Reached final stage of interviews, started with a test on excel which was quite straight forward. Then a maths problem solving call which was a bit tricky but not too bad with practice. Then a coding call, also not very difficult but think it's more about communicating what you're doing (for the maths call as well) so make sure to talk through every step in your thought process and explain clearly. Final stage was in office, very nice people but was again a bit unclear on what was actually being tested. There was an hour trade ticket design discussion and then a data validation task. No behavioural questions throughout the whole process. I also was not given any feedback even after the long process.