I applied online. The process took 2 weeks. I interviewed at Jane Street (New York, NY) in Sept 2024
Interview
Phone round (60 min) -> in person onsite (whole day, but it’s 2 70 minute interviews, lunch, one 70 minute interview, and ungraded q&a). Most offers are given directly onsite, after the q&a. Often they dismiss people at lunch if they did poorly in r1/2 of onsite.
Their prep guide is pretty accurate — questions aren’t totally lc style but LC definitely helps. They do seem to care more about what happens in the interview than what the final code is like, but for onsite full-solving is bare minimum. I got through the whole day but didn’t get an offer because on follow-up 2 of round 3 I had a hard time communicating my algorithm for 10 minutes. Hiring bar is really really high, partially because it’s a competitive internship, but their questions are also hella leaked 💀 best advice is to comb through the internet before your phone/onsite, and make it seem effortless when you’re there. Small bugs aren’t a big deal but if your momentum stops at any point during the interview or you need a hint you’re probably done.
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Other Software Engineer(Internship) interview reviews for Jane Street
it was nice. He was very kind and talkative. he explained the problem quite clearly. It was good experience. Will apply again definitely. Jane street is very good. You guys shud apply too
Fast and efficient, everyone is friendly.
The interview was fully techinical, no background or behavioral questions for me. The style is very collaborative — asking for hint in a proper way would be considered a plus I guess.
First round was online, one round of 1hr class design questions.
Given a class interface, you need to implement it with another given class interface. My question is like a general tree question.
You kinda need to go far enough to get to next round, so if you're too slow or have trouble solving easier parts, you cannot make it. I didn't move on.