I was recommended by an employee for an open position at iShares, which was acquired about a year ago by BlackRock, a much larger organization. The process started out with a phone screen by a manager. HR was involved from NYC; the position and all f2f interviews were in San Francisco. HR was perfunctory on my side of the process, and seemed only to set up interviews. HR couldn't answer basic questions about the people who would be doing the interviews, like titles of the interviewers were or what group they were in. About three weeks after the first phone interview, HR set up 5 f2f interviews which were handled very well. HR set up 5 more interviews, then cancelled them the day before, then reset for a couple weeks out, and these were also well conducted.