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
xAI logo
xAI
Hard
Software Engineer Locked

Design and Implement a URL Shortening Service

Prepare for a xAI system design interview about design and implement a url shortening service. This question focuses on requirements, architecture, tr...

System DesignSystem Design FundamentalsAPI Design
24
0
242 people solved
Jul 3, 2026
Google logo
Google
Easy
Software Engineer

Maximize coins with tokens moving by +3

You are given a 1D board represented by a string s of length n. Each character is one of: - '.' — an empty cell - 'C' — a cell containing exactly one ...

Coding & AlgorithmsMath & Number TheoryGreedy
48
4
479 people solved
Dec 5, 2025
Harvey logo
Harvey
Medium
Software Engineer

Implement a Formula Spreadsheet

Design and implement a small in-memory spreadsheet. The spreadsheet must support cell labels such as A1 and B10, where a label consists of uppercase l...

Coding & AlgorithmsData Structure DesignGraphs
23
1
307 people solved
Apr 11, 2026
Two Sigma logo
Two Sigma
Medium
Data Scientist

Implement merge sort and largest 1-rectangle

The coding round included two algorithm questions: 1. Implement merge sort for an array of integers. Return the sorted array and explain its time and ...

Coding & Algorithms
24
0
171 people solved
Feb 26, 2026
Ramp logo
Ramp
Medium
Software Engineer Locked

Implement a Per-IP Sliding Window Rate Limiter

This Ramp software engineering question evaluates implementation of a per-IP sliding window rate limiter. It prepares candidates to discuss time-windo...

Software Engineering FundamentalsRate LimitingData Structure Design
30
0
216 people solved
Jul 2, 2026
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Assign tennis bookings to minimum courts

This question evaluates understanding of interval scheduling and temporal resource allocation, testing algorithm design, complexity analysis, and appr...

Coding & AlgorithmsIntervals & SchedulingGreedy
42
1
311 people solved
Jan 22, 2026
Decagon logo
Decagon
Medium
Software Engineer AI Locked

Design an AI Gateway

This question evaluates system design competencies for a multi-tenant AI gateway, including architectural design, unified API and authentication patte...

System DesignLLM ApplicationsAPI Design
85
0
588 people solved
Feb 17, 2026
Google logo
Google
Hard
Software Engineer

Place New Stations to Minimize the Widest Gap

Problem stations contains strictly increasing positions on the x-axis. Add exactly k stations at arbitrary real positions, including noninteger positi...

Coding & AlgorithmsBinary SearchMath & Number Theory
2
0
22 people solved
Amazon logo
AmazonDeshawSchrodinger

Also asked at Schrodinger, ZIP, Google, Meta, Uber, PhonePe, Bloomberg, Walmart Labs, TikTok, Twilio, OYO

Medium
Software Engineer

Reach the Furthest Building with Limited Climbing Supplies

Problem Starting at index 0 in heights, move to each next building in order. A flat or downward step is free. An upward step of height d consumes eith...

Coding & AlgorithmsGreedyHeaps & Priority Queues
0
0
10 people solved
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Bloomberg, Netflix

Medium
Software Engineer

Measure a Shared Contiguous Array Block

Problem Return the greatest length of a contiguous block occurring in both nums 1 and nums 2. A subsequence with gaps does not qualify. `cpp class Sol...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
1
0
14 people solved
IBM logo
IBM
Medium
Software Engineer Locked

Break Adjacent Duplicate Characters

Practice counting the minimum replacements required to break adjacent duplicates across many lowercase words.

Coding & Algorithms
8
2
72 people solved
Aug 28, 2026
Harvey logo
Harvey
Medium
AI Agent Locked

Build and Evaluate a Minimal Embedding-Based RAG Pipeline

Build a minimal retrieval-augmented generation pipeline with transparent ingestion, chunking, embeddings, indexing, retrieval, and prompt assembly. Ev...

ML System Design
8
1
97 people solved
Aug 14, 2026
Google logo
GoogleMetaAmazon

Also asked at Amazon, Bloomberg, C3 AI

Easy
Software Engineer

Choose Three Lengths with the Largest Nondegenerate Triangle Perimeter

Problem Choose three occurrences from nums as side lengths. Return the largest possible perimeter of a triangle with positive area, or0 if no such tri...

Coding & AlgorithmsGreedySorting
1
0
15 people solved
Lyft logo
Lyft
Medium
Software EngineerSenior+ Locked

Minimum Window Substring with Repeated Required Characters

Find the shortest substring covering every required character, including duplicates, with case-sensitive matching and a linear-time minimum-window alg...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
7
0
75 people solved
Sep 8, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ Locked

Explain a Failure and What You Changed

Describe a work failure with clear responsibility, contributing decisions, recovery actions, and evidence about the corrective change.

Behavioral & LeadershipFailure & LearningOwnership & Execution
2
0
44 people solved
Aug 25, 2026
Meta logo
Meta
Medium
Product Manager

Sizing daily shopping users across Facebook, Instagram, WhatsApp and Messenger

As a product manager at Meta, estimate how many people use Meta's apps for e-commerce on a typical day. State what you count as e-commerce use, label ...

Product / Decision MakingEstimation & Market Sizing
1
0
10 people solved
Sep 29, 2026
Okta logo
Okta
Medium
Software Engineer Locked

Evaluate Role-Based Access with Deny Precedence

Evaluate access for a user and requested property in a user-to-role-to-permission model, applying deny-overrides-allow precedence and defaulting to de...

Coding & Algorithms
4
0
81 people solved
Aug 20, 2026
SIG (Susquehanna) logo
SIG (Susquehanna)
Easy
Data Scientist Locked

Find the Expected Number of Consecutive Chosen Pairs

Find the expected number of adjacent integer pairs in a uniformly chosen six-element subset of 1 through 35. The solution uses 34 indicators, computes...

Statistics & Math
2
0
44 people solved
Aug 16, 2026
Tower logo
Tower
Hard
Data Scientist Locked

Explain Why Constant Neural-Network Initialization Fails

During neural-network training, what happens if every weight is initialized to 0? Cover data and labels, leakage-safe features, baselines and model ch...

Machine Learning
5
0
46 people solved
Jul 26, 2026
Citadel logo
Citadel
Medium
Software Engineer

Implement a single-producer multi-consumer ring buffer

Implement a fixed-capacity ring buffer in C++ for a setting with one producer and multiple consumers. Design a class that stores integers in a preallo...

Coding & AlgorithmsData Structure Design
38
0
346 people solved
Feb 21, 2026
Previous1...167168169...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