I applied through an employee referral. The process took 3 months. I interviewed at MANTECH (Charleston, SC) in Apr 2012
Interview
If you know someone you're good to go, if not good luck
Application
I applied through a recruiter. The process took 1+ week. I interviewed at MANTECH in June 2015
Interview
Online hiring through the company website after screening a recruiter gets in touch with you. If you pass the phone call interview they then schedule a flight for you to go to in-processing.