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Frontend Engineer Interview Preparation

Master frontend engineering interviews with JavaScript, React, and web development focused questions.

Key Skills & Technologies

JavaScript/TypeScript
React/Vue/Angular
CSS/HTML
Web APIs
Performance Optimization
Browser Compatibility

Interview Focus Areas

DOM manipulation and event handling
Asynchronous JavaScript (Promises, async/await)
Frontend performance optimization
Component design patterns
State management
Browser APIs and compatibility

Top Hiring Companies

MetaGoogleNetflixAirbnbUber

Top Frontend Engineer Coding Questions

Practice these 20 most relevant coding problems for frontend engineer interviews.

#1EasyFrequency: 100%

Two Sum

Asked at Google
ArrayHash Table
#1
Recommended
#1371MediumFrequency: 100%

Minimum Remove to Make Valid Parentheses

Asked at Meta
StringStack
#2
Recommended
#146MediumFrequency: 100%

LRU Cache

Asked at Apple
Hash TableLinked ListDesignDoubly-Linked List
#3
Recommended
#833HardFrequency: 100%

Bus Routes

Asked at Uber
ArrayHash TableBreadth-First Search
#4
Recommended
#716HardFrequency: 100%

Max Stack

Asked at LinkedIn
StackLinked ListDesignDoubly-Linked ListOrdered Set
#5
Recommended
#286MediumFrequency: 100%

Walls and Gates

Asked at DoorDash
ArrayBreadth-First SearchMatrix
#6
Recommended
#68HardFrequency: 100%

Text Justification

Asked at Airbnb
ArrayStringSimulation
#7
Recommended
#1538MediumFrequency: 100%

Maximum Points You Can Obtain from Cards

Asked at Flipkart
ArraySliding WindowPrefix Sum
#8
Recommended
#750HardFrequency: 100%

Contain Virus

Asked at Flipkart
ArrayDepth-First SearchBreadth-First SearchMatrixSimulation
#9
Recommended
#6MediumFrequency: 100%

Zigzag Conversion

Asked at PayPal
String
#10
Recommended
#362MediumFrequency: 100%

Design Hit Counter

Asked at Databricks
ArrayBinary SearchDesignQueueData Stream
#11
Recommended
#752MediumFrequency: 97.6%

IP to CIDR

Asked at Databricks
StringBit Manipulation
#12
Recommended
#200MediumFrequency: 97.3%

Number of Islands

Asked at TikTok
ArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix
#13
Recommended
#408EasyFrequency: 96.8%

Valid Word Abbreviation

Asked at Meta
Two PointersString
#14
Recommended
#364MediumFrequency: 95.4%

Nested List Weight Sum II

Asked at LinkedIn
StackDepth-First SearchBreadth-First Search
#15
Recommended
#269HardFrequency: 95.2%

Alien Dictionary

Asked at Uber
ArrayStringDepth-First SearchBreadth-First SearchGraph TheoryTopological SortDirected Acyclic Graph
#16
Recommended
#680EasyFrequency: 95.1%

Valid Palindrome II

Asked at Meta
Two PointersStringGreedy
#17
Recommended
#1306EasyFrequency: 94.7%

Minimum Absolute Difference

Asked at PayPal
ArraySorting
#18
Recommended
#1549MediumFrequency: 94.4%

Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit

Asked at Uber
ArraySliding WindowQueueHeap (Priority Queue)Ordered SetMonotonic Queue
#19
Recommended
#432HardFrequency: 93.8%

All O`one Data Structure

Asked at LinkedIn
Hash TableLinked ListDesignDoubly-Linked List
#20
Recommended

All Interview Questions

Browse questions by company and difficulty level

Topics & Algorithms

Practice by specific algorithm and data structure topics

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