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
Optiver logo
Optiver
Medium
Quantitative Trader

Explain Why You Want to Work in Trading

The first technical round for a trading role opened with a brief self-introduction and the question of why you want to work in trading. Answer it as y...

Behavioral & LeadershipMotivation & Fit
0
0
7 people solved
Oct 28, 2026
Rippling logo
Rippling
Medium
Product Manager

Platform investment versus feature delivery: a PM framework for splitting engineering time

How do you weigh shipping a product now against putting time into building a platform? `hint Make the trade-off concrete Ask what the platform work wo...

Product / Decision MakingPrioritization & TradeoffsRoadmapping & Planning
1
0
11 people solved
Oct 22, 2026
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Microsoft, Bloomberg, Amagi, Visa, Zoho, TikTok, LinkedIn, IBM, Uber, Nike, Nykaa, Infosys, Oracle, Deshaw

Hard
Software Engineer

Longest Balanced Parentheses Substring

Problem You receive a string brackets whose characters are all ( or ). Return the greatest length of a contiguous substring that forms a well-formed p...

Coding & AlgorithmsStacks & QueuesArrays & Strings
3
0
25 people solved
LinkedIn logo
LinkedIn
Medium
Software EngineerSenior+

Simulate Roller Coaster Boarding: Runs, Total Time and Seat Utilization

Write a program that plans how a queue of waiting groups rides a roller coaster and reports how the session went. The original prompt was long and was...

Software Engineering FundamentalsSimulation & State Machines
10
0
84 people solved
Aug 15, 2026
Google logo
GoogleAmazoneBay

Also asked at eBay, Microsoft, PayPal, Meta, Oracle, ByteDance, NVIDIA, PhonePe, Karat, Wise, Bloomberg

Medium
Software Engineer

Measure the Largest All-One Square Area

Problem Find the largest square whose cells are all character '1' in a rectangular binary matrix, and return its area. Cells containing character '0' ...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
1
0
23 people solved
Shopify logo
Shopify
Medium
Machine Learning Engineer

Build an Automatic Refund Decision System in a Pair-Programming Session

Build a small automatic refund system for an online store. Refund requests arrive against existing orders, and the system must decide, without a human...

Software Engineering FundamentalsPayments & LedgersDistributed Transactions & Idempotency
9
0
111 people solved
Sep 9, 2026
Microsoft logo
Microsoft
Medium
Product Manager

Retention measurement: defining active use, cohort windows and revenue retention

How would you define and measure retention for a product? `hint Start from the usage rhythm Decide how often a satisfied user would naturally come bac...

Analytics & ExperimentationMetrics & KPIsSegmentation & Cohort Analysis
1
0
12 people solved
Oct 19, 2026
Intuit logo
IntuitGoogleAmazon

Also asked at Amazon, Meta, Uber, Darwinbox, Zoho, Microsoft, Bloomberg, Flipkart, UnifyApps

Hard
Software Engineer

Minimize Initial Health along a Right-Down Dungeon Path

Problem A traveler starts in the top-left room of a rectangular dungeon and must reach the bottom-right room, moving only right or down. Entering a ro...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
2
1
30 people solved
Meta logo
Meta
Medium
Machine Learning Engineer

Behavioral: Ambiguous Problems, Giving and Receiving Feedback, Hardest Project

This behavioral round covered three topics: how you handle ambiguous problems, how you give and receive feedback, and your most challenging project. P...

Behavioral & LeadershipAmbiguity & Decision MakingConflict & Collaboration
7
0
54 people solved
Sep 25, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Debug a GRPO training loop and explain ratios

You are given a simplified implementation of a GRPO (Group Relative Policy Optimization) training step for an RLHF-style policy model. The training is...

Machine LearningReinforcement Learning
271
0
2753 people solved
Feb 19, 2026
Google logo
Google
Medium
Product Manager

Grounding Misinformation Moderation Decisions with a Retrieval-Augmented LLM Pipeline

You are a product manager partnering with a trust-and-safety team. Design a system that uses retrieval-augmented generation (RAG) to help moderate con...

System DesignTrust & SafetyRetrieval-Augmented Generation
1
0
22 people solved
Oct 5, 2026
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Meta, Snowflake, Microsoft, Audible, BlackRock, Swiggy, TCS, Apple, Cisco, Jump Trading, JPMorgan Chase, Visa, Nike, Accenture

Easy
Software Engineer

Recognize Digit-Square Sequences That Reach One

Problem Starting from positive n, repeatedly replace the number by the sum of the squares of its decimal digits. A happy number eventually reaches 1; ...

Coding & AlgorithmsMath & Number Theory
1
0
20 people solved
Brex logo
Brex
Medium
Software Engineer

Build a Simplified Venmo-Style Peer-to-Peer Payments App with AI Tools

In a coding round where any AI coding assistant was allowed, the task was, roughly, to build a simplified Venmo: a peer-to-peer payments app in which ...

Software Engineering FundamentalsPayments & LedgersAI-Assisted Development
10
0
75 people solved
Aug 1, 2026
Stripe logo
Stripe
Medium
Software Engineer Locked

Reconcile Monthly Bank-Account Balances Across Two Datasets

Compare bank-account balances for a target calendar month, report match status, and distinguish missing comparison records from zero balances.

Data Manipulation (SQL/Python)SQL
25
0
229 people solved
Aug 31, 2026
Meta logo
Meta
Medium
Software Engineer

Design a GPS Fitness Tracking App with Activity Uploads and a Friends Feed

Design a mobile fitness-tracking service in the style of Strava. An athlete starts a workout in the app, which records the route from the phone's GPS ...

System DesignSearch & Feed SystemsMobile Architecture & Performance
3
0
37 people solved
Sep 26, 2026
Visa logo
Visa
Medium
Software Engineer

Java Fundamentals: Polymorphism and Monolith Versus Microservices

This round opened with Java fundamentals. Two of the questions were reported: explain polymorphism, and compare a monolithic architecture with microse...

Software Engineering FundamentalsProgramming LanguagesMicroservices & Service Architecture
7
0
54 people solved
Sep 27, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Expiring GPU Credit Ledger with Out-of-Order Events and Point-in-Time Balance

A two-part coding exercise to build a GPU credit ledger with expiring grants, usage deducted earliest-expiration-first, out-of-order events and balanc...

Software Engineering FundamentalsData Structure DesignHeaps & Priority Queues
9
0
107 people solved
Sep 12, 2026
Google logo
GoogleMicrosoftAmazonMeta

Also asked at Amazon, Meta

Hard
Software Engineer

Locate a Rotated Minimum despite Duplicate Ambiguity

Problem Return the minimum value in an array obtained by rotating a sorted nondecreasing array right between one and its length times. Values may repe...

Coding & AlgorithmsBinary Search
3
0
22 people solved
Plaid logo
Plaid
Medium
Software Engineer Locked

Design an Embeddable Pay by Bank Widget

Design an embeddable Pay by Bank widget that isolates bank authentication inside an iframe and communicates through a validated postMessage channel. T...

System DesignApplication SecurityPayments & Ledgers
63
0
433 people solved
Aug 1, 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
24 people solved
Previous1...616263...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