I applied through other source. The process took 3 weeks. I interviewed at ERM (Houston, TX) in Nov 2013
Interview
The interview process was a good half day affair. You will meet with 5-6 people in a cubby/conference room, 1 or 2 which will be partners. They will arrange for you to have lunch with a couple of employees in the division in which you are interviewing for. All plan, hotel, and transportation are made and expensed by the company. Very non-stressful.