So the number fluctuates and it depends on how much availability you have and when, but for example we tell people that 15 interviews of availability will generally translate to about 10 interviews. This varies by season, as we add new clients, etc. So in the fall generally just about every hour you make available we can book, but in the summer when everyone's on vacation it'll be lower.
We also do deals with our more engaged interviewers to either employ them full time, or give additional contract work to help fill in the hours when they have more desire to work than interviews available. For example we have interviewers involved in mentoring, reviewing other interviews, creating new questions/formats, engineering work, etc.
Hey, thanks for the question! We have a good amount of volume that we actually keep just for newer interviewers, like interviews for internal software engineering roles, and many of our interviews-of-prospective-interviewers. I just asked the folks who run our interviewer team for more detailed info, though, and will update here when they get back to me (probably Monday morning).
We also do deals with our more engaged interviewers to either employ them full time, or give additional contract work to help fill in the hours when they have more desire to work than interviews available. For example we have interviewers involved in mentoring, reviewing other interviews, creating new questions/formats, engineering work, etc.