PracHub
QuestionsExperienceLearningGuidesInterview PrepGreen Card
PracHub

Master your tech interviews with 10,000+ real questions from top companies.

Product

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

Browse

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

Support

  • support@prachub.com
  • (916) 541-4762

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
12.0k
Companies
570
Updated
10.05.2026
12.0k Questions 570 Companies10.05.2026
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
Uber logo
Uber
Hard
Software Engineer

Design a Real-Time Top-K Ranking System

Design an object-oriented, real-time Top-K ranking system. The system continuously receives score updates for a large set of entities — for example us...

Software Engineering FundamentalsData Structure DesignConcurrency
438
2
5735 people solved
May 2, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer

Explain a Difficult Technical Decision and Its Implementation

Choose a project you know deeply and explain a difficult technical decision from it. Compare the alternatives you considered, describe the implementat...

Behavioral & LeadershipProject Deep Dive
1
0
15 people solved
Sep 12, 2026
Medium
Software Engineer

Design a Task Scheduler

Design a service that schedules tasks for execution. Explain how tasks become due, how workers claim them, and how the system handles failures without...

System DesignJob Scheduling & WorkflowsDistributed Coordination
1
0
13 people solved
Sep 17, 2026
Tradedesk logo
Tradedesk
Medium
Frontend Engineer

Selection-State Class for an Infinite-Scroll Checkbox List with Select All

Write a class that handles the data for a list rendered with infinite scrolling. Every row in the list has a checkbox, and a Select All checkbox sits ...

Software Engineering FundamentalsState Management
2
0
20 people solved
Sep 15, 2026
Deshaw logo
Deshaw
Medium
Software Engineer

Compare Linux Containers and Virtual Machines

Explain the difference between containers and virtual machines. Use conventional Linux process containers and hardware-virtualized VMs as your baselin...

Software Engineering FundamentalsContainers & OrchestrationOperating Systems
2
1
29 people solved
Aug 25, 2026
DoorDash logo
DoorDash
Medium
Data Scientist Locked

Diagnose Why Delivered Food Arrives Cold

Work through a data science case on why delivered food arrives cold. Define a reliable complaint metric, decompose the order timeline, separate mix sh...

Analytics & ExperimentationMetric Diagnostics
62
0
767 people solved
Jul 19, 2026
Pinterest logo
Pinterest
Hard
Software Engineer

Keep Merchant Addresses, Social Followers, and Wiki Facts Up to Date

Design a system that can keep merchant information updated, including address, follower counts on social platforms, and founding year and country extr...

System DesignSystem Design Fundamentals
1
0
24 people solved
Aug 28, 2026
Lyft logo
Lyft
Medium
Software EngineerSenior+

Design a Globally Versioned Key-Value Store

Design a versioned key-value store with a version number shared globally across keys. A historical read uses get(key, version) to retrieve the value a...

Software Engineering FundamentalsData Structure DesignBinary Search
6
0
52 people solved
Sep 8, 2026
Amazon logo
Amazon
Medium
Machine Learning Engineer

Evaluate a Two Percent CTR Lift in Music Recommendations

An experiment on a music recommendation system reports a 2 percent increase in click-through rate. What would you check before deciding that the chang...

Analytics & ExperimentationExperiment Analysis & Readout
2
0
22 people solved
Sep 11, 2026
DoorDash logo
DoorDash
Medium
Software Engineer Locked

Simulate Constant-Time Random Courier Selection

Maintain a changing set of courier IDs with expected constant-time add, remove, and deterministic random-pick operations. The challenge probes coordin...

Coding & Algorithms
31
0
209 people solved
Aug 4, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Simulate Threshold Infection Efficiently

Compute infection times on a grid where healthy cells change in synchronous rounds after reaching an infected-neighbor threshold. Use incremental neig...

Coding & AlgorithmsGrids & MatricesSimulation & State Machines
20
0
224 people solved
Jul 8, 2026
Instacart logo
Instacart
Medium
Software EngineerSenior+

Reserve Cart Inventory Without Overselling

Design an inventory system that reserves an item when a user adds it to a shopping cart. The system must prevent overselling under concurrent requests...

System DesignTransactions & IsolationConcurrency
4
0
29 people solved
Sep 7, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer

Debug MiniGPT and Backpropagate Matmul

This is a hands-on PyTorch screen with two independent tasks. You share a code editor with the interviewer and are expected to run the code, read trac...

Machine LearningML CodingTransformers & Attention
133
0
1346 people solved
Apr 3, 2026
Figma logo
Figma
Medium
Software Engineer Locked

Design Permission-Aware Retrieval for Design Files

Design search for design files and assets using short text queries, structured filters, and permissions delegated by the initiating user. The system-d...

System DesignSearch & Feed SystemsAuthentication & Authorization
12
0
216 people solved
Jul 21, 2026
Apple logo
Apple
Medium
Software Engineer Locked

Find the K Closest Pairs in a Sorted Array

Implement k_closest_pairs(nums, k) for a strictly increasing sorted array. Work through the function contract, boundary cases, correctness argument, a...

Coding & AlgorithmsHeaps & Priority Queues
13
2
216 people solved
Aug 9, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Multiset with O(1) Insert, Remove, and Count-Weighted Random Pick

Design a data structure that holds a collection of integers in which duplicates are allowed, and that supports each of the following operations in ave...

Software Engineering FundamentalsData Structure Design
0
0
8 people solved
Sep 28, 2026
Headlands logo
Headlands
Medium
Data Scientist

Minimum Character Replacements So No Two Adjacent Characters Are Equal

Given a string s of lowercase English letters, one operation replaces the character at any single position with any lowercase English letter. Return t...

Coding & AlgorithmsGreedy
2
0
26 people solved
Aug 30, 2026
Glean logo
Glean
Medium
Data Scientist

Product Case: Define Success Metrics for a Product, Using Enterprise Search as Example

In a hiring-manager interview for a data scientist role, one question was a product case: how would you measure the success of a product? The report d...

Analytics & ExperimentationMetrics & KPIs
0
0
7 people solved
Sep 30, 2026
Voleon logo
Voleon
Medium
Quantitative Researcher

Row and Column Sums: Square Matrices and Nilpotence

A finite matrix has every row sum equal to 1 and every column sum equal to 1. Must the matrix be square? If so, can it be nilpotent? Constraints & Ass...

Statistics & Math
4
0
46 people solved
Jun 27, 2026
AMD logo
AMD
Medium
Software Engineer

Evaluate Agents That Generate or Optimize Kernels and Compiler Code

Evaluate the idea of using an agent to generate or optimize GPU kernels and compiler transformations. What capabilities would it need, how would you v...

ML System DesignAI AgentsSandboxing & Isolation
2
0
15 people solved
Sep 14, 2026
Previous1...525354...599Next
Popular Categories
SQL
Daily Quest

Sign in to earn XP for every problem you solve.

Explore by company

MetaGoogleAmazonAppleMicrosoftNetflixCapital OneTikTokDoorDashUberCoinbaseAirbnbLinkedInSalesforceSnapchatSpotifyPayPalLyftPinterestAnthropicOpenAIDatabricksRipplingJane StreetStripe

Explore by role

Data ScientistSoftware EngineerMachine Learning EngineerProduct ManagerData EngineerData AnalystFrontend EngineerBackend EngineerSite Reliability EngineerTechnical Program Manager

Explore by category

Coding & AlgorithmsSystem DesignMachine LearningML System DesignSQL & PythonAnalytics & ExperimentationBehavioral & LeadershipStatistics & MathProduct / Decision MakingProduct Design & StrategySWE Fundamentals

Popular interview guides

Meta SWEMeta DSMeta PMGoogle SWEGoogle DSGoogle MLEAmazon SWEAmazon DSAmazon DEApple SWEApple MLEMicrosoft SWEMicrosoft DSTikTok SWETikTok DSUber SWEUber DSDoorDash SWEDoorDash DSAirbnb SWEAirbnb DSLinkedIn SWELinkedIn DSNetflix SWECoinbase SWECapital One DSOpenAI SWEAnthropic SWE

Popular question categories

Meta CodingGoogle System DesignAmazon CodingMeta AnalyticsGoogle MLAmazon System DesignCapital One SQLTikTok MLMeta SQLUber AnalyticsDoorDash CodingGoogle CodingNetflix System DesignAirbnb AnalyticsLinkedIn SQL