I only went to their office for a get-to-know-you type interview. I sat down with two people - one from HR and a senior engineer. From the get-go, I was put off by the fact that both were somewhat indifferent and/or unfriendly, especially the engineer. They hadn't really read my resume - some of their questions were already answered there. They also didn't pay attention to some of what I was saying, because I had to repeat certain things.
The engineer was looking around the room half of the time when I was talking, was condescending and tried to pick a quarrel with me a few times over what I thought about the work process at my current job.
At the end, they asked me about my current salary and the salary I wanted.
I turned down the second interview.