Top 14
Prep plan
Updated weekly · Last refresh Sep 23
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Lenskart Frontend Engineer Interview Questions

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

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1
CodingStart here. 5 questions · ~47 min
Debounce From ScratchMedium
Practice

Simulate trailing-edge debouncing for Informatica asset search events using timestamps and a quiet-period state machine.

debouncingperformancefunctionsLLenskart
Two Sum Optimal SolutionEasy

Tests problem-solving and algorithmic efficiency for a common coding interview task.

Hash TablesArraysTwo PointersLLenskart
React State ManagementMedium

Tests practical state management choices and tradeoffs in React apps.

Hash TablesArraysData WranglingLLenskart
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2
System Design3 questions · ~28 min
Frontend Performance OptimizationMedium

Evaluates your knowledge of performance bottlenecks and mitigation techniques in the browser.

performanceoptimizationLLenskart
Optimize React Re-rendersMedium

Tests your ability to reduce unnecessary renders using React patterns and profiling.

reactperformanceoptimizationLLenskart
Reusable React Modal or DropdownMedium

Evaluates your component design skills, reusability, and state handling in React.

reactLLenskart

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3
Behavioral & Leadership5 questions · ~47 min
JavaScript and React ExperienceMedium

Tests your depth of hands-on frontend experience with core JavaScript and React concepts.

javascriptreacttechnical experienceLLenskart
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4
More topics1 question · ~9 min
Code Quality and MaintainabilityMedium

Tests engineering practices like testing, reviews, standards, and refactoring discipline.

best practicescode qualitymaintainabilityLLenskart
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