First, you have a HackerRank, but it's not really the LeetCode type. You have two days to submit it.

Then, an HR interview, which is a big filter, so you need to prepare for it.

Next, there was a technical interview going over the HackerRank and talking a bit about system design and fundamentals.

Finally, there was the "superday" with:

• 1 hour on CS/math fundamentals (again, not LeetCode stuff, more about problem-solving)
• 1 hour on system design (ask LOTS of questions)
• 1 hour of non-technical / project presentation.

You also got to meet the CTO and speak with one of the former interns.

Expect the interviews to be pretty tough, not really for what concerns prior knowledge, but more about being able to think on your feet. They appreciated interest in the company and in the industry.

The process is very long, but I received quick and detailed feedback.

I am not allowed to share specific questions, but know your CS fundamentals.

Don't focus too much on DS&A.