Had an initial phone interview after submitting resume online with some simple brain teasers and "behavioral" questions gauging interest in the job and in the field (i.e. what my interest is in trading, whether I am applying to other positions, etc.)
I applied online. I interviewed at Five Rings (New York, NY) in Nov 2017
Interview
Ask ½ quick mental math and ½ consulting type estimation questions. It was a phone interview. You have a very short time so all work is wasted time. I would recommend having the whole logs written out so you can extrapolate between values.
Interview questions [1]
Question 1
How many liters of water does the average human consume in a day.
I applied online. The process took 4 weeks. I interviewed at Five Rings (Chicago, IL) in Dec 2017
Interview
It is a phone interview and it lasts about 30 mins. First asked me some fit questions, and then some estimation. Finally some tech question including probability and differentiation.