First-round on-campus interview:

Mainly, I was asked how I would approach a couple of algorithmic problems that the interviewer described as simplifications of stuff he works on. We discussed the solutions at a pretty high level, and I didn't have to write much code. The problems were interesting but not killer, involving dynamic programming and some combinatorial and probability calculations, and happened to draw on my strengths. I got an invitation to NYC the same day.

On-site interview day:

They put me in a nice hotel a block from their office. I had a long day of interviews from 10 am to 5 pm, with about 1-hour one-on-one sessions. There was also a laid-back one-on-one lunch at a restaurant midday. The interviewers included both programmers and quants, with corresponding questioning styles. I was posed challenging questions on software engineering, algorithms, statistics, and quantitative reasoning. There were no fit or behavioral questions beyond the introductory chit-chat. The people were all really smart, and personalities ranged between pleasant/relaxed and nerdy/quirky (nothing adversarial).

I left feeling it went OK, but I did need a lot of help on some of the problems. I got a rejection email one week later.

Three of my 150 friends have phone numbers ending in a permutation of the digits 0, 1, 4, and 9. Is this surprising?