A banking officer has the legal capacity to act for a bank, make agreements, and sign documents on the bank’s behalf. The duties of a banking officer are usually carried out by a branch manager, loan officer, or another staff member in a supervisory role. The qualifications for a job as a banking officer vary. At a smaller bank, you may be able to start as a teller and work your way up after gaining valuable skills and experience. To pursue a career at a larger bank, you typically need a bachelor’s degree in a related field, such as finance, economics, or law.