The job of an Apartment Building Manager, often referred to as a 'SUPER', is to oversee the day-to-day operations of an apartment building. This includes managing tenants, collecting rent, maintaining the building, and ensuring that all safety regulations are followed. The SUPER is also responsible for resolving any disputes between tenants and responding to maintenance requests. They must be organized, have excellent communication skills, and be able to handle difficult situations with tact and diplomacy.