Tellers are often the first point of contact for customers entering the bank. They may also be known as cashiers or customer representatives.Tellers typically have a high school diploma and some experience with handling cash and interacting with consumers. They can often advance into senior teller positions and then into other banking services Tellers typically have a high school diploma and some experience with handling cash and interacting with consumers. They can often advance into senior teller positions and then into other banking services.Tellers verify a customer's identity and financial information before processing a transaction. Tellers process routine transactions, such as cashing checks and depositing money, at a bank or credit union.