TCS Data Engineer Interview Questions
The questions to prepare for a TCS Data Engineer interview. Questions from real interview reports rank first. Updated weekly.
Explain a complex ETL transformation you built, including the main challenges and how you handled them.
TCSRedesign a slow Databricks Spark ETL pipeline to cut runtime from 3 hours to under 60 minutes without breaking data quality or SLAs.
TCSApproach for building near-real-time dashboard pipelines with streaming, orchestration, and data quality controls.
TCSTests understanding of Spark Pandas and when it provides benefits over standard Pandas.
TCSTests your ability to select the right processing engine based on scale, performance, and constraints.
TCSTests your data quality handling and decision-making for missing data in pipelines.
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Evaluates practical SQL problem solving and correctness validation for data engineering tasks.
TCSAssesses your ability to explain project decisions and apply cloud experience to data engineering outcomes.
TCSCompute top 10 customers by net sales using joins and aggregations, ordering by revenue with deterministic tie-breaking.
Gain DigitalTCS
Zest AIRank unique salaries by department with DENSE_RANK and return employees in the top three salary tiers.
TCSUse RANK and a department join to identify active TCS iON employees earning the second-highest distinct salary.
TCS