Job Description Help for Job Description. Opens a new window. Barbacks are responsible for assisting the bartenders with daily operation of the bars. Ensures that the assigned outlet is prepared and stocked to meet the daily business demands. Retrieves orders from storeroom. Cuts, slices and peels perishable garnishes and fruits, mixes and pours juices in sufficient amounts according to projected business. Stores back-up supplies needing refrigeration in prescribed containers for later use. Checks and assists bartender in maintaining adequate amounts of supplies, i.e., stir sticks, napkins, etc., for both the immediate bar and extended service area. Maintains cleanliness of bar area, beer lockers, refrigeration and storage areas.