I applied through an employee referral. The process took 2 months. I interviewed at Bentley Systems (Exton, PA) in Nov 2011
Interview
It was more like an easy going conversation with 3 separate managers. A formality at most as I was referred by a friend who was an employee of the company. I am not sure if it would be the same for someone just applying without the referral of another Bentley Systems employee.