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
Google logo
GoogleAmazonMeta

Also asked at Meta, Bloomberg, Microsoft, Symantec, Apple, TCS, Accenture, Morgan Stanley, Yandex, Qualcomm, Tinkoff, Oracle, TikTok

Medium
Software Engineer

Remove a Linked Node by Its Distance from the Tail

Problem Given the head of a singly linked list and an integer n, remove the node that is n positions from the tail, counting the tail as position 1. R...

Coding & AlgorithmsLinked ListsTwo Pointers & Sliding Window
4
0
55 people solved
DoorDash logo
DoorDash
Medium
Software Engineer

Route Requests with Round Robin and Consistent Hashing

A traffic router has pod, backend, request, and router abstractions. It should distribute requests in round-robin order across available pods while sk...

Software Engineering FundamentalsPartitioning & Consistent HashingDebugging
2
0
25 people solved
Oct 24, 2026
Squarepoint logo
Squarepoint
Easy
Quantitative ResearcherNew Grad

Decision Trees in Mathematical Terms, and What Random Forests and XGBoost Improve

Describe, in mathematical terms, how a decision tree is built and how it makes predictions. Then discuss its advantages and disadvantages, the benefit...

Machine LearningSupervised LearningML Fundamentals
2
0
17 people solved
Nov 2, 2026
Toast logo
Toast
Hard
Software Engineer

Code Review of a Multi-File HTTP API: Wrong Method, Payload and Validation Bugs

In a one-hour code-review round you are handed several source files that together implement an HTTP API, and you are asked to find the bugs in them. Y...

Software Engineering FundamentalsCode Quality & MaintainabilityAPI Design
20
0
174 people solved
Sep 23, 2026
Replit logo
Replit
Hard
Software EngineerNew Grad

Convert Editor Keystrokes into a Minimal Insert, Delete and Skip Operation List

A text editor records an editing session as an initial document and a list of keystrokes. The cursor starts at position 0, before the first character ...

Coding & AlgorithmsSimulation & State Machines
4
0
39 people solved
Oct 22, 2026
Rippling logo
Rippling
Medium
Software Engineer

Rank five-card hands by type, then find best and worst completions of unknown cards

A card game similar to poker compares hands of five cards. You first write the comparison between two players' hands, then extend it to hands whose la...

Software Engineering FundamentalsSortingArrays & Strings
30
1
212 people solved
Oct 2, 2026
Airbnb logo
Airbnb
Hard
Software Engineer

In-Memory Banking System: Transfers, Top Spenders, Scheduled Payments, Account Merges

Implement an in-memory banking system that grows over four levels. Each level adds requirements on top of the previous ones, and everything from earli...

Software Engineering FundamentalsLow-Level Design (OOP)Payments & Ledgers
23
1
243 people solved
Sep 23, 2026
Citadel logo
Citadel
Medium
Software Engineer

Constant-Time Ticker Portfolio With Uniform, Weighted and Streaming Random Picks

Design and implement a portfolio of stock ticker symbols (strings such as AAPL) that supports three operations, each in constant time: - add(ticker): ...

Software Engineering FundamentalsData Structure DesignMath & Number Theory
0
2
11 people solved
Nov 6, 2026
Oracle logo
Oracle
Easy
Software EngineerSenior+

Senior Storage Infrastructure Engineer: Career Walkthrough and a Difficult Problem Solved

In a short recruiter screen for a senior core infrastructure engineer role on a storage team at a cloud infrastructure provider, the recruiter asked t...

Behavioral & LeadershipMotivation & FitProject Deep Dive
1
0
22 people solved
Oct 25, 2026
Amazon logo
Amazon
Medium
Software Engineer

Explain How You Use AI and Correct Its Mistakes

How do you use AI in your work, and what do you do when its output is wrong? Give a concrete example that shows your own judgment, verification, and r...

Behavioral & LeadershipAI-Assisted DevelopmentTesting & Quality
3
0
26 people solved
Oct 24, 2026
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Microsoft, Meta, LinkedIn, Oracle, Rakuten, TikTok, Adobe, Walmart Labs, Zoho

Medium
Software Engineer

Enumerate Target Combinations with Single-Use Occurrences

Problem Given the integer array choices and the integer goal, return every unique combination of values whose sum is goal. Each position in choices ma...

Coding & AlgorithmsBacktracking & RecursionSorting
4
0
42 people solved
Remitly logo
Remitly
Medium
Software Engineer

Design an IP Blocking Service Backed by a Slow, Unreliable Government API

Design a service that decides whether requests from an IP address must be blocked. Whether an IP should be blocked is known only to an external govern...

System DesignFault Tolerance & FailoverCaching
3
0
39 people solved
Oct 15, 2026
Bloomberg logo
BloombergAmazonGoogle

Also asked at Google, Microsoft, Meta, Arista Networks, Revolut, Infosys, Oracle, Nutanix, Apple, ByteDance, TikTok, NVIDIA, Palo Alto Networks

Medium
Software Engineer

Reverse an Inclusive Segment of List Nodes

Problem Reverse the nodes from position left through position right in a singly linked list, leaving the rest in its original order. Positions are one...

Coding & AlgorithmsLinked Lists
7
0
70 people solved
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Leftmost-Fit Memory Allocator: Allocate Consecutive Units and Free by Owner

Simulate a memory allocator over n units: each allocation takes the leftmost run of consecutive free units for an owner, and each free releases all of...

Coding & AlgorithmsData Structure DesignTrees
66
0
495 people solved
Sep 20, 2026
LinkedIn logo
LinkedIn
Medium
Software EngineerSenior+

Fewest-Edge Distance Between Two Nodes in a Directed Acyclic Graph

This came as a follow-up to ordering the nodes of a dependency graph. You are given a directed acyclic graph with n nodes labeled 0 to n - 1, a list o...

Coding & AlgorithmsGraphs
14
0
119 people solved
Sep 29, 2026
Workday logo
Workday
Medium
Software Engineer

Partition Words Into Groups With Identical Letter Counts

Given a list of lowercase words, partition them into groups so that two words are in the same group exactly when one can be turned into the other by r...

Coding & AlgorithmsArrays & Strings
0
0
14 people solved
Nov 8, 2026
Databricks logo
Databricks
Medium
Software EngineerSenior+

Report the Winner After Every Move on an n x n Tic-Tac-Toe Board

Two players play tic-tac-toe on an n × n board, a generalization of the classic 3 × 3 game. Player 1 makes the first move and the players then alterna...

Coding & AlgorithmsSimulation & State Machines
23
1
174 people solved
Sep 18, 2026
Listen Labs logo
Listen Labs
Medium
Software Engineer

Parse a Truncated Streaming JSON Prefix of Strings and Nested Arrays

A language model streams its output as JSON, and the client wants to show what has arrived so far without waiting for the stream to finish. Given the ...

Coding & AlgorithmsParsing & Interpreters
9
0
104 people solved
Oct 20, 2026
Capital One logo
Capital One
Medium
Software Engineer

In-Memory Banking System: Deposits, Transfers, Top-N Activity, Test Harness

Implement an in-memory banking system as a class. The interviewer builds it up in three steps, then tests it by feeding in lists of string arrays, one...

Software Engineering FundamentalsData Structure Design
24
0
183 people solved
Sep 22, 2026
Walmart Labs logo
Walmart Labs
Easy
Machine Learning EngineerSenior+

Design an Agentic Search Experience

Design an agentic search experience: a user states a goal in natural language, and the system can interpret the request, ask a clarifying question, se...

ML System DesignAI AgentsLLM Evaluation
26
0
206 people solved
Oct 4, 2026
Previous1...161718...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