The interview process was very informative. Mostly just asked behavioral questions, but make sure you understand how the company makes money. After the interview you take a mental math test at an agreed time. The questions aren't too hard but you have 10 minutes for 75 questions, so make sure to practice decimal division and multiplication before hand

First was a mental maths test of roughly same level as Optiver 80 in 8. Then had a 1-1 interview with HR, did not pass as had not researched company well enough.