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Lucid Software Software Engineer Interview Questions

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

50questions
~7htotal time
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1
CodingStart here. 30 questions · ~256 min
Check If Array Is IncreasingEasy
Practice

Check whether Lucidchart coordinate values are strictly increasing with a single linear scan.

Lucid Software
Collaborative Canvas Entity ModelHard
Recently asked

Tests data modeling for collaborative visual editing and separation of concerns.

abstractionfunctionsoopLucid Software
Parking Lot System With InheritanceMedium
Recently asked

Tests OOP design, class responsibilities, and thoughtful use of inheritance.

javaabstractionoopLucid Software
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2
Execution6 questions · ~51 min
Online Assessment and Tech RoundMedium

Evaluates how you perform in structured assessments and communicate progress.

Lucid Software
Coding Interview Without TalkingMedium

Assesses silent problem-solving, correctness under time pressure, and prioritization.

coding interviewbehavioralLucid Software
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3
System Design5 questions · ~43 min
Family Model Class DesignMedium

Tests object modeling and class design for representing real-world relationships.

modelingLucid Software
Family Model With Complex RelationshipsMedium

Evaluates entity modeling and handling of relationship complexity in system design.

Lucid Software
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4
Behavioral & Leadership8 questions · ~68 min
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5
More topics1 question · ~9 min
Genealogical Relationships in SQLMedium

Evaluates data modeling skills for hierarchical relationships using relational schemas.

Lucid Software

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Sum From 1 to 1,000,000Easy
Practice
Practice drill

Calculate the sum of integers from 1 to 1,000,000 using PostgreSQL aggregation and filtering.

AlgorithmsVirtu Financial
Basic SQL and String ReverseEasy
Practice
Practice drill

Reverse Costar property search strings with PostgreSQL and flag rows whose stored expected value does not match.

sql queriesstring manipulationCostar
SQL: Character CountEasy
Practice
Practice drill

Count a target character case-insensitively in a Discord message using PostgreSQL string functions.

Data Analysissql queriesstring manipulationDiscord
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