I applied online and got the phone interview from the lab manager a week later. It was a very nice and relaxed conversation, the interviewer talked very clear and slow. She introduced this position and her lab at first, then she asked me several standard questions, all within my expectations. We talked for about 10 minutes and it was really a nice talk. I asked about the recruitment procedure and she said there would be a second interview with the PI. A week later, I got her email said that the job was filled and I didn't get it. I was quite surprised, because I could feel that she was very satisfied with my performance and credentials, but I even didn't get the second on-site interview. And she said there will be second round of interview but then the job was filled by someone else just several days after the phone interview. I really couldn't understand why, it was quite frustrated since this shouldn't be a very difficult job to get, considering the poor pay.