There is no normal. What my job was a few years ago was completely different than what it is today. As soon as I have it dialed in, the company changes and the team changes and my role changes as a result. What the company needs is always evolving, and I don't get to choose what I want to do as much as I thought I would be now - which is OK. It keeps me in this position of learning new things and keeping me humble. There is always something I don't know, and I'm comfortable with that.
