I applied online. The process took 4 weeks. I interviewed at Jane Street (London, England) in Jan 2020
Interview
A written question was sent out, with a few weeks to submit an answer. Followed by an interview discussing probability questions in detail, then another interview of the same style.
Interview questions [1]
Question 1
It has a 60% chance of raining on Saturday and 40% chance of raining on Sunday, what is the probability it rains neither days. They then gave some more information regarding conditional probability and asked about that.