The interview process consisted of several steps. The first was a telephone interview, in which a quant asked me to solve a few probability/statistics problems. Then, I was called by an HR guy, who spent quite some time warning me that the job was going to be in Dublin, seemingly to make sure I would not be expecting to work in a great place, which was a bit surprising, since I see nothing wrong with Dublin. Anyway, after that, he sent me some data sets with some questions to answer in a week time. I sent them a report about it, and got called again for extra statistics/probability problems, this time administered by other quants. After that, the same HR guy called me again, and arranged for a final interview at their offices. This consisted again in several hours of statistics/probability problems, plus other questions seemingly about "algorithms" and my personal tastes in the use of programming languages. Got a rejection email a week later.
As for the interview questions, they were all standard, basic, prob/stats stuff. Practically, either apply Bayes theorem, or build a tree, and then crank numbers; nothing more, nothing less. The algorithms questions had nothing to do with actual algorithms or data structures, but, rather, they were incredibly boring data-cleaning problems. Anyway, nothing to do with actually interesting problems or situations.
As far as human impressions, the company is within the norm. Most of the people I met there were just alright. A couple of them were actually quite nice, and of course there were some with a distinctively negative attitude as well, such as a young, very arrogant IT guy who was surprisingly ignorant in mathematics but was acting like he was omniscient in the subject, perhaps due his lack of appreciation of his own ignorance. In general, however, my impression is that none of the people I met were anywhere as smart as they thought they were.
