An ActiveAdmin developer specializes in using the ActiveAdmin framework for Ruby on Rails to create intuitive and efficient administrative interfaces. They design, develop, and manage databases, resources, and back-end functionalities. Their responsibilities include creating custom dashboards, integrating third-party applications, setting up authentication and authorization, and managing data presentation. They also perform testing, debugging, and troubleshooting to ensure optimal performance. Additionally, they may work closely with front-end developers and designers to ensure a seamless user experience. ActiveAdmin developers use their understanding of business needs to create tailored solutions, ensuring efficient and user-friendly management of data and processes.