A director of customer service works to support company goals by building strong, lasting relationships with customers and employees. Customer service is important in many aspects of a business, from operations to strategy and planning to sales, so the director of customer service has a vital role in the success of their company. In this role, you may be in charge of a specific department or team, or you may have responsibilities throughout the company. In either case, your job duties entail helping to build a relationship with a customer to keep them coming back.