An AWS Athena developer primarily utilizes Amazon's Athena service to analyze, query, and extract valuable insights from vast amounts of data stored in Amazon . They write complex SQL queries to fetch data, design databases, tables, and schemas, and optimize query performance. They are also responsible for data management tasks, including data partitioning and compression. Additionally, they ensure data security and compliance by implementing necessary access controls. Their role often involves working closely with data scientists and analysts, providing them with the necessary data to develop predictive models or business strategies.