I applied through a recruiter. The process took 1 week. I interviewed at Scrub (Chicago, IL) in Dec 2015
Interview
they made me fill documents oniy, after that I had to wait for a long period of time until they told me to wait by the train station located in the airport to gave my exam on the badge office located in the airport "security clearence"
I applied in-person. I interviewed at Scrub (Chicago, IL) in June 2016
Interview
you can go in make sure you have 3 forms of ID, if they all match you can have your interview the same day and if you meet the requirements you get hired the same day.