Top 16
Prep plan
Updated weekly · Last refresh Aug 30
C

CRED Backend Engineer Interview Questions

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

16questions
~2htotal time
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1
CodingStart here. 3 questions · ~28 min
Cycle Detection in Loyalty GraphsEasy
Practice

Detect circular reward dependencies in CRED's directed loyalty graph using DFS and recursion-stack tracking.

cycle detectionCCRED
Thread-Safe Cache with ExpirationMedium

Assesses your ability to implement concurrency-safe caching with correct eviction semantics.

thread safetycacheCCRED
Rolling Window AverageMedium

Evaluates your algorithm design for efficient rolling-window computations over user transactions.

data processingtransactionsCCRED
2
System Design9 questions · ~83 min
Distributed Cache and Key StoreHard

Tests system design skills for building scalable caching and key management services.

distributed systemscachingCCRED
Push Notification at ScaleHard

Evaluates your system design for large-scale messaging throughput and reliability.

scalabilityCCRED
System Design and DSA ImplementationHard

Tests your ability to connect data structures and implementation details to sound backend design.

system designcode qualityProgrammingCCRED
Millions of Bill PaymentsHard

Tests your ability to design high-throughput payment systems for CRED at scale.

system designscalabilityCCRED
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3
Behavioral & Leadership4 questions · ~37 min
Balancing Quality Against SpeedMedium

Tests how a candidate makes a quality-vs-speed trade-off, communicates risk, and owns the outcome.

CommunicationOwnershipPrioritizationCCRED
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The finish line: interview-readyComplete all 16 questions to finish this plan.