The interview process was fairly standard:

1. Online assessment.
2. Recruiter call.

If the recruiter sees you fit for the role, then you move to the onsite interview.

Onsite:

1. Coding interview.
2. System design interview.
3. Cultural fit interview.

1. OA There was an implementation already provided in the project. I had to implement 3 new APIs and also add unit tests for them. If existing unit tests were breaking, I had to fix them as well.

2. Recruiter Call Interested in knowing what you have worked on, your experience, and your motivation to join Booking.com's Amsterdam office.

Onsite

1. Coding Round: Simple BFS question.
2. System Design Round: In-depth understanding of system design core concepts and scaling your existing system to Booking.com's scale.