I applied through university. The process took 4 months. I interviewed at CDM Smith in Nov 2016
Interview
Was flown out and provided hotel. Had interview early the next morning where I spoke with 5 different employees ranging from entry level engineers to senior managers. Interviews went very well, several times mentioned 'when I start working there'. Was told I would hear back within the next month but did not hear hear back for another 3 months after my interview even though I sent multiple emails checking the status of the job.
The process was smooth. I had a phone interview followed by an in-person interview with 4 managers. The whole process took a couple weeks but was smooth. No bad experience.