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Updated weekly · Last refresh Oct 17

Walmart Software Engineer Interview Questions

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

50questions
~13htotal time
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1
CodingStart here. 21 questions · ~323 min
Longest Subarray of 1sEasy
Practice

Find the maximum length of a contiguous subarray containing only 1s in a binary array.

ArraysWalmart
String Replacement in DocumentsEasy
Practice

Replace every occurrence of one substring with another in a single pass.

CodingBasic AlgorithmsStringsWalmart
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2
System Design18 questions · ~277 min
Job Scheduling for Walmart PharmacyHard

Design a system to route partially filled prescriptions to the right Walmart pharmacy with low latency and strong failure handling.

ML Rankingdistributed systemsfailure modesWalmart
SSO System DesignHard

Design an SSO system for Walmart, including session management and secure user information storage.

data securityauthorizationapi gatewayWalmart
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3
Behavioral & Leadership6 questions · ~92 min
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4
More topics5 questions · ~77 min
SQL Certification LeaderboardMedium
Practice

Find the student who has earned the highest number of certifications.

Group Bydatabase queryingAggregationsWalmart
Copilot Security QuestionMedium

Design controls to stop sensitive code, secrets, and customer data from reaching IDE Copilot integrations.

application securitycode securityaccess managementWalmart
Distributed Systems Trade-offsHard
Recently asked

Evaluates distributed systems design judgment and ability to explain trade-offs.

Trade-offsdistributed systemsWalmart
Security Badge In and OutMedium
Recently asked

Assesses operational security awareness and adherence to access control processes.

SecurityAlgorithmsWalmart
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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
SQL: Store Performance and MarginHard
Practice
Practice drill

Join CVS store, sales, and inventory data to calculate margin, rank stores, and flag underperforming locations.

JoinsGroup ByAggregationsCVS HealthDICK'S Sporting GoodsWalmart
Above-Average SalaryEasy
Practice
Practice drill

Filter employees whose salary exceeds the overall average salary using PostgreSQL.

null handlingdatabase queryingAggregationsAccentureWalmart
The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.