HCL Data Engineer Interview Questions
The questions to prepare for a HCL Data Engineer interview. Questions from real interview reports rank first. Updated weekly.
Tests performance tuning skills and production-safe troubleshooting for SQL workloads.
HCLTests data quality judgment and practical imputation approaches for reliable analytics.
HCLTests ability to reason about SQL querying patterns with analytical schemas.
HCLRank HCL customers by completed-order sales using joins, aggregation, a CTE, and deterministic ordering.
Itlize GlobalHCL
FractalFind the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.
eClinicalWorks
Informatica
Spectraforce TechnologiesUse GROUP BY and HAVING to exclude students missing marks in two or more subjects.
PayPalTests distributed systems thinking and mitigation strategies for skew-related performance issues.
HCLTests orchestration design choices, reliability practices, and operational experience with pipelines.
HCLTests migration planning, risk management, and understanding of connectivity, governance, and performance.
HCLTests understanding of Spark abstractions and how they impact performance and developer ergonomics.
HCLTests PySpark window function implementation skills for common analytics transformations.
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