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Updated weekly · Last refresh Nov 11

Paytm Software Engineer Interview Questions

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

50questions
~8htotal time
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1
SQL & Data ManipulationStart here. 9 questions + 1 drill · ~98 min
OOP FundamentalsMedium
Recently asked

Evaluates your knowledge of core object-oriented programming concepts.

Paytm
Common Users Between Two TablesEasy
Practice
Recently asked

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

JoinssqlPaytm
Max Salary Across DepartmentsMedium
Practice
Practice drill

Find each department's maximum salary and all employees tied at that salary using aggregation and joins.

aggregationsqlInformaticaPaytm
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2
Coding10 questions · ~97 min
Max Profit Stock TradingMedium
Practice
Recently asked

Find the maximum profit from one stock transaction using a single-pass running minimum.

ArraysGreedyArray ManipulationPaytm
Max Sum BST SubtreesHard
Practice
Recently asked

Find the maximum sum among all subtrees that are valid BSTs using a postorder DFS.

bstDynamic ProgrammingdfsPaytm
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3
Technical Fundamentals10 questions · ~97 min
Explain Event Loop and PromisesHard
Recently asked

Explain how the JavaScript event loop schedules tasks and microtasks, and how Promise settlement controls asynchronous callback execution.

Async Programmingasynchronous workjavascriptPaytm
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4
Security & Infrastructure9 questions · ~88 min
Use Semaphores in OSMedium
Recently asked

Tests understanding of concurrency primitives and their OS usage.

Operating SystemsPaytm
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5
System Design9 questions · ~88 min
Design a Database SchemaMedium
Recently asked

Assesses database modeling and schema design tradeoffs for a real feature.

schema designdatabasePaytm
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6
More topics3 questions · ~29 min
Real-time ETL for PaymentsHard
Recently asked

Evaluates data engineering skills for streaming analytics in payments domain.

ETLdata ingestionPaytm
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The finish line: interview-readyComplete all 50 questions plus 1 hands-on drill to finish this plan.