The process took 4 weeks. I interviewed at Invesco (Houston, TX) in Feb 2010
Interview
Got interview through school web site, was selected and spoke to HR at the school, after which were total 2 interviews. Phone interview was behavioural, Group interview was also more behavioural, spoke about my resume, prior work experience
I applied in-person. The process took 1 day. I interviewed at Invesco (London, England) in Jan 2016
Interview
Asked a series of typlical questions that one would normally get at an interview so there were no real surprises. I answered as expected under the circumstances. Went as well as can be expected.