I was contacted to set up a phone screen within a week of applying. The phone screen consisted of a short conversation, nothing to worry about.

Next I was given a coding challenge to complete on HackerRank. It was similar to the pathing problems others have mentioned.

After they reviewed my code, I was invited to a full 3.5 hour interview the following week. The interview consisted of three sections. The first hour was more coding: two basic questions and a third, much longer one (involving more grids) which you may not complete. There were then a few whiteboard questions with algorithmic analysis and a general discussion of past experience.

The process went smoothly and company representatives were friendly throughout, even when my answers weren't quite as smooth.

Give an example of overcoming technical challenges on a previous project.