The interview process was divided into 3 parts:
1) an online test,
2) a video conference and
3) a face-to-face test/interview
The online test was a question about lexicographic sorting.
The video conference was a quick discussion about the solution of the online test and some free conversation about software engineering challenges.
The face-to-face test was a mix of math and computer graphics questions followed by some free conversation about software engineering challenges.