- Receive and handle customer complaints via direct contact, phone, email, and social media; report and follow up promptly for resolution. - Coordinate with relevant departments to resolve customer issues and collect feedback after resolution. - Conduct Service Mind training for new Brand staff; update training materials and develop new service training courses and documents. - Manage Brand staff status and related data. - Monitor service quality across customer contact points, including Cashier, Information Desk, Service Lounge, Kid's Lounge, AvenueL Lounge, and other service areas. - Conduct daily checks on Brand staff's appearance, performance, and hygiene, and provide guidance for improvement. - Prepare reports and service campaigns as required by the Customer Service Manager. [Requirements] Working schedule: 5 days per week, working on a rotating shift basis: Shift 1 (08:30–17:30) Shift 2 (14:00–22:00) Shift 3 (11:00–19:00) - Bachelor's Degree. - Minimum 1 year of experience in Customer Service, Retail, Hospitality, Airline, or related fields. Internship experience is accepted. - English: Intermediate level or above (Required); Korean is a plus. - Strong customer service and service mindset. - Good complaint handling and training skills.