I applied through a recruiter. The process took 1 week. I interviewed at Bullhorn (Boston, MA) in Apr 2014
Interview
the interview process started with an assessment test taken at home and then followed up by a phone interview and then an in person assessment test taken at the office and an interview at the office followed by a tour of the office and an offer the next day
I applied through an employee referral. The process took 1+ week. I interviewed at Bullhorn (London, England) in Oct 2012
Interview
Had an aptitude test which was in depth, had to take twice, once remotely and once on site, followed by two interviews, one from the Sales Director and one from a senior sales rep.