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
  • Affiliate Program
  • 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
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Simulate Plant Infection With Controlled Burning

You are given an R by C grid of plants. Each plant is initially healthy, infected, recovered, or dead. A plant has up to four orthogonal neighbors. De...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
62
0
426 people solved
Apr 2, 2026
IBM logo
IBM
Medium
Software Engineer Locked

Manage Authentication Tokens with a Fixed Time to Live

Implement authentication tokens with a fixed time to live across generate, renew, and count operations. Respect the exact expiry boundary, ignore rene...

Coding & AlgorithmsData Structure DesignSimulation & State Machines
13
0
196 people solved
Aug 23, 2026
Bilt Rewards logo
Bilt Rewards
Medium
Software Engineer Locked

Repair and Extend a Transaction Reward Processor

Diagnose and repair a layered transaction reward processor whose tests, file parsing, business-rule calculation, database writes, or queries may be fa...

Software Engineering Fundamentals
12
0
161 people solved
Jul 21, 2026
Google logo
Google
Medium
Software Engineer Locked

Minimum Path Node Count with an Optional Broken Vertex

Return the fewest vertices on a graph path while optionally excluding one broken vertex, then compare the follow-up that permits it. The problem cover...

Coding & Algorithms
22
1
389 people solved
Sep 3, 2026
Airbnb logo
Airbnb
Medium
Machine Learning EngineerSenior+ Locked

Rank Home Search Results Without a Text Query

Design a home-search ranker without query text, covering structured intent, training bias, cold start, online evaluation, and production debugging.

ML System DesignRanking ModelsExperiment Design (A/B Testing)
5
0
109 people solved
Sep 4, 2026
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Meta, Bloomberg, LinkedIn, Barclays

Medium
Software Engineer

Split a String into the Most Letter-Disjoint Pieces

Problem Cut s into as many consecutive nonempty parts as possible so that no letter occurs in two different parts. Concatenating the parts in order mu...

Coding & AlgorithmsGreedyArrays & Strings
1
0
11 people solved
Harvey logo
Harvey
Medium
Software Engineer Locked

In-Memory File System: Create, Track Duplicates, and List

This question evaluates a software engineer's ability to design and implement an in-memory file system, testing data structure selection, path parsing...

Coding & AlgorithmsLow-Level Design (OOP)
31
1
239 people solved
Jun 20, 2026
ZipHQ logo
ZipHQ
Medium
Backend Engineer Locked

Find Bugs in an LRU Cache

Find the behavioral defects in a Java LRU cache built with LinkedHashMap and provide minimal failing tests. Correct access ordering, update recency, l...

Software Engineering FundamentalsDebuggingData Structure Design
26
1
218 people solved
Jul 4, 2026
Figma logo
Figma
Hard
Machine Learning Engineer

End-to-End ML Project Deep Dive: Decisions, Evaluation Design and Career Goals

You are interviewing for a Machine Learning Engineer role focused on post-training for agents. The screening conversations center on one hands-on proj...

Behavioral & LeadershipProject Deep DiveMotivation & Fit
2
0
29 people solved
Oct 9, 2026
Google logo
GoogleMetaAmazon

Also asked at Amazon, Microsoft, Bloomberg, IBM, Walmart Labs, Sigmoid, Snowflake

Medium
Software Engineer

Minimize Two-Person Boats under a Weight Limit

Problem Every person in people must board a boat. Each boat carries at most two people, and their combined weight cannot exceed limit. There is no lim...

Coding & AlgorithmsGreedyTwo Pointers & Sliding Window
1
0
16 people solved
Meta logo
Meta
Medium
Software EngineerSenior+ AI

Solve Maze and Suffix Problems

Solve the following two coding problems. Problem A: Find the shortest path through a maze with keys and doors You are given a 2D grid representing a m...

Coding & Algorithms
17
0
203 people solved
Apr 25, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer

Python Language and Runtime Fundamentals

Python Language and Runtime Fundamentals Clarifying Questions to Ask - Should answers describe CPython specifically or Python language semantics acros...

Software Engineering Fundamentals
26
1
290 people solved
Apr 30, 2026
Akuna Capital logo
Akuna Capital
Hard
Software Engineer

Implement an order matching engine supporting buy, sell, modify, cancel and print

Design and implement an order matching system: a program that keeps a book of buy and sell orders and supports five operations, buy, sell, modify, can...

Software Engineering FundamentalsTrading SystemsLow-Level Design (OOP)
0
0
2 people solved
Oct 24, 2026
Plaid logo
Plaid
Easy
Software Engineer

Resolve routing-number to bank mapping

You are given bank-routing data coming from one or more JSON sources. Each source provides a list of records like: `json { "routing": "026009593", "ba...

Coding & AlgorithmsData Cleaning & Wrangling
61
0
677 people solved
Feb 4, 2026
Databricks logo
Databricks
Medium
Product Manager

Motivation for joining Databricks as a product manager

What draws you to Databricks, and why do you want to be a product manager there? `hint Make it specific to Databricks An answer that would fit any fas...

Behavioral & LeadershipMotivation & Fit
0
0
16 people solved
Sep 7, 2026
eBay logo
eBay
Medium
Software Engineer

List Numbers Whose Neighboring Digits Differ by One

Problem Return all integers in the inclusive interval [low,high] whose adjacent decimal digits differ in absolute value by exactly 1. Single-digit num...

Coding & AlgorithmsBacktracking & RecursionMath & Number Theory
1
0
16 people solved
Tradedesk logo
Tradedesk
Medium
Frontend Engineer Locked

Debug a Frontend Component That Shows Wrong API Results

A front-end debugging question in which a React component that fetches data sometimes shows results that do not match the current input, even though e...

Software Engineering FundamentalsDebuggingConcurrency
5
1
63 people solved
Sep 15, 2026
Tesla logo
Tesla
Hard
Software EngineerSenior+ Locked

Senior Project Deep Dive: Design Rationale, Your Most Complex Project, Questions for the HM

A senior infrastructure loop probes past work in a resume deep dive on design rationale and rejected alternatives, then the hiring manager asks for yo...

Behavioral & LeadershipProject Deep Dive
7
0
62 people solved
Sep 7, 2026
Pinterest logo
Pinterest
Hard
Software Engineer Locked

Behavioral Deep Dive: Owned Project Metrics, Fast Decisions, Feedback, and Conflict

Behavioral practice for a software engineering onsite: give a self-introduction, then deep dive into the project where you had the most ownership and ...

Behavioral & LeadershipProject Deep DiveAmbiguity & Decision Making
6
0
55 people solved
Sep 2, 2026
Google logo
GoogleCapital OneAmazon

Also asked at Amazon, Citadel, Apple, Meta, Microsoft, Bloomberg, TikTok, Intuit

Hard
Software Engineer

Return Finite Gaps Shared by Every Schedule

Problem schedule contains each employee's sorted, nonoverlapping working intervals. Return all finite, positive-length intervals during which everyone...

Coding & AlgorithmsIntervals & SchedulingSorting
1
0
16 people solved
Previous1...104105106...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