Domain Driven Design efforts in dynamic languages?

No, I'm not, but the principles remain the same so there shouldn't be any reasons why it wouldn't work out just as well, especially if the dynamic language in question has a good OO support (e.g. Ruby).

Even better perhaps, since your domain model could more easily make use of e.g. traits/mixins, and concepts from DCI, etc. if there's a fit.

Recently I tried to collect all known sources related to DDD in dynamic languages. I was end up with this guthub repo.

For reference here some code examples:

1) Ruby DDD Sample App

2) DDD in Django example

3) Kanban board in Python with DDD approach