Applied online. After 6 months (I had already started working at another place) I received a phone call expressing interest. After 2 more phone calls, I was invited to interview on-site. The on-site interview was at the corporate headquarters, and required giving a presentation on a past experience and 1:1 interviews with 3 people. After that, I had a phone interview with the actual job site and had to do an on-site 1:1 interview there with 5 different people.