A Pentaho Developer is responsible for designing, developing, and maintaining business intelligence (BI) solutions using the Pentaho platform. They work with ETL (Extract, Transform, Load) processes, create data pipelines, and develop reports and dashboards to support business decision-making. Their role often involves integrating Pentaho with various databases and applications, optimizing performance, and troubleshooting issues. They may also collaborate with data analysts, engineers, and business users to ensure data accuracy and usability. Strong skills in SQL, Java, and data warehousing concepts are typically required for this role.