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insightsoftware Software Engineer Interview Questions

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

42questions
~6htotal time
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1
SQL & Data ManipulationStart here. 7 questions + 2 drills · ~82 min
Second Highest Trader SalaryEasy
Practice

Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.

SubqueriesRankingSortinginsightsoftware
Clustered vs Non-Clustered IndexesMedium

Explain how clustered and non-clustered indexes differ in storage, lookup behavior, and query performance.

JoinsData Wranglinginsightsoftware
Indexing Strategies and Query TimeMedium

Tests understanding of indexes, query plans, and performance tuning.

indexingperformancequery optimizationinsightsoftware
Deadlock Prevention in TransactionsHard

Tests your ability to reason about transactional concurrency and deadlock avoidance strategies.

acid propertiesperformancetransactionsinsightsoftware
Supplier Cost Variance Trend AnalysisHard
Practice
Practice drill

Use joins, a CTE, and date functions to find monthly supplier cost variance and on-time delivery trends.

financial dataData WranglingperformanceBae Systems Usa
Analyzing Operations Bottlenecks with SQLHard
Practice
Practice drill

Use multi-level CTEs, joins, and LAG to identify Samsung regional inventory shortages and late deliveries.

JoinsperformanceAggregationsSamsung ElectronicsApeel Sciences
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2
Coding9 questions · ~79 min
Optimize Duplicate Detection in ArraysEasy
Practice

Optimize duplicate detection in an integer array using a hash set instead of O(n^2) pairwise comparisons.

SearchingSortingGreedyinsightsoftware
Abstract Classes vs InterfacesEasy

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

javaabstractionoopinsightsoftware
Difference Between Interface and Abstract Class in JavaMedium

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

Hash TablesArraysStringsinsightsoftware
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3
Behavioral & Leadership26 questions · ~228 min
C++ STL ContainersMedium

Tests knowledge of STL and ability to select appropriate data structures for performance.

Data Structuresc++insightsoftware
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The finish line: interview-readyComplete all 42 questions plus 2 hands-on drills to finish this plan.