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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

Showing 20 results
Meta logo
Meta
Medium
Product Manager

Product Design: Helping People Find and Hire Contractors Through Meta's Apps

You are a product manager at Meta. Design a product that helps people who need to hire a contractor. Explain which hiring situations and users you wou...

Product Design & StrategyProduct SenseGrowth & Monetization
1
0
12 people solved
Jul 19, 2026
Pinterest logo
Pinterest
Easy
Data Scientist

Write SQL for top categories and highly active users

You are given three tables: 1) impression Event-level table of user impressions. - impression_id BIGINT (PK) - user_id BIGINT (FK → user.user_id) - pi...

Data Manipulation (SQL/Python)SQL
77
3
524 people solved
Dec 5, 2025
OpenAI logo
OpenAI
Medium
Product Manager

Hardware Product Sense: A Dedicated Device That Brings OpenAI Models Into Hotels

As a product manager at OpenAI, propose a device that brings OpenAI's models into shared public places, a hotel for example. What would you build, and...

Product Design & StrategyProduct SenseAI Product Management
1
0
12 people solved
Aug 19, 2026
Point72 logo
Point72
Medium
Data Scientist Locked

Explain How L1 and L2 Regularization Change Linear-Model Coefficients

Review a machine learning interview question comparing ordinary least squares with L1 and L2 regularization. The prompt focuses on coefficient behavio...

Machine LearningRegression & Statistical ModelingML Fundamentals
9
0
111 people solved
Jun 12, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Design an Online Development Box

Design an online development box: a remote workspace where a developer can edit files, run development tools, and reconnect to the same project from a...

System DesignSystem Design FundamentalsSandboxing & Isolation
2
0
26 people solved
Jul 16, 2026
Netflix logo
Netflix
Hard
Software EngineerSenior+

Compute Earliest Completion Times

You are given n tasks numbered from 0 to n - 1. Each task i has a positive duration duration[i]. You are also given a list of prerequisite relationshi...

Coding & Algorithms
9
0
76 people solved
Apr 5, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

How to stream a large file to 1000 hosts fastest

This question evaluates system design and distributed-systems skills, especially bandwidth and bottleneck analysis, replication and pipelining trade-o...

System DesignFile & Media StorageSystem Design Fundamentals
268
1
2610 people solved
Mar 1, 2026
Amazon logo
AmazonGoogleBloomberg

Also asked at Bloomberg, Meta, Microsoft, Uber

Medium
Software Engineer

Find Vertices from Which Every Walk Terminates

Problem In the directed graph, a terminal vertex has no outgoing edges. A vertex is safe when every path starting there eventually terminates instead ...

Coding & AlgorithmsGraphs
0
0
12 people solved
Brex logo
Brex
Medium
Software Engineer

Build AI-Assisted Full-Stack Transactions App

Build a minimal full-stack app for monetary transactions This is the "AI coding" round: using an AI coding tool of your choice (e.g., Cursor), build a...

System DesignPayments & LedgersAI-Assisted Development
85
1
938 people solved
Aug 14, 2025
Luma AI logo
Luma AI
Medium
Software Engineer

Build a System to Manage Prompts and Model Behavior in Production

This prompt is one of five offered in a take-home for a software engineering role on an AI product team. The candidate picks one prompt; across the se...

ML System DesignSystem Design FundamentalsLLM Evaluation
2
0
18 people solved
Sep 17, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design an Online Chess Platform: Elo Matchmaking, WebSocket Moves, Game Clocks

Design an online chess platform: match players of similar Elo rating quickly, deliver moves in real time over WebSocket connections, and enforce fair ...

System DesignMultiplayer Game SystemsReal-Time Systems
4
0
53 people solved
Sep 20, 2026
Robinhood logo
Robinhood
Hard
Software Engineer

Count Unique Dependents in a Referral DAG

Given named nodes and a dependency DAG, compute how many unique nodes directly or indirectly depend on each node. An edge [a,b] means a depends on b, ...

Coding & AlgorithmsGraphsDynamic Programming
20
0
140 people solved
Apr 14, 2026
Capital One logo
Capital One
Hard
Data Scientist

Evaluate launching a vegan burger

Scenario You run a fast-food burger chain, and a rival has just launched a hit vegan burger. The question on the table: should you add a vegan burger ...

Analytics & ExperimentationBusiness Case AnalysisExperiment Design (A/B Testing)
69
0
623 people solved
Oct 13, 2025
Google logo
GoogleAmazonMicrosoft
Easy
Software Engineer

Write an Integer Using Base Seven Digits

Problem Return the base-seven string for num, using digits 0 through 6 and a leading minus sign only for negative values. Zero is represented by "0". ...

Coding & AlgorithmsMath & Number Theory
1
0
15 people solved
OpenAI logo
OpenAI
Medium
Software Engineer

Design a Highly Available Conversational AI Service

Design a Highly Available Conversational AI Service Design a conversational AI service that accepts a user message and streams a generated response. B...

System DesignSystem Design FundamentalsReal-Time Systems
16
0
206 people solved
Jul 17, 2026
Google logo
Google
Medium
Software Engineer

Lowest-Bid Auction Service with Bounded Prices and Auction Removal

Design and implement a small auction service in which the lowest bid wins and which must report the current lowest bid quickly. It was described as a ...

Software Engineering FundamentalsData Structure DesignHeaps & Priority Queues
1
0
15 people solved
May 26, 2026
Atlassian logo
Atlassian
Medium
Software Engineer

Design an access control system (RBAC + resource-based)

Design an authorization system that supports both: - Role-Based Access Control (RBAC): users/groups have roles (e.g., Admin, Editor, Viewer) that gran...

System DesignAuthentication & AuthorizationAPI Design
32
1
265 people solved
Jan 5, 2026
Tekion logo
Tekion
Medium
Software EngineerSenior+

Find an Optimal Strategy for an Even-Row Coin Game

A and B play a game with an even number of coins arranged in a row. They alternate turns, with A moving first. On each turn, the player takes one coin...

Statistics & MathDynamic ProgrammingMath & Number Theory
7
0
49 people solved
Sep 10, 2026
Apple logo
Apple
Medium
Product Manager

Go or No-Go on a Social Layer for iMessage, and Scoping the First Bet

You are a product manager working on Messages at Apple. iMessage is Apple's messaging service, built into the Messages app on iPhone, iPad and Mac. Re...

Product Design & StrategyProduct StrategyMetrics & KPIs
1
0
11 people solved
Sep 16, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Debug round-robin, DashMap, and simple cache

You are given a service that routes requests to a list of nodes, each marked as either available or unavailable. The pickNode() function is intended t...

Coding & AlgorithmsDebuggingData Structure Design
129
0
998 people solved
Aug 7, 2025
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