I applied through university. The process took 1 day. I interviewed at OTIS (State College, PA) in Nov 2015
Interview
Just one interview, no technical questions. Just asked your interest and described the job. Talked with Otis employee at the university career fair before. Received the phone interview two months later.
I applied online. The process took 1 week. I interviewed at OTIS (Kansas City, MO) in Nov 2017
Interview
Interview process was informal and light hearted. It has basically a sessions to find out more about you and see if you fit the company. There are some simple questions about past experience, willingness to travel, and if I have any questions about the company.
I applied through an employee referral. I interviewed at OTIS (Farmington, CT) in Jan 2016
Interview
Very thorough, full day of interviews with heads of various groups looking for engineers, each team member asked personal and technical questions pertinent to the type of work required in their group. I interviewed as a mechanical/electrical/software engineer.