Pros
A lot of the people are great as individuals. Time off is above average and depending on role you can work from home sometimes... these are the only positives. If you're looking at a sales role and only want it for a few years, maybe this place will work for you. For any other role, stay away.
Cons
Gartner used to be a great company to work for, but has not been for several years. - In Sales, the metrics are unachievable after a few years. They are merciless if your book of business get a cut. That said, the Sales organization does run the company. More detail further down. - In Research, they will work you to death. They are bleeding talented analysts (their entire value proposition) left and right yet nobody seems to care that this massively reduces the value of their offerings. - The service groups have metrics that are effectively at odds with both Sales and Research so everything they try to do is a fight on both sides. And their metrics are unachievable. - On the business ops side of the house they're stuck trying to bend Product designs to meet Sales promises that don't fit, and also to make falling numbers sound good to investors. - HR is a complete disaster and has the impossible task of trying to replace the assets they're losing. Multiple reviews on here also reference them adding fake Glassdoor reviews... believe it. It's absolutely happening. The value of the actual product offerings is being diluted by all of the above and clients are noticing. The Sales organization runs this company. Upper management's myopic focus on double digit growth gives all the power to the Sales department, even when their behavior is bad business and bordering on unethical. There are multiple full business units charged with enabling this behavior, selling clients based on interactions which are not within the actual product structure. The salespeople who do these things are then promoted because the problematic sales result in them meeting their metrics, and the cycle continues. So, if you want a short-term high-paying job in a Sales department which runs a company, by all means apply. They're the only group who are happy, but even that role has its share of stress. In other areas, salaries are below average, healthcare is mediocre, and general morale is below sea level across departments. In years past this company was great, optimistic, had good middle management, and upper management set goals which were reasonable and achievable. An unscalable product model, combined with years of promotions in every business unit based on either cronyism or meeting sales metrics, not based on ability or business IQ, have thrown that all away. The general morale now is defeatist, infighting between business units is rampant, and management is either oblivious or pretends everything is fine. Either scenario is bad. When legitimate concerns are raised they are either dismissed or nominally "recognized" and then ignored. Avoid this place; the recent significant stock drop is a harbinger of things to come unless substantial cultural changes are made. If you read back a few years, the general trend of Glassdoor reviews across business units is downward.