I had got the interview through INFORMS conference. I had submitted my resume in one of their booths and they had interviewed me for Operations research position on the following day.

The interview was an phone interview with the operations team of 6 people interviewing me over the phone. The interview went on smoothly. People were nice to me. The interview questions were very detail concerned including lots of professional questions on the operations research models and algorithms. Although I did not get the position, what they interviewed was very helpful to my future interviews preparations.