A .NET developer is a software developer who uses Microsoft’s .NET framework and related languages, like C#, VB.NET, and F#, to design, code, test, and maintain software applications. These applications can be web-based, desktop, mobile, or cloud-native and run on various platforms, including Windows, Linux, and macOS. Developers also collaborate with teams, analyze user needs, and ensure the quality and scalability of the software solutions they create.

Design and Development: Create software solutions and applications using the .NET framework and C#.
Coding: Write and maintain high-quality source code for different types of applications.
Testing and Debugging: Identify and fix bugs in the software to ensure functionality.
Collaboration: Work with other IT professionals and teams to meet project requirements.
Maintenance and Enhancement: Improve and update existing software to align with business objectives.

Programming Languages: Proficiency in C#, VB.NET, or F#.
Microsoft .NET Framework: Expertise in building applications using this platform.
Application Development Models: Experience with models like ASP.NET for web applications.
Cloud Platforms: Familiarity with platforms like Azure for deploying and running applications.
Version Control: Knowledge of tools like Git for managing code.

.NET developers can build a wide range of applications, including:
Web Applications: Using frameworks like ASP.NET.
Desktop Applications: For Windows and other desktop platforms.
Mobile Applications: For iOS, Android, and Windows.
Cloud-Native Applications: Scalable solutions for cloud environments.
Artificial Intelligence (AI) and Machine Learning (ML) Applications: Using C# and Azure services.