Nextdoor Software Engineer Interview Questions
The questions to prepare for a Nextdoor Software Engineer interview. Questions from real interview reports rank first. Updated weekly.
Find the longest substring with all unique characters using a sliding window.
NextdoorMerge two sorted singly linked lists into one sorted list by relinking existing nodes.
NextdoorDesign a URL shortening service that routes, ranks, and monitors links at scale.
NextdoorAssesses system design ability across client and server components.
NextdoorEvaluate the execution trade-offs between monoliths and microservices and explain how you would choose the right approach.
NextdoorTests your hands-on experience designing, building, or operating microservices.
NextdoorApproach for migrating data between databases with validation, idempotent loads, and schema change handling.
NextdoorTests ability to diagnose bottlenecks and apply indexing, query rewriting, and execution-plan driven tuning.
NextdoorSign up to see every question
Create a free account to unlock this list and practice real interview questions.
Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.
Meta
Spotify
Meta ITUse CTEs, joins, and date filtering to calculate 30-day retention by signup cohort from login and feature usage data.
Curefit
ReachMobi
IndeedCalculate the sum of integers from 1 to 1,000,000 using PostgreSQL aggregation and filtering.
Virtu Financial