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Updated weekly · Last refresh Aug 30

Phonepe Software Engineer Interview Questions

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

50questions
~8htotal time
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1
CodingStart here. 12 questions · ~117 min
Design Parking Lot ClassesMedium
Practice
Recently asked

Design an OOP parking lot system in Python using classes, abstraction, and efficient spot tracking.

abstractiondesign patternsoopPhonepe
Find Missing Number kEasy
Practice

Find the missing integer from 1 through n using XOR with O(n) time and O(1) extra space.

Phonepe
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2
Execution12 questions · ~117 min
Payment Race Conditions and LockingMedium
Recently asked

Tests concurrency control understanding for correctness in financial transactions.

Trade-offsconsistencyPhonepe
Rate Limiter for PhonePe APIsHard
Recently asked

Tests API protection design, throughput/latency tradeoffs, and resilience.

Trade-offsdesign systemavailabilityPhonepe
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3
SQL & Data Manipulation3 questions + 3 drills · ~59 min
SQL Window Functions for TransactionsHard
Recently asked

Tests advanced SQL skills with joins and window functions for analytics.

Window FunctionsJoinsRankingPhonepe
SQL Substring and LengthEasy
Practice
Practice drill

Use PostgreSQL LENGTH and SUBSTR to extract the last four digits from successful PhonePe UPI references.

sql queryPhonepe
Top Customers by Region VolumeMedium
Practice
Practice drill

Find the top 3 customers in each region by transaction volume using joins, aggregation, and window ranking.

Window FunctionsJoinsRankingJPMorganChaseSilicon Valley BankNavi
Top Delayed Routes by RegionMedium
Practice
Practice drill

Use a CTE and window ranking to find the top 3 routes with the highest average delay in each region.

Window FunctionsJoinsRankingCoca-Cola ConsolidatedAPL LogisticsFlexport
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4
System Design12 questions · ~117 min
Customer Issue Resolution SystemHard

Tests system design skills for workflows, state management, and operational handling of customer issues.

system designPhonepe
Multiplayer Game DesignHard

Assesses system design thinking for multiplayer gameplay, state, and coordination.

system designPhonepe
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5
Security & Infrastructure8 questions · ~78 min
Kernel vs Operating SystemMedium

Tests understanding of OS fundamentals and security-relevant system concepts.

Operating SystemsPhonepe
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6
Behavioral & Leadership3 questions · ~29 min
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The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.