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
639
Companies
980
Updated
11.10.2026
639 Questions 980 Companies11.10.2026
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
Google logo
Google
Medium
Software Engineer

Grid Reachability From Start to Target With Impassable Water Cells

You are given an N x N grid. One cell is the start S, one cell is the target T, some cells are water, and every other cell is land. Water cells cannot...

Coding & AlgorithmsGrids & Matrices
7
0
116 people solved
Sep 17, 2026
Google logo
Google
Medium
Software Engineer Locked

Earliest Time a Friendship Network Is Fully Connected with Friend and Unfriend Events

Given an unsorted log of timestamped friend and unfriend events among n people, return the earliest time at which everyone is connected through chains...

Coding & AlgorithmsGraphs
24
2
366 people solved
Sep 12, 2026
Oracle logo
Oracle
Medium
Software Engineer

Count Islands of Horizontally or Vertically Connected Land in a Grid

You are given a rectangular grid in which 1 marks land and 0 marks water. An island is a maximal group of land cells connected horizontally or vertica...

Coding & AlgorithmsGrids & Matrices
4
0
34 people solved
Oct 15, 2026
Fireworks logo
Fireworks
Medium
Machine Learning Engineer Locked

Recommend Connections Through Mutual Friends and Evaluate the Ranking

Build mutual-friend connection recommendations, define bounded candidate scores, and distinguish affinity ranking from NDCG evaluation with independen...

ML System DesignRecommendation SystemsGraphs
13
1
181 people solved
Sep 11, 2026
Databricks logo
Databricks
Medium
Software Engineer

Fastest Single-Mode Commute on a Grid with Per-Step Time and Cost

A city map is given as a rectangular grid of characters. Exactly one cell is 'S' (your start) and exactly one cell is 'D' (your destination). Every ot...

Coding & AlgorithmsGrids & MatricesGraphs
16
0
129 people solved
Sep 11, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Protobuf-Style Schema: Look Up Message Sizes and Field Types, Then Parse the Schema

Implement a small schema service for a simplified Protocol Buffers (protobuf) style schema language. A schema defines named messages. Each message has...

Software Engineering FundamentalsParsing & InterpretersGraphs
10
0
70 people solved
Sep 9, 2026
Glean logo
Glean
Medium
Software Engineer

Find the Cell with the Smallest Total Walking Distance to All Targets Around Walls

You are given a 2D grid in which every cell is a target 'x', an empty cell '.' or a wall 'w'. Find a cell whose total walking distance to all targets ...

Coding & AlgorithmsGrids & MatricesGraphs
5
0
51 people solved
Sep 30, 2026
Oscar logo
Oscar
Hard
Software EngineerSenior+ Locked

Longest Chain of Linked Names in a Directed Acyclic Graph

A graph coding question: given directed pairs of names that together form an acyclic graph, return the number of names in the longest chain that follo...

Coding & AlgorithmsGraphsDynamic Programming
4
0
73 people solved
Sep 21, 2026
Harvey logo
Harvey
Medium
Software Engineer Locked

Find Duplicate Files While Handling Symbolic-Link Cycles

Find duplicate files with cycle-safe directory traversal, explicit symlink policies, streamed hashes, exact byte checks, and changing-file handling.

Software Engineering FundamentalsOperating SystemsGraphs
28
0
222 people solved
Sep 1, 2026
Waymo logo
Waymo
Medium
Software Engineer Locked

Implement an ObjectTracker That Merges Observations From Two Perception Systems

Two perception systems track the same objects under different IDs. Implement an ObjectTracker with addLink, addObservation and getHistory that returns...

Software Engineering FundamentalsData Structure DesignGraphs
4
0
66 people solved
Sep 10, 2026
Goldman Sachs logo
Goldman Sachs
Medium
Quantitative Researcher

Minimum-Cost Round Trip Visiting Every City Once with Asymmetric Costs

A salesperson must visit n cities. The cost of traveling directly from city i to city j is dist[i][j], and every city can be reached directly from eve...

Coding & AlgorithmsDynamic ProgrammingBit Manipulation
2
0
34 people solved
Sep 25, 2026
Google logo
Google
Medium
Software Engineer

Check Whether Two Ordered Sequences Can Be Merged

You are given two arrays of integer labels, a and b. The order of labels in each array gives ordering constraints: an earlier label must appear before...

Coding & AlgorithmsGraphs
13
0
106 people solved
Aug 26, 2026
Rippling logo
Rippling
Medium
Software EngineerSenior+ Locked

Design Raw and Computed Spreadsheet Views

Design raw and computed spreadsheet views with formula parsing, dependency replacement, cache invalidation, atomic edits, and undo semantics.

Software Engineering FundamentalsLow-Level Design (OOP)Graphs
29
0
369 people solved
Sep 18, 2026
Rippling logo
Rippling
Medium
Backend EngineerSenior+ Locked

Process a Task List: Deduplicate, Drop Completed, Sort by Priority, and Nest Subtasks

Senior backend coding question: process a batch of scheduler tasks by removing duplicates on description and due date, dropping completed tasks, sorti...

Software Engineering FundamentalsSortingAI-Assisted Development
28
0
207 people solved
Sep 11, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

At-Least-Once Job Queue with Timeouts, Retries, a Dead-Letter Queue and Dependencies

Implement an in-memory task scheduling queue that provides at-least-once delivery and has a dead-letter queue (DLQ). The reported interface is: - enqu...

Software Engineering FundamentalsData Structure DesignJob Scheduling & Workflows
10
0
116 people solved
Sep 18, 2026
Google logo
GoogleBloombergAmazon

Also asked at Amazon, Microsoft, Oracle, Goldman Sachs, Meta, LinkedIn, Airbnb, Grab, Uber, Pinterest, Anduril, Palantir, ByteDance, DocuSign

Medium
Software Engineer

Combine Accounts Connected by Shared Addresses

Problem Each account contains a name followed by email addresses. Accounts sharing an address belong to the same person, transitively. Matching names ...

Coding & AlgorithmsGraphsArrays & Strings
3
0
23 people solved
Harvey logo
Harvey
Medium
Software Engineer

Mini Spreadsheet with Formulas Evaluated in set_cell and Cycle Rejection

Build a small in-memory spreadsheet with two operations: set_cell(label, value) stores a value in a cell, and get_cell(label) returns a cell's value. ...

Software Engineering FundamentalsGraphsData Structure Design
13
0
104 people solved
Aug 23, 2026
Kikoff logo
Kikoff
Medium
Android EngineerSenior+

Expand Nested Substitutions and Detect Reachable Cycles

A template contains references to replacement strings. First explain one-level substitution. Then support replacement strings that themselves contain ...

Coding & AlgorithmsParsing & InterpretersBacktracking & Recursion
0
0
8 people solved
Oct 21, 2026
ZipHQ logo
ZipHQ
Hard
Software Engineer Locked

Find the Guaranteed Capture Time in a Turn-Based Graph Game

Solve guaranteed capture time in a finite turn-based graph pursuit game, including Jerry-first moves, staying, optimal adversarial play, and infinite ...

Coding & AlgorithmsGraphsDynamic Programming
19
0
177 people solved
Sep 17, 2026
Citadel logo
Citadel
Medium
Software Engineer

In-Memory Spreadsheet with Formulas, Cycle Detection and Read vs Write Computation

Implement a simplified in-memory spreadsheet in Python that supports three operations: - set_cell(cell, value): set the cell to a numeric value. - set...

Software Engineering FundamentalsGraphsParsing & Interpreters
7
0
60 people solved
Aug 12, 2026
Previous1...567...32Next
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