A Freebase developer works with Freebase, a large collaborative knowledge base consisting of metadata composed mainly by its community members. They use the Freebase API to access this database and integrate it into various applications. Their tasks include creating, reading, updating, and deleting data, ensuring data accuracy, and improving its accessibility. They also handle issues like data redundancy and maintain the system’s overall performance. Additionally, they may develop new features and tools to enhance the usability of Freebase. Their ultimate goal is to provide reliable and structured information for users, applications, and services. Their work contributes to semantic web development.