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
Capital One logo
Capital One
Medium
Product Manager

Evaluate a Credit Card Partnership

You are a Product Manager evaluating a Capital One credit-card partnership with a merchant such as Uber. The business goal is to increase engagement a...

Product / Decision MakingBusiness Case AnalysisGrowth & Monetization
34
0
263 people solved
Jun 12, 2025
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Meta, Bloomberg

Hard
Software Engineer

Count Strictly Smaller Later Occurrences for Every Position

Problem Return counts where counts[i] is the number of indices j>i with nums[j]<nums[i]. Equal later values do not count. `cpp vector<int> countSmalle...

Coding & AlgorithmsSortingTrees
0
0
11 people solved
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Return the K Smallest Integers

Return the k smallest integers from an unsorted list in ascending order while preserving duplicates. Compare full sorting, a size-k max-heap, quicksel...

Coding & Algorithms
11
0
93 people solved
May 15, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Refactor a Chatbot into Clean Object-Oriented Components

Prepare for a OpenAI software engineering interview question about refactor a chatbot into clean object-oriented components. The prompt highlights pra...

Software Engineering FundamentalsCode Quality & MaintainabilityLow-Level Design (OOP)
18
0
186 people solved
Jun 22, 2026
Temporal logo
Temporal
Medium
Software Engineer Locked

Design a One-to-One Chat System

This question evaluates a candidate's ability to design scalable, real-time backend architectures for one-to-one messaging, covering competencies in d...

System DesignReal-Time SystemsMessaging & Event-Driven
10
0
125 people solved
Apr 3, 2026
Robinhood logo
Robinhood
Medium
Software Engineer Locked

Design a Reliable Distributed Job Scheduler

Design a distributed scheduler for one-time and recurring jobs with pause, resume, cancellation, retries, and multi-tenant fairness. Address durable l...

System DesignJob Scheduling & WorkflowsDistributed Transactions & Idempotency
9
0
127 people solved
Jun 22, 2026
Google logo
GoogleDatabricks
Medium
Software Engineer

Consume a Run-Length Encoded Sequence through a Stateful Iterator

Problem Implement RLEIterator(encoding) and next(n). The even-length encoding consists of count,value pairs; a zero count contributes no values. Each ...

Coding & AlgorithmsData Structure DesignArrays & Strings
1
0
13 people solved
Microsoft logo
MicrosoftAmazonGoogle

Also asked at Google, PhonePe, TikTok

Hard
Software Engineer

Maximum Team Performance with a Size Limit

Problem Choose at most k of the n engineers. A team's performance is the sum of its members' speeds multiplied by the smallest efficiency among those ...

Coding & AlgorithmsGreedyHeaps & Priority Queues
0
0
8 people solved
Google logo
GoogleMetaAmazon
Easy
Software Engineer

Feasibility of a Uniform-Parity Construction

Problem You are given an array nums1 of distinct positive integers. Determine whether another array nums2 of the same length can be constructed so tha...

Coding & AlgorithmsMath & Number TheoryArrays & Strings
0
0
9 people solved
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Debug a Numerical Underflow in an A/B Testing Analytics Repo When the AI Agent Is Wrong

This round is an AI-assisted coding exercise. You are given a real, multi-file repository for an A/B testing analytics platform, a list of five report...

Software Engineering FundamentalsAI-Assisted DevelopmentDebugging
2
0
17 people solved
Jun 16, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Design Restart Strategy for Oracle Solver

This question evaluates understanding of probabilistic runtime analysis and restart strategies for randomized (Las Vegas-style) solvers, including exp...

Machine LearningProbability
15
0
123 people solved
Jan 13, 2026
A
Addepar
Medium
Software Engineer Locked

Design a Multi-Region Event Ticketing System

Design a read-heavy event ticketing service with search, regional reads, ten-minute seat holds, payments, and authoritative inventory. The solution co...

System Design
4
0
30 people solved
Aug 20, 2026
Google logo
GoogleMicrosoftAmazonBloomberg

Also asked at Amazon, Bloomberg

Easy
Software Engineer

Smallest Missing Value at or Above a Sequential Prefix Sum

Smallest Missing Value at or Above a Sequential Prefix Sum You are given a 0-indexed integer array nums. A prefix nums[0..i] is sequential if every su...

Coding & AlgorithmsArrays & Strings
1
0
8 people solved
Flipkart logo
FlipkartAmazonPayPal

Also asked at PayPal, PhonePe, Meta, Microsoft, Deshaw

Medium
Software Engineer

Propagate the Quietest Known Richer Person

Problem People have distinct wealth and distinct quiet values. richer rows [a,b] assert that a is wealthier than b, and all assertions are logically c...

Coding & AlgorithmsGraphsDynamic Programming
1
0
11 people solved
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Solve Matrix and Array Distance Problems

This question evaluates competency in graph traversal and shortest-path reasoning for grid-based problems as well as array-based distance computation ...

Coding & Algorithms
6
0
82 people solved
May 23, 2026
Google logo
GoogleMathWorksAirbnb

Also asked at Airbnb, Coupang, Adobe, Amazon

Medium
Software Engineer

Buy Exact Item Quantities Using Reusable Bundles

Problem price[i] is the unit price of item i, needs[i] is its required quantity, and each special row contains item quantities followed by the bundle ...

Coding & AlgorithmsDynamic ProgrammingBacktracking & Recursion
1
0
16 people solved
Databricks logo
Databricks
Hard
Software Engineer Locked

Find Fastest Commute Mode

This question evaluates graph traversal and shortest-path reasoning on a constrained 2D grid, including modeling movement rules per transportation mod...

Coding & AlgorithmsGrids & Matrices
21
1
153 people solved
Apr 8, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Evaluate an Arithmetic Expression with Parentheses, Unary Minus and Four Operators

Evaluate an arithmetic expression given as a string and return its integer value. This covers the whole reported calculator series: addition and subtr...

Coding & AlgorithmsParsing & InterpretersStacks & Queues
4
0
33 people solved
Apr 28, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Bloomberg, Microsoft, TCS

Easy
Software Engineer

Select Products Marked Both Low Fat and Recyclable

Problem Return product_id for products whose low_fats and recyclable values are both Y. Each flag is the source Y/N category. Rows may be returned in ...

Data Manipulation (SQL/Python)SQL
0
0
6 people solved
Waymo logo
Waymo
Medium
Data Scientist

Implement Safe Average Function

Write a Python function average(values) that returns the arithmetic mean of a list of numbers. Requirements: - If values is empty, return 0. - The inp...

Coding & AlgorithmsMath & Number Theory
26
0
189 people solved
Mar 7, 2026
Previous1...242243244...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