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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 weekly.

40questions
~5htotal time
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1
CodingStart here. 5 questions · ~40 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
Flexbox Responsive LayoutMedium

Tests practical CSS layout skills for building responsive UI.

csslayoutFrameworksO'Reilly Auto Parts
JavaScript Var Let ConstEasy

Tests JavaScript fundamentals around scoping and hoisting behavior.

javascriptbasicsO'Reilly Auto Parts
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2
Behavioral & Leadership31 questions · ~250 min
Disagreeing on a Technical DirectionMedium

Tests conflict resolution and influence during technical disagreement, including how you challenge decisions and commit after alignment.

Influence Without AuthorityConflict ResolutionteamworkO'Reilly Auto Parts
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3
More topics4 questions · ~32 min
Optimize Multi-Join MySQLHard

Tests SQL performance tuning skills for complex join queries.

Performance TuningJoinsmysqlO'Reilly Auto Parts
Secure REST API DesignMedium

Tests secure API design practices and robustness for production traffic.

rest apisTechnical Fluencysolution designO'Reilly Auto Parts
Zero-Downtime Schema MigrationsHard

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

migrationschema evolutionO'Reilly Auto Parts
Salary ExpectationEasy

Tests compensation alignment and professionalism in Business Analyst hiring.

Trade-offsSuccess CriteriaScope ManagementO'Reilly Auto Parts

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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
Top Customers by Region VolumeMedium
Practice
Practice drill

Find the top 3 customers in each region by transaction volume using joins, aggregation, and window ranking.

Window FunctionsJoinsRankingJPMorganChaseSilicon Valley BankNavi
Calculate Monthly Sales Growth by Product CategoryMedium
Practice
Practice drill

Calculate month-over-month sales growth for each product category using JOINs and window functions.

JoinsAggregationsWayfairREVOLVEFanatics
The finish line: interview-readyComplete all 40 questions plus 3 hands-on drills to finish this plan.