Jane Street Software Engineer (internship) interview questions

The programming test was conducted on CoderPad using my preferred programming language. There were two interviewers present: a lead interviewer who guided the session and a second interviewer who observed and evaluated my performance. The main focus of the interview was not on syntax accuracy or whether the code could be executed perfectly on the spot, but rather on how to design structured, clean, and optimized solutions. Minor syntax mistakes or forgetting the exact name of a function were generally acceptable, as long as the intended functionality and approach were clearly explained.