Initially I would prefer to start small and then as I grow in ranks/designations I would jump to medium companies.
In 10 years, I would like to be in an established company at a respected role with challenging responsibilities, preferably managerial role and service delivery/product management responsibilities.
In 20 years, I would like to be on the board of executives of a global MNC.
It's all a plan, but life doesn't always support such long term plans. So it's important to reassess your 1, 3 & 5 years goals every year. Being dynamic and consistent is the key to success.
Let's hope we enjoy the journey of life. Cheers.