So oddly tier iii is just tier 2. Most places don’t have a tier 2.

1 years experience as sysadmin is great. Here’s the neat little trick no one tells you: what you say your job is on your resume should reflect WHAT YOU DO. Not the title of what you were hired for

Are you doing dev ops at a small outfit as a support engineer? Your resume should not say “support engineer.” It should say what your tasks reflect to the market. Not what some dude said your position is.