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Updated weekly · Last refresh Aug 30

Booz Allen Software Engineer Interview Questions

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

50questions
~7htotal time
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1
CodingStart here. 21 questions · ~185 min
Find Two Sum IndicesEasy
Practice

Use a hash map to find two array elements that sum to a target in O(n) time.

Hash TablesArraysSortingBooz Allen
Search Insert Position in ArrayEasy
Practice

Use binary search on a sorted array to find a target or its insertion index in O(log n) time.

SearchingSortingAlgorithmsBooz Allen
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2
Execution3 questions · ~26 min
Testing and Deploying to ProductionMedium

Tests your production readiness practices, including testing strategy and deployment discipline.

process improvementTestingdeploymentBooz Allen
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3
SQL & Data Manipulation3 questions + 3 drills · ~56 min
Optimizing a Slow Query or ServiceHard

Tests performance troubleshooting and data/service optimization skills.

Performance Tuningquery optimizationsqlBooz Allen
Database Build ChoiceMedium

Evaluates your ability to select and work with appropriate data storage technologies.

databaseBooz Allen
Second Highest Without AggregatesHard
Practice
Practice drill

Find the second highest salary in each department without using aggregate functions.

SubqueriesRankingSelf-JoinsCredit GenieDevoteamCisco Restaurant + Bar
Cohort Retention with SQLHard
Practice
Practice drill

Compare monthly SparkBeyond user retention by cohort using CTEs, date arithmetic, aggregation, and LAG window functions.

Window FunctionsDate FunctionsAggregationsSparkBeyondBooz Allen
Rolling 30-Day Retention QueryHard
Practice
Practice drill

Calculate acquisition-cohort retention within 30 days by channel using CTEs, joins, and conditional date ranges.

sql queryEvenUpBooz Allen
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4
Security & Infrastructure14 questions · ~123 min
Describe an AWS EC2 InstanceMedium

Evaluates your knowledge of core AWS infrastructure concepts and terminology.

awsBooz Allen
Using Network Test EquipmentHard

Evaluates your practical knowledge of RF and electrical testing tools and workflows.

test equipmenttechnical knowledgeBooz Allen
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5
Behavioral & Leadership8 questions · ~70 min
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6
More topics1 question · ~9 min
CI/CD Pipeline BasicsMedium

Evaluates your understanding of CI/CD and how it supports reliable software delivery.

CI/CDBooz Allen
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.