Pros
The compensation is strong, with a healthy base salary and bonus/equity structure. The hours are easy, with many people working <40 hours a week. There are pockets of talented people that can get great things done, if you can find them.
Cons
All the signs of a complacent monopoly going extinct are there. Uninspiring and inauthentic senior management more concerned with their golden handcuffs than their people and challenging the status quo. Bad HR policies that stifle talented mid-level employees. Toxic, gossip-filled, silo'ed, and territorial culture that deserves its own Uber-style exposure. Splashy efforts at "innovation," but when's the last time CME made real profit on a new business? Fun tip: look at the tone-deaf propaganda responses from HR on these Glassdoor reviews that politely deny that any problems exist, often with a line like "that's not the environment we recognize!" and a reference to an engagement survey that's taken every two years. For example, they say that their education reimbursement is twice the industry average! Wow! But they fail to mention it used to be 100% covered. People joined specifically for this benefit, before it was ripped away with no warning, causing major life disruptions. To sum up CME as a place to work: it's all talk, little action, and no accountability. Stay away if you're ambitious and want to work with smart, competent people.