The interview process was very quick and smooth.

I applied through a reference and was contacted by email. They asked me to take a coding test through HackerRank.

After a week, I was contacted by a recruiter, and we scheduled a Skype interview. After three days, they wanted me to schedule a phone interview with an engineer from Booking.com. The phone interview was very easy, and I solved both problems. Right after the phone interview, the recruiter contacted me to say I had passed and they wanted me in Amsterdam for a face-to-face interview.

Onsite Interview:

1. Technical Interview (Algorithm): The interviewer asked two questions:

   • Given the check-in and check-out times of visitors, find the peak occupancy moment of the hotel.
   • Given a customer's geo-location, find the k-closest hotels to the customer.

2. Technical Interview (System Design): Design a real-time monitoring service. Every time a user makes a request, an event is generated containing some information.

3. Commercial Awareness Interview: There were many questions about A/B testing, as well as behavioral questions common to most companies.