> But there are orders of magnitude fewer people are hired yearly into director positions than something like an L5.
That is true, but gives no indication of how many Director candidates they have to go through as Google has "a lot* of L5s. I would expect the C-Suite to get the high-touch approach, as they probably screen less than a dozen interviewees for CxO.
Let's ballpark this (simplified). Say there's a 1:3 manager to L5 ratio, and 1:5 director to manager ratio. We'd roughly expect 1 director to be hired for every 15 L5s. If Google hires 1500 L5s a year, then it would hire 100 corresponding directors. If it averages 20 applicants per post, that's about 2000 screens per year. Would that justify getting specialized recruiters? I don't know
Aside: this used to be the kind of "estimate/puzzle" question Google used to ask it's interviews, allegedly