Reminds me of some Twitter lore from 2012. I was just an intern....
This is back in the Rails days, before they switch to Scala.
I heard that there was a fail-whale no one could solve related to Twitter's identity service. IIRC, it was called "Gizmoduck."
The engineer who built it had left.
They brought him in for half a day of work to solve the P0.
*Supposedly*, he got paid ~50K for that day of work.
Simultaneously outrageous but also reasonable if you've seen the inside of big tech. The ROI is worth it.
That is all.
Disclaimer: don't know if it's true, but the story is cool.