I'm not sure. I think that if you want to be a pure technologist, titles don't mean as much, because anything beyond Sr. Engineer isn't standardized across companies, and if you're good at what you do, that say more than any title history.
If you want to take the management path, you should have some kind of management title by 32 and Director by 36.
If you want to take the management path, you should have some kind of management title by 32 and Director by 36.