Imperial interviews using a behavioral question process. This means primarily questions with the format:
Describe a time when X happened to you?
What actions did you take (lets call them Y) when X happened?
What were the results of you doing Y?
They like your answers in the StAR's format: Situation, Action, Result.
The interview process typically follows:
Resume screening - Up to 30 candidates whittled down to between 5-10
Initial Interview - Candidates receive a screening interview with someone not necessarily related to the job they are applying for, this interview is simply to check if you are a good 'company fit'
2nd round interview - Between 2 and 5 candidates are interviewed before final selection. You will travel to the corporate offices and partake in 3 separate interviews with people you will work with if you are selected.