Not that it applies to this post, but even though most of the projects I work on don't have nodejs on the server, the dev machine is running nodejs for build management. I probably wouldn't ask for a nodejs developer just to run grunt/gulp but I do like for all my front-end devs to play with nodejs so they at least know how their tools work a bit. After all, I wouldn't really want someone who spends their days writing javascript for the browser but isn't interested in using nodejs to customize their cli tools, at least.
