Our firm generally has 2 rounds of interviews, and recruits almost exclusively (though not entirely) current undergraduate and graduate students. The first round consists of 2 30 minute interviews, and the second round consists of 2 45 minute interviews (with more senior members of the firm). Our ideal candidate meets a number of criteria - they are analytically minded (strong mathematically, and also show a good intuitive sense for math problems / assessing data), a strong communicator, a structured thinker (e.g., able to communicate and think in an organized manner), and a friendly / down-to-earth person. All candidates that are considered have very strong academic track records and significant extracurricular involvement, along with significant and impressive involvement in past internships / jobs.