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Updated weekly · Last refresh Oct 17

Licorne Society Software Engineer Interview Questions

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

15questions
~2htotal time
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1
CodingStart here. 3 questions · ~27 min
Flatten Nested Tags EfficientlyMedium
Practice

Flatten arbitrarily nested category tags while preserving first-seen order and removing duplicates.

RecursiondeduplicationArraysLicorne Society
Parse and Normalize Contact InfoMedium

Tests your ability to implement robust parsing and normalization logic.

json parsingStringspythonLicorne Society
Autocomplete Minimizing DB LoadHard

Tests your ability to design efficient search and caching strategies.

SearchingcachingtraversalLicorne Society
2
Behavioral & Leadership7 questions · ~64 min
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3
More topics5 questions · ~46 min
SQL vs NoSQL Trade-offsMedium

Tests your data modeling judgment and understanding of SQL vs NoSQL trade-offs.

null handlingperformanceData ModelingLicorne Society
Big O and Complexity AnalysisMedium

Tests your understanding of algorithmic complexity and ability to reason about performance.

self assessmenttime complexitytechnical experienceLicorne Society
Rate Limiting for Public APIsHard

Tests your ability to design resilient request throttling for a public API under load.

Trade-offsapi designrate limitingLicorne Society
Background Jobs for Bulk TasksHard

Tests your system design skills for asynchronous processing and reliability.

Batch ProcessingOrchestrationAutomationLicorne Society
Zero-Downtime Database MigrationsHard

Tests your ability to plan safe schema changes without impacting live users.

Rollback PlanRisk AssessmentdeploymentLicorne Society

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Automate with Your Programming LanguageMedium
Practice
Practice drill

Count Citi workflow task types with more than one exception and show the latest review date.

Data ManipulationAutomationtechnical experienceCiti
Advanced Data Modeling for PerformanceHard
Practice
Practice drill

Calculate Citi business-unit performance variance against targets and identify the largest shortfalls.

business problemdata managementtechnical experienceCiti
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 15 questions plus 3 hands-on drills to finish this plan.