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REI (Recreational Equipment Inc.) Software Engineer Interview Questions

The questions to prepare for a REI (Recreational Equipment Inc.) Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

36questions
~5htotal time
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1
CodingStart here. 7 questions · ~57 min
Abstract Classes vs InterfacesEasy

Compare Java abstract classes and interfaces, including inheritance rules, shared behavior, and when each is the better design choice.

javaabstractionoopREI (Recreational Equipment Inc.)
Difference Between Interface and Abstract Class in JavaMedium

Explain the differences between interfaces and abstract classes in Java and when to use each.

Hash TablesArraysStringsREI (Recreational Equipment Inc.)
Binary Search Tree ImplementationMedium

Tests your ability to implement and reason about tree operations and performance characteristics.

Data StructuresTreesAlgorithmsREI (Recreational Equipment Inc.)
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2
SQL & Data Manipulation4 questions + 3 drills · ~63 min
Design Retail Inventory SchemaMedium

Tests your ability to model inventory data and relationships for a retail inventory system.

schema designinventoryData ModelingREI (Recreational Equipment Inc.)
SQL vs NoSQL for TransactionsMedium

Tests your understanding of data models and consistency requirements for transactional workloads.

performancetransactionsdata integrityREI (Recreational Equipment Inc.)
SQL Queries for RankingMedium
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Rank active HSBC employees by division and return every employee tied for the highest or second-highest salary.

javasqlHsbc
Top Models Per Asset ClassEasy
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Rank Balyasny research models by average return within each asset class using DENSE_RANK and aggregation.

performancesqlBalyasny Asset Management
Analyzing Operations Bottlenecks with SQLHard
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Use multi-level CTEs, joins, and LAG to identify Samsung regional inventory shortages and late deliveries.

JoinsperformanceAggregationsSamsung ElectronicsApeel Sciences
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3
Behavioral & Leadership22 questions · ~180 min
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4
More topics3 questions · ~25 min
Connection Pooling for ConcurrencyMedium

Tests your ability to prevent bottlenecks and manage database connections under load.

InfrastructureperformanceconcurrencyREI (Recreational Equipment Inc.)
Step-By-Step Problem SolvingMedium

Tests your ability to communicate clear, structured reasoning during execution.

ClarityREI (Recreational Equipment Inc.)
Caching Product CatalogMedium

Tests your approach to caching, invalidation, and performance trade-offs for product discovery.

InfrastructureperformancecachingREI (Recreational Equipment Inc.)
The finish line: interview-readyComplete all 36 questions plus 3 hands-on drills to finish this plan.