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Updated weekly · Last refresh Oct 17

O'Reilly Auto Parts Software Engineer Interview Questions

The questions to prepare for a O'Reilly Auto Parts Software Engineer interview. Questions from real interview reports rank first. Updated daily.

48questions
~7htotal time
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1
CodingStart here. 8 questions · ~70 min
Analyze Algorithm Time and SpaceEasy

Explain how to analyze an algorithm’s time and space complexity and justify the final Big O bounds.

MathArraysGreedyO'Reilly Auto Parts
Polymorphism DefinitionEasy

Assesses your core OOP knowledge and ability to explain it precisely.

oopO'Reilly Auto Parts
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2
Technical Fundamentals4 questions · ~35 min
JavaScript Equality OperatorsEasy

Tests understanding of JavaScript type coercion and equality semantics.

javascriptweb technologiesO'Reilly Auto Parts
Java Concurrency and DeadlocksMedium

Tests concurrency fundamentals and deadlock prevention strategies in Java.

javatechnical experienceconcurrencyO'Reilly Auto Parts
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3
Execution3 questions · ~26 min
Testing Login and PasswordMedium

Evaluates your test strategy for authentication flows, security considerations, and edge cases.

TestingO'Reilly Auto Parts
Secure REST API DesignMedium

Tests secure API design practices and robustness for production traffic.

rest apisTechnical Fluencysolution designO'Reilly Auto Parts
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4
Behavioral & Leadership31 questions · ~271 min
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5
More topics2 questions · ~18 min
Optimize Multi-Join MySQLHard

Tests SQL performance tuning skills for complex join queries.

Performance TuningJoinsmysqlO'Reilly Auto Parts
Zero-Downtime Schema MigrationsHard

Tests migration planning and techniques to minimize downtime during schema changes.

migrationschema evolutionO'Reilly Auto Parts
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Top Product Revenue Last 30 DaysMedium
Practice
Practice drill

Use joins, a CTE, and aggregation to rank the top 5 products by non-returned revenue in the last 30 days.

Date FunctionsJoinsAggregationsBlue NileO'Reilly Auto PartsCengage
Refactoring a Slow QueryMedium
Practice
Practice drill

Refactor a slow Candid Health claims query using pre-aggregation, latest-event logic, and monthly payer metrics.

Performance Tuningdatabase optimizationCTEsCandid Health
Troubleshooting Data Integration IssuesMedium
Practice
Practice drill

Reconcile records from two systems and classify missing records, amount differences, and status discrepancies.

data integrationnull handlingJoinsAutodesk
The finish line: interview-readyComplete all 48 questions plus 3 hands-on drills to finish this plan.