PracHub
QuestionsExperienceLearningGuidesInterview Prep
Visa Tools

Visa Tools

Visa Sponsors

Find employers with sponsorship filings

H-1B Odds Calculator

Explore your lottery selection odds

Visa Bulletin

Monthly green-card priority dates

PracHub

Master your tech interviews with 18,000+ real questions from top companies.

Product

  • Questions
  • Learning Tracks
  • Interview Guides
  • Resources
  • Green Card Tracker
  • Premium
  • Practice with AI agents
  • For Universities
  • Careers

Browse

  • By Company
  • By Role
  • By Category
  • Topic Hubs
  • Interview Experiences
  • SQL Questions
  • Blind 75
  • AI Coding Questions
  • Compare Platforms
  • Discord Community

Support

  • support@prachub.com

Legal

  • Privacy Policy
  • Terms of Service
  • About Us

© 2026 PracHub. All rights reserved.

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
Microsoft logo
Microsoft
Medium
Software Engineer

Find lowest common ancestor in tree

You are given the root of a binary search tree (BST) and two distinct nodes p and q that are guaranteed to exist in the tree. Task (BST case): - Find ...

Coding & Algorithms
8
0
78 people solved
Nov 19, 2025
Meta logo
Meta
Medium
Data Scientist

Compute cohort GMV and payer rate with edge cases

You are given the following schema (timestamps are UTC): users(user_id INT, country STRING, created_at TIMESTAMP) events(user_id INT, event_ts TIMESTA...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis
15
0
126 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Design an Event Booking System

This question evaluates system architecture, distributed systems, data modeling, concurrency control for seat inventory, transactional integrity for b...

System Design
4
0
79 people solved
Feb 22, 2026
Tubi logo
Tubi
Medium
Data Scientist

Compute daily net users from event logs

Given an event log, write SQL to compute, for the target date 2025‑09‑01 ("today"), the counts of new users, retained users, churn users, and net user...

Data Manipulation (SQL/Python)
5
0
38 people solved
Oct 13, 2025
Google logo
Google
Medium
Data Scientist

Analyze data duplication effects in linear regression

OLS With Duplicated Observations: Estimator, Variance, and Inference Pitfalls Context: You have the linear model y = Xβ + ε with full-rank X ∈ ℝ^{n×p}...

Statistics & MathRegression & Statistical ModelingHypothesis Testing
29
0
336 people solved
Oct 13, 2025
TikTok logo
TikTok
Hard
Data Scientist

Design Real-Time Credit Card Fraud Detection System

Design a Real-Time Credit-Card Fraud Detection System You are designing a real-time fraud detection system for an online payments platform that proces...

Machine LearningML System DesignSupervised Learning
29
0
131 people solved
Jul 12, 2025
Squarepoint logo
Squarepoint
Medium
Data Scientist

Maximize revenue from inventory sales

Problem A store has n different products. For each product i (0-indexed), you are given an integer quantity[i] representing how many units of that pro...

Coding & Algorithms
12
0
122 people solved
Dec 8, 2025
Pinterest logo
Pinterest
Medium
Machine Learning Engineer Locked

Solve prefix, array, and string problems

This set of problems evaluates proficiency in string and array algorithm design—covering prefix search, subsequence matching, and maximal-area computa...

Coding & Algorithms
8
0
61 people solved
Apr 9, 2025
Cognitiv logo
Cognitiv
Hard
Software Engineer Locked

Reason About Duplicate Data and Scaling in Spark

Explain how to define and remove duplicate data in Spark, then scale the pipeline as volume and traffic increase. Candidates must translate business i...

Software Engineering Fundamentals
4
0
54 people solved
Jul 28, 2026
MongoDB logo
MongoDB
Hard
Software EngineerSenior+

Design a scalable resume search system

Design a scalable resume search system System Design: Resume Search Platform Context A recruiting company needs a platform where applicants can upload...

System DesignSearch & Feed SystemsSystem Design Fundamentals
14
0
279 people solved
Jul 15, 2025
Amazon logo
Amazon
Medium
Software Engineer Locked

Leaf Domain Cumulative Scores

This question evaluates a candidate's ability to model hierarchical string data and aggregate values along a tree structure, a common pattern in codin...

Coding & Algorithms
4
0
41 people solved
Jun 23, 2026
Upstart logo
Upstart
Easy
Data Scientist

Assess Probability of Heads in Coin Tosses

Assess Probability of Heads in Coin Tosses Probability with Coin Tosses and the Normal Distribution Context Onsite data scientist screening question a...

Statistics & MathProbability
33
0
120 people solved
Aug 4, 2025
Dropbox logo
Dropbox
Medium
Product Manager

Driverless Vehicle Hire: Renter Journey, Feature Priorities and Success Metrics

Imagine a rental service whose cars drive themselves. Design the experience of renting one of these cars, from booking it to giving it back. Choose th...

Product Design & StrategyProduct SenseMetrics & KPIs
1
0
9 people solved
Dec 21, 2025
Two Sigma logo
Two Sigma
Medium
Data Scientist Locked

Evaluate Piecewise Linear Function

This question evaluates understanding of piecewise linear interpolation, numerical reasoning, and the ability to handle ordered 2D point data and edge...

Coding & Algorithms
6
0
68 people solved
Mar 3, 2026
Instacart logo
Instacart
Medium
Backend EngineerSenior+ AI

Design Idempotent Due-Date and Hold Notifications

Design Idempotent Due-Date and Hold Notifications Extend a library-management system with two notification workflows: 1. A patron receives a notificat...

System Design
7
0
79 people solved
May 2, 2026
TikTok logo
TikTok
Medium
Software Engineer

Design LRU cache with O(1) operations

Design and implement an in-memory cache that evicts the least recently used entry when capacity is reached. Support get(key) and put(key, value) in O(...

Coding & Algorithms
5
0
47 people solved
Sep 6, 2025
Squarepoint logo
Squarepoint
Hard
Data Scientist Locked

Analyze expectations, correlations, and investment strategies

This multipart Machine Learning question evaluates probabilistic expectation and stopping-time reasoning, combinatorial expectations in random permuta...

Machine LearningProbabilityTrading Systems
14
0
121 people solved
Nov 7, 2025
Amazon logo
Amazon
Medium
Software EngineerIntern

Explain a Project Problem That Required In-Depth Analysis

Choose a project from your resume that included a problem requiring in-depth analysis. Explain the project, the problem you investigated, how your ana...

Behavioral & LeadershipProject Deep DiveAmbiguity & Decision Making
2
0
30 people solved
Jan 10, 2026
Amazon logo
Amazon
Medium
Software Engineer

Design an Extensible Cinema Ticket Pricing Engine

Interview Prompt Design a ticket-pricing engine where a movie format supplies a base price, showtime and seat tier each supply a multiplier, and zero ...

Software Engineering Fundamentals
3
0
25 people solved
May 1, 2026
Walmart Labs logo
Walmart Labs
Medium
Software Engineer Locked

Check whether brackets are balanced

This question evaluates a candidate's competency in string processing and bracket-matching concepts, testing familiarity with linear-time algorithms a...

Coding & Algorithms
9
0
69 people solved
Mar 1, 2026
Previous1...524525526...929Next
Popular Categories
SQLBlind 75
Daily Quest

Sign in to earn XP for every problem you solve.

Choose your next challenge

All learning

Blind 75

75 free coding problems to build your foundations, with hints, explanations, and a progress checklist.

Arrays · Graphs · Dynamic programming

Explore Blind 75

ML System Design

Work through the decisions behind machine learning systems, from data to serving.

Data · Models · Evaluation

Explore the course

System Design Interview

Practice reasoning about architecture, scale, and the tradeoffs that shape a system.

Architecture · Scale · Tradeoffs

Explore the course

Explore by company

All companies
  • Meta
  • Google
  • Amazon
  • Apple
  • Microsoft
  • Netflix
  • Capital One
  • TikTok
  • DoorDash
  • Uber
  • Coinbase
  • Airbnb
  • LinkedIn
  • Salesforce
  • Snapchat
  • Spotify
  • PayPal
  • Lyft
  • Pinterest
  • Anthropic
  • OpenAI
  • Databricks
  • Rippling
  • Jane Street

Explore by role

  • Data Scientist
  • Software Engineer
  • Machine Learning Engineer
  • Product Manager
  • Data Engineer
  • Data Analyst
  • Frontend Engineer
  • Backend Engineer
  • Site Reliability Engineer
  • Technical Program Manager

Explore by category

  • Blind 75
  • Coding & Algorithms
  • System Design
  • Machine Learning
  • ML System Design
  • SQL & Python
  • Analytics & Experimentation
  • Behavioral & Leadership
  • Statistics & Math
  • Product / Decision Making
  • Product Design & Strategy
  • SWE Fundamentals

Popular interview guides

  • Meta SWE
  • Meta DS
  • Meta PM
  • Google SWE
  • Google DS
  • Google MLE
  • Amazon SWE
  • Amazon DS
  • Amazon DE
  • Apple SWE
  • Apple MLE
  • Microsoft SWE
  • Microsoft DS
  • TikTok SWE
  • TikTok DS
  • Uber SWE
  • Uber DS
  • DoorDash SWE
  • DoorDash DS
  • Airbnb SWE
  • Airbnb DS
  • LinkedIn SWE
  • LinkedIn DS
  • Netflix SWE
  • Coinbase SWE
  • Capital One DS
  • OpenAI SWE
  • Anthropic SWE

Popular question categories

  • Blind 75
  • Meta Coding
  • Google System Design
  • Amazon Coding
  • Meta Analytics
  • Google ML
  • Amazon System Design
  • Capital One SQL
  • TikTok ML
  • Meta SQL
  • Uber Analytics
  • DoorDash Coding
  • Google Coding
  • Netflix System Design
  • Airbnb Analytics
  • LinkedIn SQL