An assistant buyer supports the buyer and coordinates purchasing and service orders to maintain supplies of products, food, equipment, and other materials. Depending on the industry, your responsibilities may include establishing accounts with outside vendors, negotiating price and scheduling, and maintaining detailed documentation of all purchases. Assistant buyers research and secure products and services to sustain smooth daily operations, so communicating with teams and supporting departments, as well as outside vendors and suppliers, is crucial. Coordinating deliveries and tracking inventory are common duties for assistant buyers.