I applied online.
Had an OA, an online technical interview that was very Leetcode-y, and a superday onsite in New York with more technical questions. Don't remember as much about the earlier rounds, but the superday was somewhat difficult and really required you to be able to fluidly explain and solve the problems.
Don't really remember technicals; why do you want to work at Jane Street
The following metrics were computed from 6 interview experiences for the Jane Street Software Engineer Internship role.
Jane Street's interview process for their Software Engineer Internship roles is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for Jane Street's Software Engineer Internship interview process.