Not to hijack the thread, but anyone knows any book on what a director of engineering does?
Also most of your contribution to the business is ignored if you can't hire.
If Director is the most senior you can be without being that, you're generally the highest execution-focused role that lets your VP do their thing. Somewhat equivalent to an XO in the military. At the same time, you're usually the one who has to translate the relevant parts of the strategy into something relevant and tactical for everyone below.