Contacted via LinkedIn by their HR.

Call with HR.

Then an online HackerRank test (approximately 6 questions).

Then a phone interview. The phone interview was originally missed by them (for some reason they were unable to dial internationally, even though the HR department had no trouble). On the rescheduled day, it was 15 minutes late. The interviewer was poor; questions asked were highly specific, and the interviewer was unable to ascertain my level of knowledge on the topics asked, beyond the specific question he was posing. For example, the question on mergesort/quicksort focused solely on complexity and worst-case performance, which I hadn't revised (interview rust). However, he could have asked how they work, and I could have described them. Furthermore, he skipped questions if I didn't answer instantly, couldn't pronounce "Design Pattern" correctly (so over an international line, I couldn't understand what he was asking), and as I said before, wasn't able to elaborate on the questions. For instance, he could have said something like, "Explain what a Factory pattern is," instead of just skipping it. One of the worst interviewers I've ever had.

To this day, I've not even heard from the HR department, which I find rather rude.

Compare mergesort/quicksort.

How would you find the median value from a stream of ints?