An AWS Glue Developer is responsible for designing, developing, and managing data integration workflows using AWS Glue, a managed ETL (Extract, Transform, Load) service. They work with AWS technologies such as S3, Lambda, and Redshift to process and transform large datasets efficiently. Their role includes writing PySpark or Scala scripts, optimizing ETL jobs, and ensuring data pipelines meet business requirements. AWS Glue Developers collaborate with data engineers, analysts, and architects to implement scalable and reliable data solutions in cloud environments.