Nextdoor Interview Questions
Master your tech interview with our curated database of real questions from top companies.
Describe CAP, distributed systems, multithreading experience
CAP Theorem, Distributed Systems Design Decisions, and Multithreading Context Provide a structured answer that both explains the concepts and shows ho...
Build an end-to-end ML classification pipeline
End-to-End Tabular Classification Pipeline (Python) Context You are given a tabular dataset in a CSV file and asked to build an end-to-end machine lea...
Implement ordering with dependency constraints
You are given n items labeled 0..n−1 and a list of precedence constraints edges[i] = [u, v] meaning u must appear before v. Return a valid ordering of...
Which culture principle resonates and why
Culture-Fit Reflection: Principle, Evidence, and Thoughtful Critique Prompt After watching the company’s culture-fit video: 1. Select one specific pri...
Answer HR motivation and project experience questions
You are interviewing for a technical role (e.g., software engineer, data scientist, or research engineer) at a tech company. In an HR screen, the recr...
Build and evaluate a Colab classification model
End-to-End Tabular Classification Workflow in Google Colab You are asked to design and implement a complete classification workflow for a tabular data...
Implement version string comparator with extensions
Implement a function compareVersions(a, b) that compares two software version strings. Each version consists of dot-separated numeric components (e.g....
Implement and use a version comparator
You are given up to 100,000 version-like identifiers (e.g., "1.0", "01.2.0", "2.0.0-alpha", "1.10.3"). Implement compare(a, b) that orders identifiers...
Build an end-to-end ML classification pipeline
Build a Reproducible End-to-End Binary Classification Pipeline for a CSV Dataset Context You are given a single CSV file that fits in memory. The data...
Describe resume highlights and confirm logistics
Behavioral: Walk Through 2–3 ML Projects + Logistics Context You are interviewing for a Machine Learning Engineer role in a technical screen that emph...