I applied through other source. I interviewed at Flow Traders
Interview
2 rounds of interview (3 if you include phone screening). first round is more technical skills, second round is more whether you perform under pressure. The questions may not be difficult if you had your computer in front of you, but remembering pricing formulas off the top of your head isn't something everyone can do.
Interview questions [1]
Question 1
Simple things like how interest rates work, how do you hedge and keep a matched book. But they mix it into a real world question and put time pressure, which is very real on the trading floor.