I had two interviews. Both of which were panel-style. The first was technical, where many standard questions were asked in the first half with the last half getting filled with a Codility test and discussion.

The second interview was less technical, and seemed to be more about personality and fit. Both interviews lasted about an hour.

While I was prepared for the gamut of questions (which were asked) such as the last good technical book I read, some recent tech that I find interesting, challenges I've overcome, etc, an unexpected question was asked about my pet peeves.

Although I wasn't ready for that ahead of time, we explored questions on that subject for a while, times it's come up, how it was handled, etc.