Real Interview Questions

How would you use Snowflake tasks for ELT?

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Snowflake Elt Data Pipelines

🟡 Medium Conceptual Mid 👤 Data Engineering Asked 1× Jul 2026

A new column was added without informing the data team, causing the pipeline to fail. How would you prevent such situations?

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Data Engineering Data Pipelines Schema Management

🟡 Medium Conceptual Junior 👤 Data Engineering Asked 1× Jul 2026

Can you explain how you applied ETL design principles in your data pipeline projects to ensure reliability and efficiency?

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Etl Data Pipeline Reliability Efficiency

🟡 Medium Conceptual Mid 👤 Data Engineering Asked 1× Jul 2026

Could you please explain your approach to ETL design to help me understand your experience better?

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Etl Data Pipeline Design Principles

🟡 Medium Conceptual Mid 👤 Data Engineering Asked 1× Jul 2026

If a production data pipeline was failing for a year and two teammates disagreed on the fix, how would you handle the situation, decide the next step, and keep the team aligned while protecting delivery?

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Data Pipeline Conflict Resolution Team Management

🟡 Medium Behavioral Mid Asked 1× Jul 2026

I have seven years of data in a pipeline. I want to ensure data integrity, stability, and regulatory compliance. What features would you implement in a data pipeline to achieve this?

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Data Pipeline Data Integrity Regulatory Compliance

🟡 Medium Conceptual Mid 👤 Data Engineering Asked 1× Jul 2026

How can the Python built‑in logging module be configured and used to meet audit requirements in a financial data pipeline? What log levels and handlers would you recommend?

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Python Logging Audit Logging Financial Data Pipeline

🟡 Medium Conceptual Mid 👤 Data Engineering Asked 1× Jul 2026

Tell me about a time when you had to troubleshoot a complex issue in a production data pipeline. What tools and techniques did you use to resolve the issue?

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Data Pipeline Troubleshooting Production Systems

🟡 Medium Behavioral Mid 👤 Data Engineering Asked 1× Jul 2026

Can you describe the architecture of your data pipelines? How do you develop, deploy, and productionize them, and what infrastructure do you use?

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Data Pipelines Devops Infrastructure

🟡 Medium System Design Mid 👤 Data Engineer/ Data Modeler 🏢 altimatrix Asked 1× Jul 2026

What is the typical flow from a database to a data lake, and what is the final step in the data pipeline?

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Data Lake Database Data Pipeline

🟡 Medium Conceptual Mid 👤 Data Engineer/ Data Modeler 🏢 capgemini Asked 1× Jul 2026

Have you built any pipelines in Dataplex for convenience of building pipelines?

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Dataplex Data Pipeline Convenience

🟡 Medium Behavioral Mid 👤 Data Engineer/ Data Modeler Asked 1× Jul 2026

Which database service can be used to build a pipeline that uses native PySpark code?

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Database Pyspark Data Pipeline

🟡 Medium Conceptual Mid 👤 Data Engineer/ Data Modeler Asked 1× Jul 2026

We are talking about a Databricks pipeline. Which pipeline did you develop, and which database did you use?

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Databricks Data Pipeline Database

🟡 Medium Conceptual Mid 👤 Data Engineer/ Data Modeler Asked 1× Jul 2026

In a Spark‑based pipeline built with PySpark, there are multiple compute options available. Which compute option would you prefer and why? Also, how would you parameterize the pipeline?

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Spark Pyspark Data Pipeline Compute Options

🟡 Medium Conceptual Mid 👤 Data Engineer/ Data Modeler Asked 1× Jul 2026

Are you using a specific S3 blob storage cloud provider? Do you store information in the pipeline?

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S3 Blob Storage Data Pipeline

🟡 Medium Conceptual Junior 👤 Data Engineer/ Data Modeler Asked 1× Jul 2026

Say you have ingestion pipelines; what are you primarily using? Are you using Databricks or Snowflake? Was the whole platform considered?

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Data Pipelines Databricks Snowflake

🟡 Medium Conceptual Mid 👤 Data Engineer/ Data Modeler 🏢 capgemini Asked 1× Jul 2026

What is the typical sequence of steps when building a data architecture that starts with a data lake, then processes data, and finally makes it available for BI reporting?

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Data Lake Bi Data Pipeline

🟡 Medium Conceptual Mid 👤 Data Engineer/ Data Modeler 🏢 capgemini Asked 1× Jul 2026

Do you schedule end‑to‑end flows in Databricks, for example ingesting data through an API, performing cleansing and transformations all the way to the core layer? Are these runs scheduled to execute daily or at specific intervals? If failures occur, how do you receive notifications and troubleshoot the issue?

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Databricks Etl Scheduling Job Monitoring Failure Handling Data Pipeline

🟡 Medium Conceptual Mid 👤 Data Engineer/ Data Modeler 🏢 capgemini Asked 1× Jul 2026

When an enhancement impacts the silver or bronze layers, how do you understand the chronology of events to determine which objects or jobs need to be monitored and adjusted when making changes to the gold or silver layers?

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Data Pipeline Change Impact Analysis Silver Layer Bronze Layer Gold Layer

🟡 Medium Conceptual Mid 👤 Data Engineer/ Data Modeler 🏢 capgemini Asked 1× Jul 2026

How do you configure a full refresh for a data pipeline?

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Etl Data Pipeline

🟢 Easy Conceptual Junior 👤 Data Engineer 🏢 everesttech Asked 1× Jul 2026