Client Facing

A consumer-relation technique developed in England in the early 19th century that involved the then-revolutionary tactic of looking at a client during a transaction, as opposed to the so-called "German Model" popular at the time, which involved a salesman shouting over his shoulder at the customer.

Eh, okay. The term "client facing" can quite literally mean "facing a client," though client-facing tasks also include more metaphoric applications of the phrase, like, say, talking to customers on the phone. It describes the employees of a company that interact directly with customers. A receptionist would represent a client-facing role. A person on an assembly line typically would not.