I applied online and received an email about two weeks later with an invitation for a pre-screening programming aptitude test through HackerRank.

The problem was to parse a binary file containing trade information exchanges and extract various information from it.

It was pretty easy but somewhat time-consuming. I was given 72 hours to complete the task and it probably took me about 5 hours total, including testing.

They emphasized that the code should compile and run on Linux.

I received an invitation for a phone screen a week later.

The phone screen lasted about 45 minutes and was mostly a conceptual discussion about C++, with a special focus on C++11.

HR set up a codepair on HackerRank, but the interviewer did not want to use it, so there was no coding involved.

The conversation was a bit awkward, but otherwise fair.

I received a timely email two days later stating that they would not continue my candidacy.

Overall, the process was fair, and the rejection notice was reasonably timely.

Describe the difference between mutex and atomic.

Describe a smart pointer. What is the size of a smart pointer?