I applied through college or university. I interviewed at Jane Street in Feb 2012
Interview
Basic mental math. They are more interested in how you solved it.
Basic probability question with follow up scenario, 1 brain teaser.
Interview questions [1]
Question 1
Suppose n people on the bus.
At the first stop, 2/3 people get off and 7 get on
At the second stop, 2/3 people get off and 7 get on
Similarly, at the third stop, the same..Ignore the rest of bus stop
find minimum people on the bus before first stop/initially?
I interviewed at Jane Street (London, England) in Jan 2026
Interview
einen runden spiele am Vormittag und dann programmieren am nachmittag.
Biem spiele hat man parallel wetten sollen, also ein buy and sell zwishudn ein sechseiiger Würfel und sowas. oder karten wetten auf das die karte rot ist und zwischen 5-9 was zahlst du für diesen output und so. anrfang rechnen danach abschärtzen udn Ergebnisse interpretieren
Overall, it was a pleasant interview experience. I answered a few personal questions and encountered one that was slightly confusing, but the interviewer was friendly, and the conversation flowed well overall
Probability questions, nothing crazy but quite open ended, they want to know your thought process and calculations. Pen and paper allowed but no calculator. No OA, a few rounds and got rejected. Zoom call with a trader.