Submitted application through referral. Got invited to a call with a recruiter. This wasn't an interview, they just provided me with information about that the interview process would involve, which I really appreciated. First stage call, talking through some of my background and knowledge of Object Oriented Programming. Second round, technical interview, designing a program by drawing it in UML. Final stage consisted of 3 calls. A competency based interview, a demonstration of their tech and a final technical/competency round with a senior manager talking through a project I worked on.