I applied online. I interviewed at Five Rings (New York, NY) in Oct 2022
Interview
Interviewed with them twice, once my freshman year and once my Junior year. Four Rounds total 1. Phone Screen (Purely technical 30 second responses) 2. 2 Trader interviews, Probability Games 3. Superday with multiple rounds My interviewer didn't show up to one of my first phone screens and also some of the people are just straight rude. It's 50-50 whether you receive a pleasant interview experience or you get a jerk. Even the HR screens interviewers are really rude.
Interview questions [1]
Question 1
First round 1. Tenth root of 10 2. Log_{1.2}(3) 3. Water in a olympic pool 4. Weight of a baby elephant 5. Digits in 50 ! 6. Max slices of a pizza after 10 cuts Second round: 1. Roll 6 sided dice EV 2. Roll 2 6 sided dice, only get to roll the second one if you can't roll a sum over 10 (so first is 4 or lower). Find the EV 3. Now you can choose the number of sides, should the lower sided dice be rolled first or second 4. Find the optimal number of sides to maximize the EV Third Round: 1. Given a tournament of 8 teams, what's the probability that two teams will meet if they have .5 probability of advancing to the next round, assuming the matchups are randomly selected 2. Now there are 9 teams and every round one team is selected to advance at random at each level, what's the probability that the two teams will meet. Superday: Never made it this far
Quite hard, few probability questions but they did give hints
Interviewer was nice, hour long interview with mostly technical questions and a few behavioral questions (tell me about yourself)...
The interviewer said there were a couple of rounds to get the winternship role
OA was on mental math, probability, and geometry. You need to answer the questions extremely quickly. Make sure you are submitting your answers correctly as the software is a little awkward.
Only did the OA, got questions such as estimating the Arc length of sin(x) from 0 to pi. Is rapid fire, with ~20 mins for 15 of these difficult questions.