Top 41
Prep plan
Updated weekly · Last refresh Aug 30

Paytm Data Engineer Interview Questions

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

41questions
~6htotal time
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1
CodingStart here. 12 questions · ~105 min
Palindrome FunctionEasy
Practice

Use two pointers to determine whether a City National Bank reference label reads identically forward and backward.

RecursionStringsTwo PointersPaytm
SQL and Spark Data TransformationMedium

Assesses practical ability to implement data transformations across SQL and Spark.

sqlsparkPaytm
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2
SQL & Data Manipulation10 questions + 2 drills · ~108 min
SQL Nth Highest Salary QueryEasy
Practice

Find the third-highest distinct employee salary using PostgreSQL DISTINCT, ORDER BY, LIMIT, and OFFSET.

sql queryRankingsalaryPaytm
Understanding ACID Properties in DatabasesMedium

Explain the ACID properties of database transactions and their importance.

Paytm
Explain ACID for Card TransactionsEasy

Explain ACID properties and why they protect financial transaction data in card and payments systems.

acid propertiesfinancial datadata integrityPaytm
Common Users Between Two TablesEasy
Practice
Recently asked
Practice drill

Use CTEs and an INNER JOIN to find distinct Paytm users active in both Wallet and UPI during January 2026.

JoinssqlPaytm
Top-Performing Employee Each Month SQLMedium
Practice
Practice drill

Use CTEs, aggregation, joins, and RANK to find every top Paytm sales employee each month, including ties.

sqlPaytm
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3
Pipelines16 questions · ~140 min
Optimize Slow Spark ETL PipelineHard

Redesign a slow Databricks Spark ETL pipeline to cut runtime from 3 hours to under 60 minutes without breaking data quality or SLAs.

Paytm
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityPaytm
Handle PySpark Data SkewMedium

Approach for detecting and mitigating skew in PySpark pipelines using partitioning, join strategies, and runtime monitoring.

Data Qualitypysparkdata skewnessPaytm
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4
Behavioral & Leadership3 questions · ~26 min
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The finish line: interview-readyComplete all 41 questions plus 2 hands-on drills to finish this plan.