title whore

Noun referring to a person who holds a title, just for the sake of the prestige that comes with the title, without actually fulfilling the responsibilities that also come with the title.

He's a real title whore.

title-whore

An obsessive and/or manipulative person who intends to climb up the organizational ladder by whatever means necessary.

You could either be backed by your peers or title-whore around to get to the managerial role.