3rd and Final Round of Interview: Advice

Hey all, I’ve just gone through 2 rounds of interviews for a UX role at a consultancy. The first round was a phone interview, 2nd round was an in person challenge presentation, and these were done with the Head of Design at this consultancy. The last round is a 30 min “casual chat” with the Head of UX at the consultancy’s client that I would potentially stationed at for my first project and would be working with. So it’s not with the consultancy people.

What would I expect at this interview? Even though they’ve said its a casual chat, it usually never is ‘casual’ so I don’t want to treat it as such too much. Is 30 mins even enough? Anyone been in this situation?

Any pointers would be great.

I forgot to mention, only I and another candidate have moved onto this round.