the definition of impressive resume depends on the purpose you want to achieve. There is not such a thing as THE impressive resume.

If you are looking for a certain job, you don't want a resume with a bunch of empty titles. You need a strong resume addressing the specific requirements of that particular job, in terms of skills and relevant experience.

Large organizations need both people that take care of the "ordinary business" and people that take care of "special projects", that are the doers, that figure things out by themselves: your startup experience automatically qualifies you for all the activities that require this second type of people.