Online interview with someone already in the same job role, then in-person interview with the CEO at their London office. Final stage was going to be a presentation but I discontinued at that stage.

Interview was moved twice, and eventually settled on a Thursday at 630pm for half an hour with the CTO. The interviewer joined 10 minutes late, took another call 5 minutes in for a few minutes and then ended up with another 5 minutes of general interview talk.