Databases, Data Lakes, and Data Warehouses: Expect questions about your experience with different database types, data lake architectures, and data warehousing technologies. ETL Processes: Be prepared to discuss your experience with Extract, Transform, and Load processes, including tools and techniques you've used. Programming Languages: Familiarity with languages like SQL, Python, Java, and Scala is crucial. Data Catalog and Data Mesh: Knowledge of these concepts and their applications is valuable. Cloud Platforms: Experience with cloud platforms like AWS, Azure, or GCP is often sought after.