Pros
You work at one place and help huge companies to succeed in their business in many markets. If you were working for one of them you would probably know just one facet of the diamond. The satisfaction you get from working here is many times higher than at any other company. Smart people. Wonderful management. Competitive salary. And it is growing rapidly. Think about it: A company with 100 - 200 employees drives about 20 - 30% of world's programmatic buy.
Cons
It's not that easy to pass the interview. And it may be even more challenging to survive the first year. Too much information to absorb especially for those not closely familiar with RTB, and too much things to do in parallel until you learn to cope with multiple challenges at the same time.