It was one of the least organized process I have ever take part. A recruiter found me on Github because of my Python contributions and she scheduled an interview with an engineer, she told me the interview would be on backed concepts in Python (no leetcode questions or this kind of things), I haven't received anymore information to prepare to the interview.
But when the interview started, the interviewer wanted to cover a lot of computer science fundamentals I've never saw in an industry interview before (such as Operating Systems - and the team had to do nothing with OS but with web development, and math), if I previously knew the topics of the interview I would have studied them beforehand, but I had no clue (and the team didn't work with Python, but with go by the way). No questions on things that I believe that were more useful for a software development team (such as software architecture or databases) or "general industry" questions (such as Leetcode). I thought it was a terrible experience.