I was interviewed (and later hired) from an HR event called Fantastic Friday. I was invited after a small phone interview with a recruiter, who had seen my resume several times (e.g., recommendations from teacher, applications to AECOM jobs). At the event, I met various people within my office that I may work with. The next day you were asked back for an interview. I was interviewed by a group of three people. Questions ranged from very technical /scientific (e.g., studies at school) to more personal (e.g., leadership skills). I am under the assumption that this type of HR event / interview process is/was rare for AECOM. No one in my group was hired like this past me.