First interview with the HM and someone else (never got his position) . Was prepared for first impression, general overview of my profile, experience, etc.
First thing I was told, it's a technical interview and my knowledge was to be tested! Obviously, didn't do well. Nothing they asked was unknown to me, but I either didn't have direct experience, or had one that was years old. Once the interview was over, it took me 10 min reading to refresh my knowledge and feel like I could have done much better. 10 min that could have made a difference for me and for them.
The technical "interviewer" was a impatient and difficult to understand. Kept talking over me and interrupting, obviously unhappy with my answers.
Couldn't wait for the interview to be over.