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Flexton Interview Questions

The questions to prepare for Flexton interviews, across all roles. Questions from real interview reports rank first. Updated daily.

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~4htotal time
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1
CodingStart here. 6 questions · ~60 min
Longest Unique Substring in EnoMedium
Practice

Use a sliding window and hash map to find the longest substring without repeated characters in a string.

Hash TablesStringsTwo PointersFlexton
Unique Array PermutationsMedium
Practice

Generate every distinct permutation of an integer array using sorted backtracking with duplicate pruning.

RecursioncombinatoricsArraysFlexton
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2
Technical Fundamentals8 questions · ~80 min
Prototypal Inheritance vs ClassesMedium

Tests JavaScript inheritance model knowledge and ability to compare implementation details.

javascripttechnical experienceFlexton
Virtual DOM RenderingMedium

Tests frontend architecture knowledge and performance-oriented rendering concepts.

technical experiencerenderingFlexton
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3
Behavioral & Leadership7 questions · ~70 min
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4
More topics4 questions · ~40 min
Large-Scale Frontend StateMedium

Tests ability to design maintainable state management approaches for complex UIs.

state managementtechnical experienceFlexton
Secure Microservice CommunicationHard

Tests security fundamentals for service-to-service communication in distributed systems.

Securitytechnical experiencemicroservicesFlexton
Spring Annotations and ControllersMedium

Assesses your understanding of Spring and API design fundamentals.

api designFlexton
Project Architecture WalkthroughMedium

Tests system design thinking and ability to justify technology choices.

backgroundCommunicationself introductionFlexton
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