Pros
Pay is good for a nonprofit, the reputation (deserved or not) looks good on your resume, and the people who are not in management positions tend to be very bright, friendly, passionate and hardworking.
Cons
Leadership is completely lacking, and individuals at a Director or VP level shun decision making. This would be ok if the rest of the organization was allowed to work to its true productivity, but alas, Save the Children managers tend to focus much more on keeping their positions and stifling creative ideas (a culture of "business as usual") than on employee development. It's too bad, because the number of excellent people coming into the organization is phenomenal, and they tend to leave within a year or less. Unless you plan to be field based, this is not a place where you will grow professionally. Save the Children needs to figure out a way to work within its mission. It is becoming impossible to see the difference between Save the Children, Mercy Corps and CARE. The concentration on rampant fundraising (especially with US Government money) instead of on what people really want and need (supposedly the backbone of development and humanitarian work) is beyond disheartening. Save the Children will chase any money that is tossed before it. Lastly, the finance department is a mess and it makes the working lives of anyone who has to depend at some point on finance for clear policies or guidance very difficult.