🚀 𝐄𝐓𝐋 𝐒𝐜𝐞𝐧𝐚𝐫𝐢𝐨-𝐁𝐚𝐬𝐞𝐝 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰 𝐐𝐮𝐞𝐬𝐭𝐢𝐨𝐧𝐬 𝐟𝐨𝐫 𝐃𝐚𝐭𝐚 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐬

𝐇𝐞𝐫𝐞 𝐚𝐫𝐞 10 𝐜𝐡𝐚𝐥𝐥𝐞𝐧𝐠𝐢𝐧𝐠 𝐄𝐓𝐋 𝐬𝐜𝐞𝐧𝐚𝐫𝐢𝐨-𝐛𝐚𝐬𝐞𝐝 𝐪𝐮𝐞𝐬𝐭𝐢𝐨𝐧𝐬 𝐭𝐡𝐚𝐭 𝐨𝐟𝐭𝐞𝐧 𝐚𝐩𝐩𝐞𝐚𝐫 𝐢𝐧 𝐢𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰𝐬 𝐚𝐭 𝐩𝐫𝐨𝐝𝐮𝐜𝐭 𝐜𝐨𝐦𝐩𝐚𝐧𝐢𝐞𝐬.

👉 How would you design your ETL pipeline to ensure accurate reporting without reprocessing everything?

👉 How would you design the ETL pipeline to deduplicate data efficiently at scale?

👉 How would you design your ETL pipeline so that schema changes don’t break the pipeline?

👉 What data validation checks would you implement before loading data to the warehouse?

👉 How would you design the system so you restart only the failed part without re-running the entire pipeline?

👉 How would you fix the data skew issue?

👉 How would you backfill without disrupting current production pipelines?👉 How would you design a hybrid architecture combining:streaming pipelines batch ETL

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