I applied online. The process took 3 months. I interviewed at University of Cambridge
Interview
It takes around 45minutes on Zoom/Skype. Started from several (~9) technical problems related to ML, maths and coding. Followed by past research project presentation. Slides were required. Interviewer discuss technical details and asked about possible extension/drawback of the work.
Interview questions [1]
Question 1
technical problems include: a) ML basics and concepts; b) knowledge about statistics, linear algebra, real analysis; c) programming practice and implementation issues.