I have done this before, usually if I am working on something interesting, and for which I don't like any solution I have yet hit on. In this case, I do the best I can to describe the problem, thinking thus far, etc, and turn the interview into a design session at the whiteboard.
I can only recommend doing it with a candidate you are more selling to then evaluating, and whom you think will be a good fit.
A strong candidate will jump in and you'll have a great session (I had one in particular with a great young erlanger whom we wound up losing to someone else, but the interview left a lasting impression and we kept in touch long afterwards).
I can only recommend doing it with a candidate you are more selling to then evaluating, and whom you think will be a good fit.
A strong candidate will jump in and you'll have a great session (I had one in particular with a great young erlanger whom we wound up losing to someone else, but the interview left a lasting impression and we kept in touch long afterwards).