After applying online, I received an email from HR who wanted to schedule a "brief" phone interview. I sent back my availability and was told that I would be contacted by another employee in the company.

The phone interview went poorly. The interviewer was soft-spoken, had a heavy accent, and was difficult to understand in general. This brief interview was also unlike any previous brief phone interview I have had, as the interviewer gave me a full, in-depth technical interview which lasted over an hour in duration. Having not prepared for this, the interview ended with me able to answer only around half of the questions adequately.

A few days later, I received an email from my initial contact that they would not be pursuing me for the position.

There were several basic design and OOP questions, as well as more advanced ones that asked to write a function and specifically describe it to me, syntax and all.