TCS Data Engineer Interview Questions
The questions to prepare for a TCS Data Engineer interview. Questions from real interview reports rank first. Updated daily.
Redesign a slow Databricks Spark ETL pipeline to cut runtime from 3 hours to under 60 minutes without breaking data quality or SLAs.
TCSExplain a complex ETL transformation you built, including the main challenges and how you handled them.
TCSPractical approach for maintaining data quality across ML ETL pipelines, orchestration, and repeatable data processing.
TCSUse a linear array traversal to return the square of every number while preserving order.
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.
TCSEvaluates 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.
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Audit claims for missing members, invalid amounts, and payment totals that exceed billed amounts.
Healthfirst (New York)BBritvic Soft Drinks
AttentiveCompute 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.
TCS