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Companies / HubSpot

HubSpot interview questions

Explore questions associated with HubSpot. Review the source details, then use the workspace for code, notes, and diagrams.

9 questions in the library. A source association does not guarantee a future interview question.

Behavioral and leadership · Coding · Machine learning · System design

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HubSpot interview questions | SysRound

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9 questions

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CodingDifficulty not specifiedLeetCode 277
Find the Celebrity
Given n people labeled 0 to n-1 and an API knows(a, b) that returns true if person a knows person b, find the celebrity —…
Companies: HubSpot, LinkedIn
Last reported Oct 2026
Open workspace
System designDifficulty not specified
Design a Weather System
Design a weather monitoring system that can collect data from thousands of distributed sensors and provide weather information to users.
Companies: HubSpot, Amazon
Last reported Jun 2026
Open workspace
System designDifficulty not specified
Design Netflix/Video Streaming Platform
Design a video streaming platform like Netflix that supports video playback across multiple devices (mobile, web, smart TVs) with seamless resume functionality, subscription…

Companies: HubSpot, Amazon, Google, Meta +2

Last reported May 2026

CodingDifficulty not specified

Evaluate and Simplify Mathematical Expressions

Design an algorithm to parse, evaluate, and simplify mathematical expressions. The expressions may contain arithmetic operators (+, -, *, /), variables, and parentheses. Handle…

Companies: HubSpot, Google, Meta

Last reported Feb 2026

CodingDifficulty not specified

Evaluate Nested ADD/SUBTRACT Expression

Given a nested mathematical expression containing addition and subtraction operations with constants and variables, along with a variable mapping, evaluate the expression and…

Companies: HubSpot

Last reported Dec 2025

CodingDifficulty not specified

Polish Notation Evaluator

Implement a function to evaluate mathematical expressions written in Polish notation (prefix notation), where operators precede their operands. The function should handle basic…

Companies: HubSpot

Last reported Dec 2025

Behavioral and leadershipDifficulty not specified

Tell me about your job and role

Companies: HubSpot, Meta, OpenAI

Last reported Nov 2025

System designMedium

Design a weather app

Location-based weather reads over changing external data: geographic reuse, late observations, forecast versions, and honest freshness during outages.

Companies: HubSpot, Amazon, Chime, Klaviyo +2

caching · data-ingestion · data-versioning · event-time

Start AI interview Study workspace

Machine learningMedium

Handling Class Imbalance: Metrics, Resampling, Class Weights and Decision Thresholds

Companies: HubSpot

Model Evaluation · Supervised Learning