One of my favorite experiences was working to launch a new security feature (two-step verification) one week after joining the company. We assembled a great team and went from idea to designs to launch in five weeks across all of our desktop and mobile apps, our website, and our developer APIs. It was really gratifying to see how much a small team could do really quickly.
I also need to prepare a list of such examples where I worked on a product feature. It could be creating a feature or enhancing it. May be prepare examples of both. Framework would be: How to go from Idea > Design > Launch.
Also, some knowledge of APIs would come handy.