I applied through an employee referral. The process took 6 weeks. I interviewed at Google DeepMind (London, England) in Jan 2019
Interview
Very pleasant, but quite drawn out, i.e. a total of 7 interviews.
First one was a quiz. Requires preparation, but then not too difficult and actually quite fun.
Then several 30min interviews with researchers.
Lastly one interview with HR.
Interview questions [1]
Question 1
Basic math, stats and cs questions. They provide you with a list of materials to look into, which I'd strongly suggest you do. If you do, the interview won't be a problem.
The interview involved a 2 hour quiz covering topics from Math/CS to statistics. Afterwards, you have team matching interviews with one or more teams, as well as a culture interview with HR.
I applied online. I interviewed at Google DeepMind
Interview
1) Applied online
2) Screening interview with hiring manager via Google Hangout
3) Technical quiz covering CS, math, stats, ML via Google Hangout. Questions were about intro-level undergrad class material
4) Team matching interviews
