In the past, if you were a developer, it was a specialist certain area. You wrote your code in a language that you controlled well and after a few months the application was tested and in production taken. Nowadays, that works differently. The speed of development is higher, there is a close cooperation in multidisciplinary teams and because you are coming into contact with more and more areas knowledge broadening necessary. In which areas does the developer's work change and what does this mean to you?