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 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
  • 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
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
DoorDash logo
DoorDash
Medium
Software Engineer

Implement a gig worker payout calculator

Implement a payout calculator for gig workers (e.g., delivery drivers). Given a list of completed orders with timestamps, distances, and tips, plus po...

Data Manipulation (SQL/Python)
3
0
66 people solved
Sep 6, 2025
Abnormal Security logo
Abnormal Security
Hard
Software Engineer

Design a scalable photo deduplication service

Design a scalable photo deduplication service System Design: Productionizing Duplicate-Photo Removal at Scale Context Design a production system that ...

System DesignFile & Media StorageBatch & Stream Processing
18
0
209 people solved
Jul 16, 2025
Snowflake logo
Snowflake
Medium
Software Engineer

Find first error and propagate failures

You are given a chronological log history where each entry is a string prefixed with one of [Info], [Warn], or [Error]. Two invariants hold: ( 1) once...

Coding & Algorithms
9
1
75 people solved
Sep 6, 2025
Databricks logo
Databricks
Medium
Software EngineerSenior+ Locked

Explain storing files to disk with concurrency

This question evaluates systems programming concepts (OS I/O, page cache, fsync semantics) and Java concurrency mechanisms (thread-safety, synchroniza...

Software Engineering FundamentalsConcurrencyOperating Systems
21
0
396 people solved
Oct 10, 2025
xAI logo
xAI
Medium
Software Engineer Locked

Explain process vs thread and memory-sharing risks

This question evaluates a candidate's understanding of OS concurrency fundamentals, specifically the distinction between processes and threads, memory...

Software Engineering FundamentalsOperating SystemsConcurrency
11
0
130 people solved
Oct 27, 2025
Meta logo
Meta
Hard
Software Engineer

Design an Online Game Leaderboard

Question Design the backend system for an online game's leaderboard. The system should support: 1. Recording and updating player scores from game sess...

System DesignMultiplayer Game SystemsCaching
19
0
166 people solved
Apr 27, 2026
Citadel logo
Citadel
Hard
Data Scientist

Sort a nearly sorted array

Given an array of length \(n\) in which every element is at most \(k\) positions away from its location in the fully sorted order, design an algorithm...

Coding & AlgorithmsHeaps & Priority QueuesSorting
8
0
146 people solved
Jan 30, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Discuss challenges and cross-functional collaboration

Question Tell me about your most challenging project. Walk me through it end to end and be ready to go deep on the technical and the organizational si...

Behavioral & LeadershipProject Deep DiveAmbiguity & Decision Making
10
0
155 people solved
Sep 6, 2025
Coinbase logo
Coinbase
Medium
Software Engineer

Implement bank balance operations

Question Design and implement a Bank account class that supports the operations Deposit(amount), Withdraw(amount), and CashBack(percent). Ensure balan...

Coding & Algorithms
8
0
101 people solved
Aug 4, 2025
DoorDash logo
DoorDash
Medium
Machine Learning Engineer

How would you prevent wrong items in deliveries?

Behavioral / Product-Process Scenario You work on a food delivery platform. Customers sometimes receive the wrong items (restaurant packed incorrectly...

Behavioral & LeadershipProduct Design & ImprovementMetric Diagnostics
7
0
132 people solved
Oct 17, 2025
Medium
Software Engineer

Explain How You Use and Validate AI at Work

Describe how you use AI tools in your work and how you verify their output. Give a concrete example, including a case where the output needed correcti...

Behavioral & LeadershipAI-Assisted Development
0
0
6 people solved
Sep 17, 2026
Ixana logo
Ixana
Hard
Software Engineer

Schedule batched register operations optimally

Problem You are given a text file that describes batches of register operations (reads and writes) on integer-indexed registers. Your task is to sched...

Coding & AlgorithmsIntervals & SchedulingParsing & Interpreters
20
0
154 people solved
Nov 13, 2025
Trexquant logo
Trexquant
Medium
Software Engineer

Explain C++ default constructor generation rules

You are given a C++ class type T. 1. When will the compiler implicitly declare a default constructor for T? 2. When will the implicitly-declared defau...

Software Engineering FundamentalsProgramming Languages
6
0
109 people solved
Sep 1, 2025
Asana logo
Asana
Medium
Software Engineer Locked

Design an Extensible Animal-Chess Game Engine

Design an extensible object-oriented engine for a turn-based animal-chess game whose concrete rules arrive separately. Separate immutable state, move ...

Software Engineering FundamentalsLow-Level Design (OOP)
15
0
231 people solved
Jul 16, 2026
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Evaluate Architecture and Capacity Trade-offs

This multi-part question evaluates system architecture trade-offs, capacity and storage planning, security-aware component design, and document dedupl...

Software Engineering Fundamentals
2
0
37 people solved
Nov 10, 2025
Applied Intuition logo
Applied Intuition
Hard
Software Engineer

Track simulations and report timeouts

You are implementing a monitoring component for many concurrent simulations. Each simulation produces a stream of event objects of the form: - sim_id ...

Coding & Algorithms
5
0
69 people solved
Dec 8, 2025
TikTok logo
TikTok
Easy
Data Scientist

Write SQL for TikTok Live creator metrics

You are analyzing TikTok Live sessions and their engagement. Tables live_room Each row is a Live session (“room”) launched by a creator. | column | ty...

Data Manipulation (SQL/Python)SQL
20
0
164 people solved
Oct 9, 2025
Ziprecruiter logo
Ziprecruiter
Easy
Machine Learning Engineer Locked

Find Neighboring Records by Identifier

This question evaluates understanding of ordered data traversal and efficient lookup design, assessing competency with data structures, indexing and r...

Coding & Algorithms
3
0
31 people solved
May 6, 2026
Amazon logo
Amazon
Medium
Data Scientist

Solve Algorithmic Challenges in Online Coding Assessments

Scenario Online assessment requiring implementation of common algorithmic problems. Question Given an array of integers and a target, return indices o...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
17
0
144 people solved
Aug 4, 2025
Uber logo
Uber
Medium
Software Engineer Locked

Reconstruct the Alphabet Order of an Alien Language

This question tests graph construction and topological sorting, core algorithmic skills for reasoning about partial orderings derived from constraints...

Coding & Algorithms
1
0
14 people solved
Jun 8, 2026
Previous1...294295296...610Next
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
  • Stripe

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