A Data Engineering Developer designs, constructs, tests, and maintains highly scalable data management systems. They ensure systems meet business requirements and industry practices, integrate new data management technologies and software engineering tools into existing structures, and develop set procedures for data sharing. They also create data set processes used in modeling, mining, acquisition, and verification. They work on the architecture of data systems, dealing with raw data that has both structured and unstructured forms. Their role is crucial in developing algorithms to help in data analytics, and ensuring the data does not have any privacy, compliance, or security risks.