We’ve also started to implement this with a new task dependencies feature in the latest release. Check out: https://www.hashicorp.com/resources/preview-of-nomad-0-11-ta...

https://learn.hashicorp.com/nomad/task-deps/interjob

There’s more work going on there to further improve the feature in upcoming releases.

Disclaimer: I’m an engineer on the Nomad team.