Pros
Samsung is famous. You may have a chance to get free Android devices. Although their base salary is relatively low comparing to the main stream American companies, their compensation is not bad and their base salary is still higher than many Asian companies, such as Foxconn, Huawei, Supermicro, or ASUS etc.
Cons
The base salary is relatively low. The management and company culture are notorious bad. They exploit employee to contribute patent to company. It counts into your half-year assessment which is the reference for your bonus. As I have mentioned, their base salary is low, but their bonus may not be bad. Their the manager controls substantial portion of your yearly income, and that will serve a great leverage for the manager to exploit the employee. Another thing is that their company IT is notoriously poor. For example, my current American company outsources the IT architecture to professional IT service vendor (such as Citrix). When you got some trouble on your PC, all you need to do is to make a phone call to the help desk, and you quickly get a professional IT service to fix your computer. Nonetheless, in Samsung, fixing your own PC is a part of your skill in your work. You have to fix your own PC or you will be treated incompetence. The group which I worked for in Samsung does have a Korean IT guy. However, he acted like your boss. You have to beg him to fix your PC or your may have to wait for a long time, and you may not finish your job because of that. Your manager won't listen to your "excuse" saying that you could not finish your work on time because your PC has some issue. blah blah blah ...