Where I work we have regular round tables, in which you can talk and ask questions to middle management from other departments than your own. I had the opportunity to talk to a person who manages development priorities and staffs teams, and who of course has some insight into hiring and the interview process. That was very enlightening.
For example, finding people to hire in a large organisation is a hard job. Hiring rates are quite fixed, so in order to find people to hire you need to go through a relatively fixed, larger number of resume reviews, phone screens and face to face interviews. Assume that for each three people you would want to hire you need to sift through 100 resumes – that’s 10.000 resumes to look at for 300 people to hire. And it can not be automated.