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
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
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
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Build a File-Backed Key-Value Store

This question evaluates a candidate's understanding of persistent key-value storage, in-memory versus on-disk state management, serialization/deserial...

Coding & AlgorithmsKey-Value StoresFile & Media Storage
13
0
122 people solved
Apr 11, 2026
Uber logo
Uber
Medium
Software Engineer Locked

Design mkdir and ls for a Basic File System

Review a clean object model and path-resolution contract for implementing mkdir and ls in a basic file system.

Software Engineering Fundamentals
1
0
26 people solved
Aug 22, 2026
Databricks logo
Databricks
Hard
Software Engineer Locked

Design an Online Bookstore

This question evaluates a candidate's ability to design a scalable, fault-tolerant online bookstore by addressing service decomposition, functional re...

System DesignSystem Design Fundamentals
26
0
380 people solved
Mar 15, 2026
Whatnot logo
Whatnot
Easy
Software Engineer Locked

Count User Journey Prefixes

This question evaluates the ability to reconstruct per-user action sequences from timestamped logs, aggregate and count path prefixes, and apply data-...

Coding & AlgorithmsTreesSorting
17
0
158 people solved
Apr 1, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Count Matrix Cells Whose Row and Column Neighbors Match

This Hudson River Trading software engineering question asks candidates to count matrix cells whose row and column neighbors match. It is useful for p...

Software Engineering FundamentalsGrids & Matrices
20
0
216 people solved
Jul 2, 2026
Anthropic logo
Anthropic
Hard
Software Engineer

Compute a Global Mode Across Distributed Partitions

Compute the mode of data partitioned across several workers using supplied send/receive-style communication primitives. Explain the protocol and how y...

Software Engineering FundamentalsBatch & Stream ProcessingPartitioning & Consistent Hashing
2
0
24 people solved
Mar 30, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Implement Social Graph Snapshot Queries

This question evaluates understanding of graph data structures, query-efficient indexing, and algorithmic trade-offs for static directed graphs, inclu...

Coding & AlgorithmsGraphsData Structure Design
10
0
131 people solved
Apr 13, 2026
Harvey logo
Harvey
Medium
Software Engineer Locked

Implement a Database Connection Pool

This question evaluates skills in concurrent resource management, synchronization primitives, and robust connection lifecycle handling within database...

Coding & AlgorithmsConcurrency
32
1
291 people solved
Feb 25, 2026
ByteDance logo
ByteDance
Medium
Software EngineerIntern

Explain the TCP Three-Way Handshake and Its Guarantees

Walk through the TCP three-way handshake from a client initiating a connection to both endpoints being ready to exchange application data. Explain why...

Software Engineering FundamentalsNetworking
1
0
32 people solved
Aug 23, 2026
Capital One logo
Capital One
Medium
Data Analyst

Find Lowest Prices for Highly Rated Categories

You are given two tables containing product catalog information and purchase records. Tables products | Column | Type | Description | |---|---:|---| |...

Data Manipulation (SQL/Python)
8
0
93 people solved
Feb 15, 2026
Capital One logo
Capital One
Medium
Data Scientist

Analyze Subscription, Insurance, App, and Card Cases

You are in a Data Scientist "power day" interview for a product analytics role. The interviewer gives you four independent business cases. For each on...

Analytics & ExperimentationBusiness Case Analysis
39
0
696 people solved
Apr 12, 2026
Intuit logo
Intuit
Medium
Staff Software EngineerSenior+ Locked

Implement Role-Aware User Information Views

Implement role-aware profile views across a React client and a Java or Python backend. Define field-level policy on the server, keep list and detail r...

Software Engineering Fundamentals
5
0
51 people solved
Aug 14, 2026
Salesforce logo
Salesforce
Medium
Software Engineer Locked

Design a Synchronized Watch Party System (LLD)

This question evaluates a candidate's ability to design a low-level, object-oriented system for real-time state synchronization across multiple client...

System DesignLow-Level Design (OOP)Consistency & Availability
16
0
149 people solved
Jun 30, 2026
Stripe logo
Stripe
Medium
Software Engineer

Answer hiring manager behavioral questions

Hiring manager round: behavioral questions Prepare structured answers to the following questions (with likely follow-ups). Use concrete examples from ...

Behavioral & LeadershipMotivation & FitProject Deep Dive
32
0
234 people solved
Jan 22, 2026
DoorDash logo
DoorDash
Medium
Data Scientist Locked

Diagnose a Decline in Order Acceptance Rate

Practice diagnosing a drop in order acceptance rate using funnel definitions, instrumentation checks, and mix-versus-within-segment decomposition. Con...

Analytics & ExperimentationMetric DiagnosticsMetrics & KPIs
19
0
162 people solved
Jul 19, 2026
Costco logo
Costco
Medium
Software Engineer

Debug a Google Cloud Web App Where 80% of Users See Only a Loading Spinner

A product with a web frontend is deployed on Google Cloud. About 20% of users see the page load normally. The other 80% see only a loading spinner, an...

Software Engineering FundamentalsDebugging
0
0
1 people solved
Oct 6, 2026
Qualified Health logo
Qualified Health
Hard
Software Engineer

Reconcile RAG Document Expiry, Chat History, and Cold Audits

Design the data lifecycle and history store for a document-grounded conversation system with these reported requirements: - Uploaded documents and vec...

System DesignPrivacy & ComplianceIndexing & Query Performance
0
0
6 people solved
Sep 8, 2026
Pinterest logo
Pinterest
Medium
Machine Learning Engineer Locked

Implement a Sparse Matrix Class

This question evaluates the ability to design and implement efficient sparse data structures and perform matrix operations, testing knowledge of spars...

Coding & Algorithms
3
0
53 people solved
May 11, 2026
Tesla logo
Tesla
Medium
Software Engineer Locked

Design a Video Sharing Platform

Design a large-scale video platform with resumable uploads, idempotent transcoding, adaptive playback, CDN delivery, access control, and moderation ho...

System Design
2
0
28 people solved
Aug 24, 2026
Nooks logo
Nooks
Medium
Software Engineer

Implement a BFS web crawler

A web crawler starts from a URL and explores reachable pages level by level. You are given: - start_url: string - An interface fetch_links(url: string...

Coding & AlgorithmsGraphs
18
0
175 people solved
Feb 28, 2026
Previous1...144145146...606Next
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