Submitted CV and then got sent a 1.5h technical test.
Test was 4 questions; 2 basic python, 1 MySQL, and 1 basic data science.
The questions themselves weren't too difficult but I did run out of time. Probably could have managed it if I had done a bit of preparation beforehand. As with many of these technical tests, the time constraints can make it more of a test of speed-coding so it helps to have some pre-prepared code fragments that you can call on to solve whatever problems they throw at you