This is the first question they ask you and they expect you to give a full description of you as a person and give them a complete walk through your professional experience. Be precise, tell anecdotes, be charismatic and confident. Overall, it was a great interview. Not corporate-serious at all. It was a friendly environment and the interview in more like a conversation. Of course, you know they're analyzing the way you talk, what you say, your body language... but in a relax kind of way. Offices are beautiful, it looks like a corworking space. Loved it!