Data Pipelines Interview Questions

12 real Data Pipelines questions asked in live technical interviews — each with a model answer. Updated weekly.

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These Data Pipelines interview questions were captured from real interviews by candidates using Assisting AI. Each links to a full model answer. For real-time help during your own interview, get Assisting AI from ₹500/day.

Have you worked with streaming pipelines and batch networks?🟡 Medium · Behavioral · Asked 3×Can you describe the architecture of your data pipelines? How do you develop, deploy, and productionize them, and what infrastructure do you use?🟡 Medium · System Design · Asked 1×Say you have ingestion pipelines; what are you primarily using? Are you using Databricks or Snowflake? Was the whole platform considered?🟡 Medium · Conceptual · Asked 1×The previous version of the data is gone. We have a new version of the data, but it is incorrect. We cannot give it to downstream systems or the business.🟡 Medium · Conceptual · Asked 1×Explain the ETL process in data engineering. What do the steps Extract, Transform, and Load entail?🟢 Easy · Conceptual · Asked 1×How do you manage schema changes in time-series data? For example, if a pipeline suddenly receives five new columns, how would you handle that?🟡 Medium · Conceptual · Asked 1×I want to know what data engineering is all about. I come from a non‑tech background. Please explain it in two or three brief lines.🟢 Easy · Conceptual · Asked 1×In Kafka, how can you evaluate schema changes from upstream so that adding or removing fields does not cause problems? Explain how backward and forward compatibility work and how to manage schema evolution without breaking downstream consumers.🟡 Medium · Conceptual · Asked 1×Were the data sources known? Was the data loaded? Which scheduling orchestration did you use, as mentioned Airflow?🟡 Medium · Conceptual · Asked 1×Do you have experience designing end-to-end pipelines in AWS?🟡 Medium · Behavioral · Asked 1×Mention the steps you took to move data from source to the bronze layer.🟡 Medium · Conceptual · Asked 1×We need to build for scale: 500 million transactions.🟡 Medium · System Design · Asked 1×

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