Flow Traders C++ Software Engineer interview questions

The full interview process is really outstanding. Each of the four process steps are very exciting and you get to realize that top coders work for such an amazing Company! Anyway there are four steps regarding the interview process : 1)Hackerrank online test (very nice); 2)HR call; 3)Code pair live interview on Hackerrank; 4)Final onsite interviews

The interview process is long, tedious and hard. It starts with a HackerRank test of about 12 questions of which more then half are programming assignments where you are expected to handle input and corner cases, others are just pick an answer questions. The time limit is about 2h and most people fail at this stage, it is unlikely that any candidate gets all 12 questions done in amount of time. After HackerRank testI had a pair programming interview on HackerRank with on of Senior Engineers working there, the session takes about 1h where my engineer was taking more time to put the questions then me to answer them, this one felt easy. In both cases questions are very narrow in scope, in the sense that there are particular traits/abilities to have related to C++ language that are needed otherwise one would easily fail the interview. Most questions are about template meta-programming and C++ templates, algorithms, design patterns, concurrency, etc. are kind of left out. After this you get invited to a discussion with people from management for further screening.