The interview was very laid back and the interviewers were super nice. They would ask questions and give you hints to find the answer if needed. The first round was a coding assignment in C++ which was sent to me an hour after I applied for the job. The test was similar to what others have described: telling what a function does, finding bugs, code optimisation, use cases, etc. Then, a phone interview was scheduled for discussing my answers. At the final stage, I had a 3 hours interview in Belfast office. I was asked basic questions about Python, Numpy, Git, Linux, and Machine Learning followed by some behavioural questions. Finally, we had a lunch together. I really enjoyed the friendly manner of the interviewers and the prompt responses after each interview stage (less than a week). I asked for feedback after getting rejected for the position and received some helpful feedback from them.

1st stage: Online untimed test, given a piece of code and have to explain what it does, identify the bugs, and then provide a more efficient implementation. Short numerical reasoning question where you have to provide the correct inputs to return the right output in a program. Final part was on use cases for a program, very simple. 2nd stage: Phone interview where they go through the test only. If your code is not perfect, the interviewer will try to guide you into a more optimal solution and see if you can figure out how to make it more efficient. Unfortunately I slipped up here and wasn't able to provide a more efficient solution despite the hints. In hindsight, the problem was very simple. I think the interview was strange, but reasonable. The interviewer