Apart from questions about the past work the main focus in the interviews was about how to solve different bussiness problems with machine learning. I recommend to spend enough time on searching the information about the problems which Booking.com solves using machine learning during a preparation to an interview.
Describe the time when you let go of a short time goal for a long time goal.
Describe a time when you stood up for an idea/opinion you believed in?
Situation where you had a disagreement with a colleague/boss? Situation where you had to take a risk where the end result was success/failure?
The interview questions were some behavioral ones, then some fundamental questions about machine learning concepts and definition of different algorithms, how to select one method over another one considering the data. The next phase was coding interview with two questions, some tricky questions also asked.
Text methods (latent, etc), he asked if I knew anything about these.
Asked about Ito's formula as stochastic calculus is on the resume, although it's totally unrelated to the job.
Describe a time when you were committed to a job or project but had to quit.
Lots of behavioral questions, e.g., tell me about a time that you had to combined knowledge from two different areas. Technical questions included discussion on thesis topic and a design question: how to design an algorithm to effectively operate a robot in a warehouse setting.
A few questions on algorithmic complexity
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