Four rounds as everyone else on Glassdoor has described.
Round 1 - Initial introduction through a recruiter.
Round 2 - Behavioral interview with same recruiter.
Round 3 - Interview with two hiring managers.
Round 4 - In-person interview with presentation.
While I enjoyed my recruiter I found the two hiring managers very awkward. There were awkward pauses in between questions and answers that I would give; they seemed unfriendly, which was off putting since the role has to do with account management; they did not seem to understand my current role, which I feel is important in order to tailor appropriate questions for the TCM role interview. When I asked about what they liked most and least about their jobs/Gartner, they both gave the same answer. One would give an answer and the other would say, “Yeah same thing.” Needless to say, I was left unimpressed so the rose colored glasses quickly came off. My recruiter would gave me positive feedback that my answers were very concise and provided great detail and a good story, which she said was important. However, the hiring managers said that I needed to work on my STAR interview... So I got two different opinions, which is always interesting. I think it shows how subjective an interview can truly be.
Additionally, the other feedback on Glassdoor about the campus being full of 20-something's is spot on. It is a sea of 20-something's where someone in their 30's can be put off if they are not living that 20-something lifestyle. I also heard this feedback from a Gartner employee not in Fort Myers, but at another location, who has visited the campus. Although most companies see that they are the ones doing the interview, the candidates are also interviewing the company. It did not feel like the upper level management realized this process is a two-way street.