Pros
High work standards, respect for people, work like balance and benefits package. There are also a lot of training opportunities and, if you're smart enough to learn who to connect with, plenty of opportunities for growth. At Amex you have the chance to work with top notch professionals and all sorts of experts, thus learning from the best. Teamwork is a guiding principle and you can always count on people to help you out. If you prove yourself capable and trustworthy you receive lots of autonomy to do your job. Amex is quick to recognize a job well done (sometimes too quick!).
Cons
Base pay at Amex is really poor and the internal mechanisms to assess equity are outdated and way too slow. Having good benefits is just one thing that makes a great place to work great. Amex's compensation philosophy is to pay below the market and compensate with benefits. But to be truly effective the benefits package lacks flexibility (childcare allowances are only useful if you have a child). Therefore, the company should update it's salary position, become more competitive as far as base pay goes, and re think its benefits package to make it more suitable to different employee populations.