Relaxed, friendly and informal. We discussed prior experience and projects, along with how to approach various scenarios that would likely come up in the work. Also covered the key team-members and clients I'd need to build relationships with. The chat had a good balance between finding out about my skills, background and career to-date, and the type of person who would succeed in the role. I was given ample opportunity to ask questions about the role and the interview put me as ease throughout our chat.