A BTEQ (Basic Teradata Query) Developer is a professional who specializes in writing and executing scripts using Teradata's native utility, BTEQ. They handle data extraction, transformation, and loading (ETL) processes, developing complex SQL queries to manipulate or retrieve data from the Teradata database. They also perform tasks like database maintenance, troubleshooting, performance tuning, and ensuring data integrity. They often work closely with data analysts and other stakeholders to understand requirements and deliver solutions. Additionally, they may assist in developing and implementing database security protocols. Knowledge of SQL programming and understanding of data warehousing concepts are essential for this role.