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Updated weekly · Last refresh Oct 17

LoadUp Software Engineer Interview Questions

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

15questions
~2htotal time
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1
CodingStart here. 3 questions · ~25 min
Full-Stack Rails and React TestsHard

Assesses full-stack implementation skills and testing discipline from UI to backend.

TestingLoadUp
Error Handling ApproachMedium

Evaluates how you design robust error handling and recovery strategies.

error handlingLoadUp
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2
Behavioral & Leadership6 questions · ~50 min
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3
More topics6 questions · ~50 min
SQL vs NoSQL Trade-offsEasy

Explain SQL vs NoSQL trade-offs, including schema design, consistency, scaling, and query flexibility.

JoinsData WranglingAggregationsLoadUp
Refactoring Legacy CodeMedium

Tests your ability to improve maintainability and testability while reducing risk.

refactoringcode qualityLoadUp
Async State ManagementMedium

Tests your ability to build robust async flows and state management in production systems.

asynchronous workCommunicationtechnical experienceLoadUp
Secure Booking REST APIHard

Tests your API design and security practices for handling customer bookings safely.

data integrationAPIsSecurityLoadUp
Schema for Real-Time TrackingHard

Tests your data modeling skills for scalable, real-time fleet tracking at LoadUp.

schema evolutionreal-time dataData ModelingLoadUp
Testing Without Slowing DownMedium

Tests your approach to building reliable software with efficient testing practices.

code qualityprocessTestingLoadUp

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Optimize a Slow SQL QueryHard
Practice
Practice drill

Rewrite a slow PostgreSQL loan payment query to reduce scanned rows while preserving the required aggregated results.

database optimizationJoinsData WranglingAmeripriseEEltro Cyberchrome PrivateEnergyHub
Data Integrity in AnalysesMedium
Practice
Practice drill

Audit claims for missing members, invalid amounts, and payment totals that exceed billed amounts.

JoinsData Wranglingdata validationHealthfirst (New York)BBritvic Soft DrinksAttentive
SQL and Data Tooling ProficiencyMedium
Practice
Practice drill

Aggregate project usage to identify frequently used data analysis tools and compare their hours and ratings.

analytics toolsToolsJoinsLimeadeLaSalle NetworkE15 Group
The finish line: interview-readyComplete all 15 questions plus 3 hands-on drills to finish this plan.