Pros
Travel, it can be fun for a while.
Cons
End of the month accounting and your boss's performance incentive bonus rules your life. You get promoted because they can earn more bonus by promoting someone. Likewise, you won't get promoted if it means their bonus will drop. Nothing matters but the reported profits and their bonus. The company is managed on a month to month basis with a long term outlook of about 3 months. They hire, fire, and transfer on a whim. I was transferred from Louisiana to Congo with 2 weeks notice, from Angola to UK with 1 weeks notice, etc, etc. Oh, and forget dual career, it only exists on paper. In reality, they use it to try to strong arm couples into taking horrible location assignments. "Oh you want to go dual career? Excellent, we can make that happen for you. We have a great position for you and your partner in Nigeria." -No thanks, I've been in Africa for a long time and would like to work elsewhere. "I see, well, we are transferring your partner to Nigeria anyway..."