Can't say due to an NDA, however make sure you know OOP, for example, you should be able to talk about designing a game like pong. Probably should start from user requirements.

I was told by recruiter in an email that the technical interview would be “60-70%” spent on coding and the rest behavioral. In reality, I was given at most 20 out of the 45 minutes to solve a Leetcode medium. It was a “magic elevator” question. I was supposed to code a few functions that would mimic a complex elevator. Interviewer was not very collaborative and sometimes just silently watched as I asked important questions about the code.