Frame your answer in terms of how you saved time and money, or how your creativity added to the success.
“Most recent success is a project called “X”. I handled all of the negotiation with the client for our last project. It was a three month long project where we had to work at the client’s warehouse facilities. I was instrumental inĀ translating the client’s needs into a contract. I had to make sure that my team understood what the client expected from us, and thenĀ check the quality to make sure that what we were delivering was ok.”