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Updated weekly · Last refresh Aug 30

Mastercard Software Engineer Interview Questions

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

50questions
~8htotal time
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1
CodingStart here. 12 questions · ~113 min
Implement Word Search in a GridHard
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Determine if a word exists in a 2D grid of characters using backtracking.

RecursionArraysStringsMastercard
Merge Overlapping IntervalsMedium
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Sort intervals by start time, then merge overlapping ranges into a minimal non-overlapping list.

ArraysSearchingSortingMastercard
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2
SQL & Data Manipulation9 questions + 3 drills · ~115 min
3
Security & Infrastructure11 questions · ~104 min
OAuth vs SAML vs OIDCMedium

Assesses identity and access protocol knowledge and correct usage distinctions.

Mastercard
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4
System Design11 questions · ~104 min
ACID Transactions and RecoveryMedium

Evaluates understanding of transactional guarantees and failure recovery mechanisms.

acid propertiesdata integrityMastercard
Database Scaling and Data ModelsMedium

Assesses trade-offs in scaling strategies and database selection for reliable backend services.

horizontal scalingvertical scalingMastercard
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5
Execution3 questions · ~28 min
When Is Development DoneMedium

Evaluates your definition of done, including testing, review, and quality gates.

Mastercard
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6
Behavioral & Leadership3 questions · ~28 min
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7
More topics1 question · ~9 min
HTTP Request HandlingMedium

Tests your ability to implement correct and robust HTTP client logic.

Mastercard
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.