I applied online. Got a call with their head recruiter same day or day after but it was very quick. After that was a hackerrank with 6 problems and 1 multiple choice. The problems were not that difficult if you're pretty familiar with the STL, but you do have to move pretty quickly. I think I was allowed 90 minutes and I used almost all of it. Second round was with one of the developers on the team. Again, the problem here was not difficult. I had to fix a memory leak and a list of objects being sorted in the wrong order. They're also looking for if you can tell why the memory leak occurred. I was able to fix the code but couldn't give exact reasons as to why the leak occurred so I think I got dinged here and didn't get to move on to the next stage.