I worked at Omnicom full-time (More than 8 years)
Good opportunity for advancement
Commuting to NYC can sometimes be very tedious
I applied through a recruiter. The process took 1 day. I interviewed at Omnicom (New York, NY) in October 2016.
I met with 3/4 people on the team then two of the hiring managers. It lasted about an hour and a half. They walked through my resume and asked basic interview questions.