How can you determine what a developer is doing in their professional activity?

A developer in professional activity is engaged in creating, supporting, and improving software. This includes writing code, testing, debugging, designing application architecture, as well as interacting with other team members (analysts, testers, managers). In the context of C#, a developer can create applications on the .NET platform, work with databases, web services, user interfaces, and ensure the quality and performance of software products.