A backlog management developer prioritizes and organizes project tasks, known as a backlog, in agile development. They decide the sequence of tasks based on their urgency, complexity, and importance to the project, ensuring optimal workflow. They also monitor and adjust this list as necessary, considering changes in project requirements, resources, and stakeholder feedback. They coordinate with different teams, help to clarify task details, and aim to improve the development process efficiency. Their goal is to streamline the workflow, reduce waste, and ensure that the team is working on the highest priority tasks that add the most value to the project.