A Jira Agile developer uses Atlassian's Jira software to manage Agile projects, streamline workflows, and track issues. They create user stories, plan sprints, distribute tasks among team members, and track project progress. They also customize Jira settings to fit the team's needs, including creating custom fields, workflows, and dashboards. They ensure the effective use of Jira for Agile methodologies like Scrum or Kanban. Additionally, they may integrate Jira with other tools to enhance functionality and improve team productivity. They play a critical role in enabling efficient project management and improving team collaboration.