I never spent much time toiling in the “sysadmin job” mines, though my first job was user support and admin. Later, I joined Google SRE and worked with both world-class and mediocre tools. As a junior SRE, you are mostly a user of these tools, though it is easy to pat yourself on the back and think of yourself as better than the run-of-the-mill admin because all this automation is available to you.
