Pros
AECOM has a large presence globally and has many offices to allow transfers if you're interested. Large workforce can allow an employee to meet many professionals and an opportunity to learn.
Cons
IT support has been farmed out and very clunky. Slow to react and difficult to get help. Legal department seems to impose restrictions to protect company on proposals but this often disqualifies the submission. Publicly traded company so very bottom line driven and seems like there is no budget to send employees for training or conferences. Office consolidation due to many recent company acquisitions have given some offices uncertainties. Purchasing software or hardware is horrendous. Specialty software can take months and months to acquire. Deliver to Win program is an incentive to give a bonus to management who deliver a project under budget and on schedule. However it only pays upper managers and not the staff who actually do the heavy lifting. It is nicknamed Deliver to One.