[orta]

The syntax is written like a bash shell variable, the idea (I assume) is that the actual job itself doesn't matter but the idea of it being something they do for work does (because contextually it means they have less decision power.) So, if it were me, saying I work for Puzzmo is about as useful as me saying I work for $DAYJOB in a sentence like that.

[pjerem]

Also it’s just some HN slang. No more, no less.

[wging]

Way more, actually. It likely predates HN by decades.