Pros
The company has a very high turnover of staff due to the condition which I will expand on in the cons section. Due to this you are given more responsibilities thus learning more about calculations, project management and budgets than at an other company.
Cons
Upper management love to shout about the merger but the majority of staff on the "shop floor" know what an unmitigated disaster it has been. Aecom now is a far to big to function properly. There's a them and us attitude between Aecom and formerly URS staff. The staff retention for experienced engineers is low. Staff are expected to work long hours and travel in there own time for business. Upper management need to actually listen to the yearly staff survey and implement the information that they have been given. Salaries are low in comparison to other similar companies, the benefits and pension are poor. The majority of reviews on here with five stars have been written by somebody employed by Aecom to get the star ratings up. I find this the most telling thing about the company.