The only person I've ever heard of being fired for an operational error was a principal networking engineer at Amazon who end-ran DNS policies and hand-edited a zone file. Somehow, the file got truncated. It brought down everything including the soft phones so people couldn't even spin up a phone-based conference call to deal with it. I think Amazon was down for several hours, with 8 digit losses. That was in the mid 2000's. Heard that person was fired but don't know for sure.

If a single person can cause the failure during the course of their normal tasks, it's not the fault of that person it's the fault of designers of the systems and processes used by that person.

"Asking for a friend."

I kid. If it were to come down to a single person, that's really a failure of the whole organization system and not of the individual.

This apocryphal [1] punchline to the Jack Welch story also sums up how most orgs deal with this sort of thing:

"I just spent a million dollars on your education - why would I fire you now?"

[1]: http://www.nickmilton.com/2016/03/jack-welch-on-learning-fro...

This question doesn't deserve downvotes. While the answer is quite clearly in the negative (this will be a process failure, not a human failure), it looks as though it was asked in good faith, and might not be so obvious to those outside the industry.

Vote buttons are not a substitute for proper responses to legitimate enquiry.

How could anyone answer that question? We don't even know that an engineer made a mistake in the first place, much less what the mistake was and what led up to it.

Thanks everyone for providing the insights, I have no ill-intention, just asking for curiosity sake.

Nope:

https://www.usenix.org/conference/lisa19/presentation/turner

That’s not the culture at facebook

What makes you think it was a mistake? What makes you think an engineer did it?

Sometimes things just break and take time to fix.

If they are then Facebook is worse than I thought.

nope. an individual is never blamed for these sort of issues.