account executive

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A person, as in an advertising or a public relations firm, who manages clients' accounts.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun business An executive in an advertising agency, or public relations firm who manages a client's account.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun someone in charge of a client's account for an advertising agency or brokerage or other service business