If you've already hired talent without this experience, then you'll either need to carefully craft an opportunity for them to fail or wait for them to do so all on their own. The latter is, for me, intolerable, and I would rather provide the proudest among them vague architectural tasks that pit their design sense against that of their coworkers. Being in charge of a design that's perpetually torn apart by your fellow implementors is good practice, and it may even reduce the total hubris of the group.
or, sometimes in the case of cocky interns, I let give them enough rope to hang themselves. Cockiness at a younger age is just unrefined ambition.
But an arrogant 30 year old that's been in the game for 5 years? Don't let the door hit your ass on the way out.