I applied through a recruiter. The process took 5 weeks. I interviewed at Booking.com (Amsterdam) in Jan 2019
Interview
Het leek alsof ze iemand met vooral OO kennis zochten. Na het maken van super simpele SQL vragen, kreeg ik per e-mail een uitnodiging voor een interview met een engineer en het boek "cracking the coding interview" doorgestuurd. Maar uiteindelijk bij het laatste gesprek, het technisch interview, bleek het een 100% map/reduce-functie te zijn, waar je live in scala moest typen en vanuit een streaming dataset aggregaten moest maken.
Interview questions [1]
Question 1
Suppose I have records like this:
("a-b", "data1", 1)
("a-c", "data2", 1)
("a-b", "data3", 1)
How can I group and sum, such that I have the following results when the input is a DataStream?
("a-b", ["data1", "data3"], 2)
("a-c", ["data2"], 1)
First there was coding challenge with 1 hour time which you do on your own, Then screening call in which you are asked general questions about your background and experience, then technical interview, then system design, and ultimately cultural fit.
Interview questions [1]
Question 1
The technical interview is Python only. In general not hard. First part is some Python coding with three sections. There is a second part which also has 3 parts but its about data aggregation and computing insight
Remote test, call with hr, followed by live coding session with fellow engineers, didn't make it further but good luck with the steps. Questions were not hard, I stressed too much
I applied online. I interviewed at Booking.com (Amsterdam)
Interview
The first screening round consists of SQL and Python coding tasks. If you clear this screening round, you will be invited to the second round, which is an HR introduction call. During this call, the HR representative will discuss your motivation and assess your skills.
The third round is a live core Python coding session, where three data engineers will evaluate your Python programming abilities. The coding problem will be related to a booking platform, involving trip analysis queries that need to be implemented in Python.
The fourth round focuses on system design, and the fifth and final round is a behavioral interview.
Interview questions [1]
Question 1
why do you want to join booking.com?
Python coding questions related to trip analysis