Jane Street Software Engineer(Internship) interview questions

talked with engineer at college career fair, and then applied online and got an interview. phone screen with an engineer, writing codes online for about 45 minutes. Leetcode easy~medium level, didn't pass it

Applied online, and received a very prompt response within a couple of days to schedule a phone interview. The phone interview is an hour long, and consists almost entirely of a series of coding questions that build off of each other and increase in difficulty. The first couple of questions I got were leetcode-medium/easy, which I was able to solve within 20 mins. The next question was much harder and more open-ended. I was only able to code a brute force solution for this one. There was a couple of follow-up questions, which I was able to give verbal answers for. Was invited for a virtual on-site next. Consisted of a couple of 1hr 15 min interviews with 2 interviewers in each round. The first interview involved a leetcode style problem, while the second was focused on object oriented design, and neither required any particular 'trick' to solve. I was able to code an ugly but working solution to the first problem, and only half a solution to the second one. Was booted out rather rudely after a short break. I suppose they're only looking for people who can code flawlessly and clinically.