I interviewed at DRW (London, England) in May 2021
Interview
Totally a waste of my time. Their HR is very unprofessional and rude. I had a talk with the tech leader of the team and then they sent me a take-home coding exercise (Java/C++). It took me 5 hours to complete it. I was rejected after a few days. I sent an email to HR asking for the feedback coz it passed all the test cases locally and time/space complexity looks good as well. They did not reply at all. Worst interview process ever.
Interview questions [1]
Question 1
one take-home coding exercise after 45 mins chat with tech lead
Leetcode like question with follow ups on c++ concepts like virtual memory, address space, etc. Coding everything from scratch and there’re also weird concepts like function pointer. Question was not too hard but need to remember concepts and syntax clearly
HR, take home coding tests, behavioral, technical discussion, live codings for several rounds.
The live codings are a bit hard. Some are about problems solving, some are about data structure and algorithms.
I applied online. The process took 4 weeks. I interviewed at DRW (London, England) in Aug 2025
Interview
Did a set of interviews in summer 25. The interviews were not that difficult, mostly problems you'll face in real life. The interviewers themselves were mostly nice, although a couple seemed like they didn't care, not very involved in the process.
Got rejected due to 2 sections having "mixed signals": one generic "not deep enough", the other didn't like the approach to solving a problem (it was solved on time anyway). Funnily enough, got praised for using the same approach in other section. Mixed signals also came from the people who wouldn't have been on the same team.
It would be nice if interviewers were aligned on evaluation criteria, otherwise it becomes a guessing game.
Other that that it was a positive experience and the rejection was delivered by phone, not a generic email.
Interview questions [1]
Question 1
Some very down-to-earth problem on coding section, pleasantly surprised.
Unfamiliar algo problem, more like medium-hard.
And a data modelling exercise.