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Booking Holdings Software Engineer Interview Questions

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

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~2htotal time
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1
CodingStart here. 7 questions · ~62 min
Optimal String or Array ProblemMedium
Recently asked

Tests your ability to derive efficient solutions for common string and array problems.

time complexityArraysstring manipulationBBooking Holdings
Optimize Search for ScaleHard
Recently asked

Tests your algorithmic thinking and performance optimization for search at Booking Holdings scale.

optimizationBBooking Holdings
High-Frequency Data ProcessingMedium
Recently asked

Tests your ability to design and implement efficient systems for high-throughput data processing.

data processingperformance optimizationscalabilityBBooking Holdings
Refactor for Readability and PerformanceMedium
Recently asked

Tests your code quality skills, including refactoring for clarity and measurable performance improvements.

performance optimizationBBooking Holdings
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2
Behavioral & Leadership5 questions · ~44 min
Explaining a High-Impact ProjectEasy
Recently asked

Tests whether you can clearly explain a past project with ownership, decision-making, and measurable impact.

Communicationrecent projectstechnical experienceBBooking Holdings
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3
More topics3 questions · ~26 min
SQL vs NoSQL ChoiceMedium

Evaluates database tradeoffs and decision-making for Booking Holdings data use cases.

nosqlsqlBBooking Holdings
Credit Card Fraud Detection SystemHard

Evaluates system design for real-time and batch fraud detection at Booking Holdings scale.

api integrationfraud detectionBBooking Holdings
Build a Project From ScratchHard

Assesses ownership, execution, and end-to-end delivery for a new technical project.

technicalProject ManagementBBooking Holdings

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Top 5 Products Per MonthMedium
Practice
Practice drill

Rank completed product sales by month using joins, aggregation, date truncation, and ROW_NUMBER().

sqlCGICgi NederlandCGI Group
Top Users by Recent Transaction VolumeMedium
Practice
Practice drill

Find the top 3 users by completed transaction volume in the last 30 days using joins and aggregation.

Data Analysisquery optimizationsqlTTier 1 BankRevolutChime
SQL for Running AverageMedium
Practice
Practice drill

Calculate five-day rolling service averages using daily aggregation, a calendar join, and PostgreSQL window functions.

queriessqlExlEXL ServiceSystem One
The finish line: interview-readyComplete all 15 questions plus 3 hands-on drills to finish this plan.