I applied online. The process took 3 weeks. I interviewed at Ecolab (Naperville, IL) in Jan 2015
Interview
The interview day was long, lasted from 8:00-3:30. I gave an hour presentation on previous work, and then had 30 minute interviews with about 8 people. The individual interviews were fairly informal, nothing too technical.
Interview questions [1]
Question 1
tell us a time at your old job where you faced a particularly large obstacle or challenge , and how did you overcome it?
