Tech Mahindra Data Engineer interview questions

Tell me about your current project. Explain the end-to-end architecture of your project. What is Medallion Architecture? Why do we need Bronze, Silver, and Gold layers? Source Systems & Ingestion How do you get extracts from source systems? What is the extraction frequency? What integration mechanism do you use between source systems and GCP? How do you load data from GCS to BigQuery? If you don't want to use Airflow, what alternatives can you use? Migration