Pros
Great place to work in general - I was given plenty of freedom. The benefits are very good. The opportunities are there - all over the planet. Young people should not be discouraged - you will be in demand and appreciated.
Cons
So large you are destined to be a small fish in an enormous ocean. Organization is ridiculously top heavy - vice presidents everywhere. Because of cutbacks that are currently quite a lot of people who are overextended and quite frankly there is no way that all the work can possibly be accomplished with such a lean staff. But hey, if you are politically saavy you can succeed in AECOM. Just watch out - once you hit a certain age - and salary level - your job will become expendable especially if you are overhead. Your best bet is to find a job chargeable position if you are not a politician. I worked at AECOM for 16 years and I watched year after year as older employees were let go time after time. Surprise! my number came up as well. One serious word of caution: don't think you will succeed here by merely good performance. I was given a glowing review and a raise only two months prior to being let go.