Quant Developer
Builds the trading systems, with interviews that start with coding.
The interview process
- 1Coding testOnline · typically 60 to 90 minTwo or three programming tasks with hidden test cases.
- 2Live codingVideo · typically 1 to 2 screensWrite and explain code while the interviewer watches.
- 3SuperdayOn site or video · typically 3 to 5 interviewsAlgorithms, system design and a behavioral round; at fast trading firms also C++ and latency.
Rounds typically 4 to 7 interviews after the testTotal typically 3 to 8 weeks
Question categories
Sorted by how often they come up for this role, my own estimate from public reports.
01Coding (Python)Very commonEasy6Medium6Hard602ProbabilityCommonEasy7Medium7Hard703BrainteasersCommonEasy7Medium6Hard604BehavioralCommonEasy5Medium5Hard505Questions about your projectsCommonEasy5Medium5Hard506StatisticsSometimesEasy7Medium6Hard607Finance TechnicalsRareEasy5Medium5Hard508Stochastic CalculusRareEasy5Medium5Hard509Mental MathRarePractice generator10Market Making and Betting GamesRareEasy6Medium6Hard6