[intellectronica]

Yes, sometimes, but you need to have a good sense for what is actually impressive to the people reviewing you, not just impress yourself (and you are the easiest person to impress).

Merely the fact that you put in the time to build something isn't going to be that impressive for someone considering you for a senior role. They'll want to know that your work was valuable to others, that it had impact. So if you just built something for fun or as an exercise, I don't think it's worth showing it. But if you wrote or contributed to a popular open-source project, or built something that is used by a large number of people, or you got published somewhere respectable, or you were successful in achieving some impressive goal like helping a community you care about, do share.

Make sure to explain how your work was impactful with numbers, quotes, use-cases, etc...