A Deduplication Developer works on designing, implementing, and maintaining systems that eliminate duplicate data entries in databases. They develop algorithms to identify redundant data, ensuring efficient use of storage and improving data retrieval and analysis. Their role involves understanding the data structure, creating rules for deduplication, and integrating these rules into the system. They also troubleshoot issues and optimize the performance of the deduplication process. Furthermore, they collaborate with other team members to ensure data integrity and accuracy. Their work contributes to the overall goal of enhancing system performance, data quality, and storage efficiency.