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
Decagon logo
Decagon
Medium
Software Engineer

Send Requests in Batches of Five and Retry Failures After a Per-Request Delay

You are given a list of requests and must deliver every one of them to a dummy API. The API is batch-oriented: a single call carries at most 5 request...

Software Engineering FundamentalsAPI Integration & HTTP ClientsHeaps & Priority Queues
46
0
525 people solved
Sep 24, 2026
Elevenlabs logo
Elevenlabs
Medium
Software Engineer

Longest Spoken Prefix with Repeated Words: Review an LCS Version, Then Rewrite It

A voice agent receives a script from a language model, want_to_speak, and produces a transcript of what it has actually said, spoken_text. The script ...

Software Engineering FundamentalsTwo Pointers & Sliding WindowCode Quality & Maintainability
0
0
16 people solved
Nov 8, 2026
Amazon logo
Amazon
Medium
Software Engineer

Minimize Grid Inconvenience by Adding One Delivery Center

A binary grid represents delivery coverage: 1 marks a delivery center and 0 marks an ordinary location. The distance between cells (r1, c1) and (r2, c...

Coding & AlgorithmsGrids & MatricesBinary Search
39
0
514 people solved
Sep 4, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer

Randomized String Multiset With Average O(1) Insert, Remove and Weighted Random Pick

Design a data structure that holds a collection of strings in which the same string may be stored several times, and that supports the following opera...

Software Engineering FundamentalsData Structure Design
14
1
153 people solved
Oct 16, 2026
Palantir logo
PalantirLinkedInAndurilGoogle

Also asked at Anduril, Google

Medium
Software Engineer

Preprocess Word Positions for Repeated Distance Queries

Problem Implement WordDistance(wordsDict) and shortest(word1,word2). Each shortest call returns the least index distance between occurrences of its tw...

Coding & AlgorithmsData Structure DesignTwo Pointers & Sliding Window
9
0
137 people solved
Google logo
GoogleAmazonMeta

Also asked at Meta, Microsoft, Bloomberg, TCS, Apple, Accenture, Infosys, Oracle, LinkedIn, EPAM Systems, Cognizant, Capgemini

Medium
Software Engineer

Reverse Decimal Digits Within Signed 32-Bit Limits

Problem Given the signed 32-bit integer value, reverse its decimal digits and retain its sign. Return 0 when the reversed value falls outside the sign...

Coding & AlgorithmsMath & Number Theory
10
0
75 people solved
Stripe logo
Stripe
Medium
Software Engineer

Role-Based Access Control with Accounts, Parent-User Inheritance and Reverse Lookups

Build the access-control logic for a system in which users hold roles on accounts. Each user has one or more accounts, and on each account the user ho...

Software Engineering FundamentalsAuthentication & AuthorizationGraphs
2
0
28 people solved
Nov 1, 2026
Databricks logo
Databricks
Medium
Software Engineer

Tic-Tac-Toe Game Logic With a Random-Move Computer Player

Implement the logic of a tic-tac-toe game. The focus is the game logic, not a user interface. Two players, X and O, take turns placing their mark on a...

Software Engineering FundamentalsSimulation & State MachinesLow-Level Design (OOP)
8
0
57 people solved
Oct 14, 2026
Amazon logo
Amazon
Medium
Software Engineer

Design an AI-Agent Security Detection Pipeline for 1 TB/Day of Streaming Telemetry

Design a system in which an AI agent works on a stream of security data and runs security detection on it. The incoming traffic is about 1 TB per day....

System DesignSystem Design FundamentalsBatch & Stream Processing
13
0
183 people solved
Oct 9, 2026
Databricks logo
Databricks
Medium
Software Engineer

Thread-Safe Durable Event Writer Shared by Thousands of Threads

Design a thread-safe, durable event writer used by a single application running on one server. Thousands of application threads share a single instanc...

System DesignConcurrencyOperating Systems
62
1
506 people solved
Sep 11, 2026
Stripe logo
Stripe
Hard
Software Engineer

Deployment Window Scheduler: Allowed Minus Freeze Windows, Time Zones, Filters

Implement a scheduler that computes when a service may be deployed. Time is measured as minute_of_week, an integer in [0, 10079]; a week has 10080 min...

Software Engineering FundamentalsIntervals & Scheduling
82
2
755 people solved
Sep 11, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Greedy Longest-Match Tokenization of a String Against a Fixed Vocabulary

Tokenize a string against a fixed vocabulary by repeatedly taking the longest vocabulary entry that matches at the current position, and return the to...

Coding & AlgorithmsString Algorithms
48
3
554 people solved
Sep 18, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Resolve Variable Assignments With Addition and Subtraction, Flagging Unresolvable Ones

You are given a list of assignment lines. Each line assigns to a variable either an integer or an expression that adds and subtracts integers and othe...

Coding & AlgorithmsGraphsParsing & Interpreters
0
0
18 people solved
Nov 10, 2026
Amazon logo
Amazon
Hard
Software Engineer

Design a Deployment and Orchestration System for a Large Server Fleet

Design a system that deploys software to a large fleet of servers and orchestrates the rollout. The report gives only this one-line prompt, so settle ...

System DesignCI/CD & DeploymentFault Tolerance & Failover
3
0
48 people solved
Oct 21, 2026
Amazon logo
Amazon
Medium
Software EngineerSenior+

Lowest Common Manager of a Group of Employees in an Org Chart

A company's org chart is a tree. The CEO is at the top, and every other person reports directly to exactly one manager. A person's team is that person...

Coding & AlgorithmsTrees
99
1
787 people solved
Oct 2, 2026
Coinbase logo
Coinbase
Medium
Software Engineer

Deliver Limit-Order Fill Notifications under Consumer Backpressure

Design a notification delivery system for users whose limit orders have filled at a trading exchange. Focus on fanout, ordering guarantees, slow downs...

System DesignMessaging & Event-DrivenDistributed Transactions & Idempotency
2
0
36 people solved
Oct 26, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Fewest Node Deletions to Cap an N-ary Tree's Height at k

A rooted tree has n nodes numbered 0 to n - 1, and each node can have any number of children. Node 0 is the root. Deleting a node attaches its childre...

Coding & AlgorithmsTrees
17
0
153 people solved
Oct 12, 2026
LinkedIn logo
LinkedIn
Medium
Machine Learning EngineerSenior+

Weighted Die Roller from Per-Face Probabilities, with Corner Cases

Implement rolling a biased die. The die has k faces, and you are given the probability of each face as a list probs: face i should come up with probab...

Software Engineering FundamentalsMath & Number TheoryBinary Search
6
1
44 people solved
Oct 23, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Build a Refund Workflow Engine over an Outcome-Driven DAG

Extend an existing refund workflow engine whose nodes form a directed acyclic graph. A node performs work such as checking an order delay, issuing a r...

Software Engineering FundamentalsJob Scheduling & WorkflowsDistributed Transactions & Idempotency
3
0
37 people solved
Oct 24, 2026
Harvey logo
Harvey
Hard
Software Engineer

Design a Rule-Driven File Review Agent and Evaluate Each of Its Components

Design an agent that reviews files against a set of rules. A user supplies a collection of files and a list of rules written in plain language; the ag...

ML System DesignAI AgentsLLM Evaluation
10
0
73 people solved
Oct 12, 2026
Previous1...91011...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