The interviewer was very friendly and open to discussing his personal experience in the position and the pros and cons of the position. This was the first interview and was on-campus. The interview was half behavioral and half quantitative assessment. My only advice is to be relaxed and to be yourself during the interview. Alarm.com is a smaller company and part of what they are looking for is if you're a good fit. If you aren't acting like yourself, it won't benefit either party.