First, I had a 30-minute screening call with the head of tech HR. Very pleasant and friendly. I was then invited to a technical discussion with the VP of Engineering. Again, very friendly chap. The discussion was mostly around object-oriented design, SOLID, etc. Then, I was handed a take-home coding project, with the goal of showing my OOP skills. As a final interview, I was invited to discuss my code and receive constructive feedback. All three of my technical reviewers were very nice people.