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Updated weekly · Last refresh Aug 30

Tech Mahindra Data Engineer Interview Questions

The questions to prepare for a Tech Mahindra Data Engineer interview. Questions from real interview reports rank first. Updated weekly.

25questions
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1
SQL & Data ManipulationStart here. 5 questions + 2 drills · ~67 min
Running Total With Window FunctionsEasy
Practice
Recently asked

Calculate each user's running order total over time using a window function.

Window FunctionsDate FunctionsRunning TotalsTech Mahindra
Understanding Common Table Expressions (CTEs)Medium
Recently asked

Explain what CTEs are and their advantages in SQL queries.

CTEsTech Mahindra
Second Highest Trader SalaryEasy
Practice
Practice drill

Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.

SubqueriesRankingSortingeClinicalWorksInformaticaSpectraforce Technologies
Second Highest Salary SQLEasy
Practice
Practice drill

Find every active UST Global employee earning the second-highest distinct salary using a CTE, DENSE_RANK, and a LEFT JOIN.

sqlAggregationsTech MahindraUST GlobalHexaware Technologies
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2
Coding7 questions · ~66 min
Python Anagram and KwargsEasy
Practice

Check whether two strings are anagrams with optional case and whitespace handling using frequency counts.

CodingsqlpythonTech Mahindra
Fixing Spark Data SkewHard
Recently asked

Tests performance tuning skills for Spark, including skew mitigation and shuffle reduction.

Hash TablesArraysSortingTech Mahindra
Spark Window Functions DemoMedium
Recently asked

Tests your ability to implement window-based analytics in Spark using PySpark.

Dynamic ProgrammingArraysStringsTech Mahindra
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3
Pipelines9 questions · ~85 min
Cloud Pipeline Data SecurityMedium
Recently asked

Key security considerations for a cloud data pipeline, from ingestion through storage, orchestration, and monitoring.

InfrastructureGovernanceETLTech Mahindra
S3 vs Redshift DifferencesMedium
Recently asked

Tests your understanding of AWS data storage vs analytics warehousing tradeoffs and usage fit.

InfrastructureToolsData ModelingTech Mahindra
ETL Pipeline With AWSMedium
Recently asked

Tests your AWS-based ETL architecture knowledge, including orchestration, storage, and processing components.

InfrastructureToolsETLTech Mahindra
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4
Behavioral & Leadership4 questions · ~38 min
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The finish line: interview-readyComplete all 25 questions plus 2 hands-on drills to finish this plan.