I applied through an employee referral. The process took 3 weeks. I interviewed at Gartner (London, England) in Nov 2018
Interview
First stage was a phone interview wit an HR person. I was given all the information on the role and the company. Second phone interview was about my experience and future career plans. Third interview was 8n thrir offices with an HR person and team leader
They have reached out to me for a job every year and I have interviewed with them 2 times and have never made it past the 1st interview. Confused why a recruiter reaches out to me anymore?
It was long and rigorous, often feeling extremely high pressure, with not a lot of constructive criticism. There are 5 rounds and each with a role-play. It's safe to say this is not an easy interview process. I'm not sure how they do their prospecting, but I was apparently a 'great fit' for the role - didn't show that enthusiasm during our calls.
Intensive - multiple rounds led by a recruiter. Expect 2 rounds of role play, around 4 rounds total. 2 with a recruiter, one with a lead skills expert and another panel with VPs and hiring managers.