The promotion engine operates on centralized pooled data pipelines powered by Kafka, which are shared across several systems. The engineer will be responsible for validating Kafka data streams used in promotion calculations and ensuring data consistency across promotion, reporting, and referral systems. The role also involves recommending improvements to data structures and storage strategies to support scalability and performance. Since the same pooled data is utilized by multiple systems, maintaining high standards of data accuracy, structural integrity, and consistency is essential to ensure that reporting outputs correctly reflect the underlying promotion calculation logic.