I applied through an employee referral. The process took 2 months. I interviewed at Ecolab (Norman, OK) in Aug 2012
Interview
I had two interviews the first interview was over the phone that lasted aprox. 45 min. The recuriter just asked me about myself we went over some classes I had taken and then we went over my resume. This part of the interview had no tough questions it was very laid back and he was really nice. the second interview I met with 4 employees that I maybe working with in the future. It lasted around 4 hours between the meeting and going to the job site the first part of the face to face interview we went over the same things we discussed in over the phone then they asked me some technical questions that were not hard at all. After that part we went to the paper plant and they showed me something of things I might be doing.
The interview was pretty simple. I interviewed 3 times before the offer was sent. It is usually a recruiter, a direct manager, and a high level manager. There is sometimes a ride along portion so you can see what the day-to-day looks like.
Standard interview process. Two rounds of interview. First was HR screening phone interview, followed by in person interview with hiring manager and other employees. Job offer was within two weeks.
I applied through university. The process took 1 week. I interviewed at Ecolab (Baton Rouge, LA) in Mar 2018
Interview
I met one manager in the campus career fair, he invited me for a dinner with the other recruiters and students, and an interview in the next morning. The interview was mostly behavioral questions. They were super nice!