The process was a recruiter screen and a 90-minute HackerRank online assessment with four problems. One was easy, and the other three were medium to hard. I completed it almost completely, except for one question where I ran out of time to optimise for some larger test cases.

That question in particular required niche math knowledge that was irrelevant to the position I applied for, which was pretty lame. I thought I did well enough to go to the next round, but apparently, I didn't. I would guess most people would need to cheat to get a perfect score.

There were LeetCode-style questions of varying difficulty.