It was pretty brief. I was asked to discuss my experience with the tech stack listed on the job listing. I was shown some of the company's code and had to explain to the best of my ability what it did. I also had to explain to the best of my ability how I would solve an issue with code for the company. There was no real code challenge though.

Phone interview, asked questions about experience with certain technologies, details about technologies. Second interview, practical coding interview, look at some methods, explain them. Talk about how you would improve a method or change one to accomplish a specified task.