I applied through college or university. The process took 1 week. I interviewed at WSP (Chicago, IL) in Mar 2016
Interview
I interviewed on campus, and then was invited to their offices, where I did a multi-part interview, which included a writing assessment, basic Excel, behavioral, and case question. All of these assignments were about engineering projects, but an engineering background was not necessary to answer the questions. Lunch was provided.
I applied through an employee referral. The process took 2 weeks. I interviewed at WSP (Washington, DC) in Apr 2015
Interview
One full day of work divided in four parts: writing, Excel, presenting, case interview. Multiple candidates on the same day but each take turns so you don't have to be all in the same room at once. They day ends with a networking lunch but is hard to prepare since there is no information on who will be there ahead of time.