I applied one of reserach scientist internship at Meta, but it did not move forward at first time. But after a few months, HR told me to have an interview for that position. It was something weird. I took two interviews, one is for research background, and the other for live coding test. Research background interview went well in my opinion, but I could not complete the coding even though I explained all detailed algorithm for given problem. The interviewer always ask me a time complexity for the algorithms.

There was 1 research and 1 coding interview. The research interview consisted of 2 parts: in the first part, they asked questions about my publications, while the second part was a brainstorming session about a research problem.