I applied online. The process took 3 months. I interviewed at Google DeepMind (London, England)
Interview
Long-winded with many Hangouts sessions, testing in person. Applied, had response within 1 month, whole process took 2+ months. Went fine until I met with the Programme Managers who were both aloof, disinterested, late to the Hangouts call and rushed me through with an air of disregard.