I applied in-person. The process took 1 day. I interviewed at EY (Séoul)
Interview
First round was an in person interview with two people. They asked character questions and also guessimation questions. They were friendly and straight forward. I encourage you to ask questions to get context and solve problems together as they are open to this.
Interview questions [1]
Question 1
Estimate how many starbucks shops there are in seoul.