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
Oscar logo
Oscar
Easy
Software EngineerSenior+ Locked

Design a Stateful Outreach Campaign Engine

Design a per-client outreach campaign that sends email and timed text follow-ups, stops on response, and records terminal failure or unresponsiveness....

System Design
6
0
58 people solved
Jul 14, 2026
Qualified Health logo
Qualified Health
Hard
Software Engineer

Recover Durable Workflows with External Effects and Long Waits

Design durable execution and recovery for a distributed DAG workflow system. Workers can crash or lose connectivity, tasks can have irreversible exter...

System DesignJob Scheduling & WorkflowsDistributed Transactions & Idempotency
3
0
24 people solved
Sep 30, 2026
Amazon logo
Amazon
Medium
Software EngineerSenior+

Versioned Integer Array with Snapshots and Point-in-Time Reads

Build a fixed-length array of integers that remembers its history. Every element starts at 0. You can change elements, take numbered snapshots of the ...

Coding & AlgorithmsData Structure DesignBinary Search
3
2
25 people solved
Aug 27, 2026
Bloomberg logo
BloombergInfosysGoogle
Hard
Software Engineer

Winner When Each Move Removes a Positive Square

Problem Starting with n stones,Alice and Bob alternate removing a positive square number of stones no larger than the pile,with Alice first. A player ...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
1
0
9 people solved
Qualified Health logo
Qualified Health
Hard
Software Engineer

Scale Mixed I/O and LLM Workflow Execution

Design the capacity, queueing, worker isolation, and storage layers of a multi-tenant workflow system whose DAGs mix fast I/O tasks with much slower L...

System DesignJob Scheduling & WorkflowsRate Limiting
1
0
19 people solved
Sep 30, 2026
Imc logo
Imc
Hard
Software Engineer

Choose container set to minimize waste

Question A pharmaceutical company is packaging liquid medicine for shipment. Each customer order has a required volume. The company can choose exactly...

Coding & AlgorithmsBinary SearchSorting
52
1
492 people solved
Oct 6, 2025
Waymo logo
Waymo
Medium
Site Reliability Engineer Locked

Is the Segment From 0 to 50 Fully Contaminated After Each Landing Point?

Points land one at a time on the segment from 0 to 50, each contaminating an interval of length 1 around it; after each landing, report whether the wh...

Coding & AlgorithmsIntervals & Scheduling
5
0
44 people solved
Sep 10, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Design Blackjack Hands, Splits, and a Multi-Deck Shoe

Design the core object model for a blackjack game. Make the API or object boundaries explicit, then cover invariants, edge cases, testing strategy, an...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
15
1
141 people solved
Aug 4, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Implement IP Address Arithmetic

This question evaluates proficiency in IP addressing, parsing and validation, binary/address-space arithmetic, CIDR subnet calculation, and formatting...

Coding & Algorithms
23
3
175 people solved
May 12, 2026
Meta logo
Meta
Hard
Software Engineer Locked

Design Ride Requests, Driver Matching, and Trip State

Design a ride-sharing backend with fresh locations, candidate search, conflict-free assignment, idempotent trip transitions, and failure recovery.

System DesignGeo & Delivery SystemsDistributed Coordination
3
0
37 people solved
Sep 4, 2026
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Bloomberg, Netflix

Medium
Software Engineer

Measure a Shared Contiguous Array Block

Problem Return the greatest length of a contiguous block occurring in both nums 1 and nums 2. A subsequence with gaps does not qualify. `cpp class Sol...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
1
0
14 people solved
Amazon logo
AmazonDeshawSchrodinger

Also asked at Schrodinger, ZIP, Google, Meta, Uber, PhonePe, Bloomberg, Walmart Labs, TikTok, Twilio, OYO

Medium
Software Engineer

Reach the Furthest Building with Limited Climbing Supplies

Problem Starting at index 0 in heights, move to each next building in order. A flat or downward step is free. An upward step of height d consumes eith...

Coding & AlgorithmsGreedyHeaps & Priority Queues
0
0
10 people solved
Google logo
GoogleAmazonMicrosoftBloomberg

Also asked at Microsoft, Bloomberg

Medium
Software Engineer

Count Index Pairs That Disagree with Their Value Difference

Problem A pair of indices (i, j) is bad when i < j and j - i != nums[j] - nums[i]. Return the number of bad pairs in nums as a long long. `cpp class S...

Coding & AlgorithmsArrays & StringsMath & Number Theory
1
0
14 people solved
Rippling logo
Rippling
Medium
Software Engineer Locked

Design a Data-Driven Expense Rule Evaluator

Design an expense-policy evaluator whose rules are stored as validated JSON so policies can be added or changed without deploying code. Make the API o...

Software Engineering FundamentalsParsing & Interpreters
29
0
252 people solved
Jul 27, 2026
Atlassian logo
Atlassian
Medium
Software Engineer

Design an image crawler for unlimited URLs

Design a service that crawls images starting from a set of root URLs. Requirements: - Input: one or more root URLs. - Crawl pages, discover links, and...

System DesignSystem Design FundamentalsFile & Media Storage
25
1
179 people solved
Jan 5, 2026
Axon logo
Axon
Medium
Software EngineerSenior+

Design camera-footage upload with custody chain

System design prompt You’re building a backend service for uploading recorded body-camera / dashcam footage from client devices (often on unreliable n...

System DesignFile & Media StorageApplication Security
48
1
832 people solved
Feb 11, 2026
xAI logo
xAI
Hard
Software Engineer Locked

Design and Implement a URL Shortening Service

Prepare for a xAI system design interview about design and implement a url shortening service. This question focuses on requirements, architecture, tr...

System DesignSystem Design FundamentalsAPI Design
24
0
242 people solved
Jul 3, 2026
Decagon logo
Decagon
Medium
Software Engineer AI Locked

Design an AI Gateway

This question evaluates system design competencies for a multi-tenant AI gateway, including architectural design, unified API and authentication patte...

System DesignLLM ApplicationsAPI Design
85
0
588 people solved
Feb 17, 2026
Harvey logo
Harvey
Medium
AI Agent Locked

Build and Evaluate a Minimal Embedding-Based RAG Pipeline

Build a minimal retrieval-augmented generation pipeline with transparent ingestion, chunking, embeddings, indexing, retrieval, and prompt assembly. Ev...

ML System Design
8
1
97 people solved
Aug 14, 2026
Rippling logo
Rippling
Hard
Software Engineer

Compute org height and minimal CEO promotions

You are given an organization chart with n employees labeled 1..n. Employee 1 is the CEO (root). The reporting relationships are given as two integer ...

Coding & AlgorithmsTrees
52
2
775 people solved
Feb 12, 2026
Previous1...173174175...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