Karat Interview Questions

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

50questions

~11htotal time

Track your progressSign up free to work through all 50 questions and resume where you left off.

Start practicing free →

CodingStart here. 26 questions · ~349 min

O(1) Insert Delete Random SetEasy

Practice

Implement a set-like structure using an array and hash map to support insert, delete, and random access in average O(1) time.

Hash TablesArraysData Structures

Karat

More Coding questions with a free account

System Design5 questions · ~67 min

Explaining Complex React StateHard

Explain a complex React component, including its state model, data flow, tradeoffs, and testing approach.

challengesclient-sidereact

Karat

More System Design questions with a free account

Execution4 questions · ~54 min

Rate-Limiting API DesignMedium

Tests API design, correctness, and practical handling of throttling behavior.

Trade-offsSuccess Criteriaapi design

Karat

More Execution questions with a free account

Behavioral & Leadership7 questions · ~94 min

More Behavioral & Leadership questions with a free account

More topics8 questions · ~107 min

Review Code for Style and SecurityMedium

Explain a practical code review that identified style, security, and best-practice issues, including validation and remediation.

best practicesleast privilegeapplication security

Karat

Bandwidth vs LatencyMedium

Compare bandwidth and latency, and explain how each changes loading time, responsiveness, and web performance decisions.

networking basicsNetworkingWeb Platform

Karat

Async Fetching and Error StatesMedium

Tests your resilience patterns for loading, retries, and user-friendly error handling.

error handlingasynchronousproduction

Karat

Real-Time Code Execution ScaleHard

Tests system design for scalable execution pipelines and reliable test validation under load.

InfrastructureToolsQuality

Karat

Design a Camera AppHard

Evaluates product sense, requirements definition, and prioritization for a consumer app experience.

design

Karat

Sign up to see every question

Create a free account to unlock this list and practice real interview questions.

Get my prep plan

The finish line: interview-readyComplete all 50 questions to finish this plan.