"Deedy Das recalled being asked in his interview, 'What is the next day after today in DD/MM/YYYY where all the digits are unique?' This question exemplifies the challenging nature of Jane Street's interview process."
"Jane Street made ~$40B in 2025 with 3,500 employees, achieving a profit margin of ~65-70%, which translates to $8M profit per employee, the highest for a company of its size."
Jane Street is known for its challenging interview process for quantitative researchers and traders, which has become a topic of humor on social media. A post by Deedy Das about his own difficult interview experience led to a wave of jokes referencing various unrelated topics. The firm offers high salaries to recent graduates and has achieved significant financial success, with a reported $40 billion in trading revenue in 2025. The absurdity of the interview questions has become a source of entertainment for many users online.
Read at www.businessinsider.com
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