A Business Objects Data Integrator Developer designs, develops, and maintains ETL (Extract, Transform, Load) processes to move and transform data across various systems. They use SAP Business Objects Data Integrator tool to ensure data consistency, integrity, and accuracy. Their role involves data mapping, data cleansing, and data profiling, while also managing metadata for data warehouse. They troubleshoot data integration issues and collaborate with other teams to define data requirements and business rules. Additionally, they also create technical documentation to support the data integration process and assist in data-related testing and data validation.