Whoever didn't hire you wasn't looking for a software developer, they were looking for a devops guy. Its nice to know devops as a programmer, and I wish more programmers did, but most programmers I know actually flunk on anything sysadmin related.
If their criteria is devops, but they're looking for a programmer, they're going to get some dude that only knows Javascript and footguns the entire company into an early grave.
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Who told you that?
Whoever didn't hire you wasn't looking for a software developer, they were looking for a devops guy. Its nice to know devops as a programmer, and I wish more programmers did, but most programmers I know actually flunk on anything sysadmin related.
If their criteria is devops, but they're looking for a programmer, they're going to get some dude that only knows Javascript and footguns the entire company into an early grave.
I agree.
I'd say it's nice to know about them and the basics as a Senior, but I don't think it's something needed to master.