I was contacted by a recruiter who was very friendly throughout the process. They conducted an initial phone call where they provided information about the company, and I was asked to answer some basic professional questions.

It was interesting that I wasn't being interviewed for a specific position, but for a general programming role, with the aim to find a project that suits me.

After the phone screen with the recruiter, a phone call was set up with a developer.

Finding the next node in a binary tree