A Data Protection Officer (DPO) is the privacy expert in your company that helps you solve GDPR- and privacy-related issues. They will notify you if you are in breach of the GDPR, as well as provide guidance to steer you towards compliance.
DPOs provide education and promote responsible data handling practices. They will also help you make contingency plans in case of a breach, and aid you in international data transfers. A DPO must act independently, without being influenced by owners or other employees.