A Graph Database developer designs, builds, and maintains applications using the graph database. They work with data modeling, query languages like Cypher, and graph algorithms to create efficient, scalable solutions. They can visualize complex data relationships, translate business requirements into database solutions, and optimize database performance. They also ensure data security, integrity, and consistency. They collaborate with other software developers, data scientists, and business analysts to integrate with existing systems and develop new features. Moreover, they must stay updated with the latest features and best practices.