Designing and implementing database systems: .NET developers may design and implement database systems using technologies such as Microsoft SQL Server, Oracle, or MySQL.

Collaborating with other team members: .NET developers work closely with other members of the development team, including project managers, designers, and other developers, to ensure that applications are developed to meet the needs of the business.

Maintaining and troubleshooting applications: .NET developers are responsible for maintaining and troubleshooting applications, including identifying and resolving issues and bugs.

Staying up-to-date with new technologies: .NET developers need to stay up-to-date with new technologies and trends in the industry in order to develop applications that are modern and effective.

To become a .NET developer, one typically needs a strong foundation in computer science and programming, as well as experience with the .NET framework and associated technologies such as C#, ASP.NET, and Microsoft SQL Server. A degree in computer science, software engineering, or a related field is often required, along with relevant work experience. Additionally, certifications such as the Microsoft Certified Solutions Developer (MCSD) can be helpful in demonstrating expertise in .NET development.