design, develop, and maintain software applications. The .NET framework is a software development platform developed by Microsoft, and the . version was released in . Here are some of the tasks that a .NET . developer might perform: . Design and Development: A .NET . developer designs and develops robust, scalable, and efficient software applications using the .NET Framework .. They use programming languages such as C# or VB.NET, and they use .NET libraries to build applications that run on the Windows platform. . Debugging and Maintenance: They are responsible for maintaining the code, debugging any issues, and ensuring that the application runs smoothly. They may also be responsible for updating the application to newer versions of the .NET framework. . Database Integration: Most .NET applications require some form of data storage, and a .NET . developer would be responsible for integrating the application with a database. They may use ADO.NET, a component of the .NET framework, to interact with databases. . Security: A .NET . developer ensures that the application is secure and protects against threats. This could involve implementing authentication and authorization, securing data, and ensuring that the application is resistant to common attacks. . Testing: They are responsible for testing the application to ensure it works as expected. This could involve writing test cases, performing manual testing, or setting up automated tests. . Collaboration: A .NET . developer often works as part of a team, so they need to collaborate with other developers, project managers, and stakeholders. They may need to participate in planning, code reviews, and other team activities. . Documentation: They are also responsible for documenting the application, including the code, design decisions, and user guides. This documentation helps other developers understand the application and helps users use the application effectively. . Deployment: Once the application is complete, the .NET . developer may be responsible for deploying it. This could involve setting up servers, configuring the application, and ensuring that the application runs correctly in the production environment. It's worth noting that Microsoft has released many updates to the .NET framework since version ., and many developers would now be using a more recent version of the framework. However, some older applications still use .NET ., and a .NET . developer would be responsible for maintaining and updating these applications.