The first stage consists of four HackerRank questions. You have about 90 minutes to answer them all, and you could say the level is medium (compared to other HackerRank questions).

If you answer them well enough to move on to the next phase (which is the final phase), they will send you an email with everything you need to know. In short: you will be on a video call for about five hours and you will have a group test and another programming test with one of the engineers.

The group test consists of how you would implement some new feature the company wants to add, and they let you make diagrams through the website used for the video call. In general, this part is not very complicated; it's about sharing all your ideas and collaborating with the others.

The programming part is pretty good: the guy who was with me was super friendly and started with a not-very-complicated problem. After finishing that problem, he gave me one of medium difficulty and another one a little bit more complicated.

For anyone preparing for it, I would recommend doing easy and medium difficulty exercises on LeetCode. Also, be comfortable with Dynamic Programming because the last question they asked me was super easy if you know how to approach the problem.

The first question had to do with Strings and you had to say whether the input String met one condition or another. For the second and third, I recommend looking at the most frequent easy/medium difficulty problems on LeetCode.