A Data Engineer is a skilled professional who specializes in designing, building, and maintaining data infrastructure and systems. They are responsible for developing and implementing data pipelines, data warehouses, and data integration solutions. Data Engineers work closely with data scientists and analysts to ensure data quality, availability, and reliability. They have expertise in programming languages, databases, and data processing frameworks. By managing large volumes of data efficiently, Data Engineers enable organizations to make informed decisions and derive meaningful insights from their data assets.