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
DoorDash logo
DoorDash
Medium
Data Scientist Locked

Evaluate Courier-Selected Delivery Distance Limits

Evaluate a feature that lets couriers choose maximum delivery distances. Analyze historical offer behavior, account for marketplace interference, choo...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
5
0
104 people solved
Jul 19, 2026
Digitalocean logo
Digitalocean
Medium
Software Engineer Locked

Design a Database Migration Service with Replication and Bottleneck Analysis

Design consistent snapshots, change replication, resumable migration, validation, cutover, and scaling guided by measured source and destination bottl...

System DesignConsensus & ReplicationData Ingestion & CDC
3
0
50 people solved
Sep 16, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer Locked

Search Monster Battle Strategies

This question evaluates algorithmic problem-solving around deterministic simulation and state-space exploration, focusing on handling transient state ...

Coding & AlgorithmsDynamic ProgrammingSimulation & State Machines
49
1
387 people solved
Apr 8, 2026
Jane Street logo
Jane Street
Medium
Software EngineerIntern

Turning Interview Code into a Reusable Library or API

You have just finished implementing a small game engine during a coding interview: a board data structure for a two-player piece-dropping game, a func...

Software Engineering FundamentalsCode Quality & Maintainability
127
1
998 people solved
Nov 6, 2025
Robinhood logo
Robinhood
Medium
Frontend Engineer

Build a Weekly Calendar

Implement an interactive weekly calendar UI. Requirements: - Display a one-week calendar with 7 days. - The calendar should be divided into 1-hour tim...

Coding & Algorithms
5
0
98 people solved
Apr 5, 2026
Google logo
Google
Easy
Applied Scientist

Respond to a Safety Regression before Releasing a Model

A model is approaching release, but evaluation indicates that its safety performance has declined. How would you investigate the regression, decide wh...

Machine LearningAI Safety & AlignmentModel Evaluation
1
0
14 people solved
Sep 4, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design an Online Chess Platform: Elo Matchmaking, WebSocket Moves, Game Clocks

Design an online chess platform: match players of similar Elo rating quickly, deliver moves in real time over WebSocket connections, and enforce fair ...

System DesignMultiplayer Game SystemsReal-Time Systems
4
0
53 people solved
Sep 20, 2026
Amazon logo
Amazon
Hard
Software Engineer

Maximize a Fixed-Length Sum over Sparse Constant Segments

Maximize a Fixed-Length Sum over Sparse Constant Segments Positive integer positions represent bags arranged from 1 to infinity. You are given non-ove...

Coding & Algorithms
10
1
115 people solved
Jan 29, 2026
A
Addepar
Easy
Software Engineer Locked

Implement a URL-Prefix Sliding-Window Alert Monitor

Design a URL-prefix alert monitor with a 10-minute window, exact error thresholds, trie or dictionary storage, event expiration, and clear alert seman...

Software Engineering FundamentalsData Structure DesignTrees
3
0
44 people solved
Aug 24, 2026
Google logo
Google
Medium
Software EngineerSenior+

Code Review of a Go Token Bucket Rate Limiter Used as HTTP Middleware

In a code review round you are given a pull request and asked to review it as you would for a teammate: find what is wrong, decide what blocks the mer...

Software Engineering FundamentalsCode Quality & MaintainabilityRate Limiting
3
0
26 people solved
Aug 15, 2026
Capital One logo
Capital One
Medium
Software Engineer Locked

Resolve Conflict and Set a Team Objective

Prepare two behavioral stories: resolving a meaningful workplace conflict and setting an actionable team objective. Strong answers show competing inte...

Behavioral & Leadership
18
0
136 people solved
Jul 4, 2026
Revolut logo
Revolut
Medium
Software EngineerNew Grad

Implement a random fixed-size load balancer

Problem: Build a simple load balancer Implement a minimal in-memory load balancer that routes each incoming request to one backend node chosen uniform...

Coding & AlgorithmsData Structure Design
56
0
446 people solved
Feb 11, 2026
Infosys logo
InfosysAmazon
Medium
Software Engineer

Finish the Greatest Number of Partially Filled Bags

Problem Bag i holds rocks[i] rocks and has total capacity capacity[i]. Distribute up to additionalRocks new rocks among bags without exceeding capacit...

Coding & AlgorithmsGreedySorting
1
0
10 people solved
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Count the Separate Land Regions in a Binary Grid Map

You are given a rectangular map as a grid of cells, where 1 marks land and 0 marks water. Two land cells belong to the same region when they share an ...

Coding & AlgorithmsGrids & Matrices
1
2
22 people solved
Aug 23, 2026
Intuit logo
Intuit
Medium
Software Engineer

Design prompts for JSON-only LLM responses

Design an LLM request that returns strict JSON only Context You are designing a backend call to an LLM for a technical screen (System Design & Enginee...

ML System Design
17
0
168 people solved
Sep 6, 2025
LinkedIn logo
LinkedIn
Easy
Data ScientistSenior+

Deciding Whether to Adjust the Home Feed After Complaints About Climate Summit Posts

A climate summit is taking place this month, and members of a professional social network are seeing many climate-related posts in their home feed. So...

Product / Decision MakingMetric DiagnosticsExperiment Design (A/B Testing)
0
0
4 people solved
Oct 25, 2026
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Bloomberg, Meta, TCS

Easy
Software Engineer

Attach Product Names to Every Sales Record

Problem For every Sales record, report product_name, year and the per-unit price, using the Product lookup. Preserve separate sales rows even when the...

Data Manipulation (SQL/Python)SQL
0
0
10 people solved
Squarepoint logo
Squarepoint
Medium
Data Scientist Locked

Compare Bonds, Common Equity, and Dividend Payments

Compare debt and common equity claims, cash flows, risks, and why company profits do not guarantee common-share dividends.

Statistics & Math
4
0
28 people solved
Sep 9, 2026
Valon logo
Valon
Hard
Software Engineer Locked

Implement an In-Memory Query Engine

This question evaluates skills in data modeling, API design, algorithmic filtering, and implementation of an in-memory query execution engine, includi...

Coding & Algorithms
21
0
163 people solved
May 24, 2026
Optiver logo
Optiver
Medium
Software Engineer

Thread-Safe Stock Inventory: Buy and Sell Without Overselling

Thread-Safe Stock Inventory: Buy and Sell Without Overselling You are implementing the inventory-management core of a small brokerage service. The ser...

Coding & AlgorithmsConcurrencyData Structure Design
46
0
454 people solved
Apr 19, 2026
Previous1...139140141...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