Pros
Mastercard is a very wealthy company, which means that it is very hard to get fired. It has good benefits for those looking for a quiet life. And it's definitely possible to have a good work life balance. Nice office location (although often short on desks)
Cons
The downside of the company's wealth, is high levels of complacency, and reward for playing politics, keeping your head down rather than delivering value. Despite outward PR on diversity, there is an astounding lack of gender diversity in senior roles, openly condescending tones taken when speaking to females in some parts of the business, and moaning about women being hired ahead of men (despite in many areas the senior leadership teams being 90% male). Whilst there are some very clever individuals in this business with deep knowledge of payments, because the company is so insular there is little understanding of the world outside, and people are shuffled around internally with no consideration as to whether they have the skills for the role they are moved to, which results in a lot of inefficiency and inability to deliver high quality products in a world that is changing.