A Data Blending Developer integrates data from multiple sources to provide a unified view, aiding in decision making. They utilize tools like Alteryx, Tableau, and Power BI to blend data, ensuring accuracy and consistency. Their work involves data extraction, transformation, and loading (ETL), as well as cleaning and validating data to optimize data accuracy. They also design and develop data models to support business intelligence tools. Additionally, they troubleshoot data issues, maintain data integrity, and work closely with data analysts and other stakeholders to understand data needs, providing insights for effective decision-making. They must be skilled in SQL and data warehousing.