Becoming the go-to person in a given area or process will quickly get you to "senior" which is what the article is talking about. It is easy to get stuck at thi

Becoming the go-to person in a given area or process will quickly get you to "senior" which is what the article is talking about. It is easy to get stuck at this level as you say but the trick still works to get to staff the flavor just changes a bit, you have to be more of a generalist.