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
Anthropic logo
Anthropic
Medium
Machine Learning Engineer Locked

Convert State Stream to Events

This question evaluates a candidate's ability to process sequential categorical data by identifying and summarizing consecutive runs, reason about tim...

Coding & AlgorithmsArrays & Strings
52
0
510 people solved
Apr 6, 2026
Headway logo
Headway
Medium
Software Engineer

Debug and extend obstacle-run statistics classes

Problem: Obstacle course run statistics (debug + implement) You are building software to track how long racers take to complete an obstacle course. Do...

Coding & AlgorithmsLow-Level Design (OOP)Debugging
42
1
319 people solved
Feb 11, 2026
Google logo
Google
Medium
Software Engineer

Arrange Values to Maximize Range Requests

Problem Rearrange the values of nums before answering all inclusive, zero-based ranges in requests. Each request contributes the sum of the values in ...

Coding & AlgorithmsGreedyArrays & Strings
1
0
14 people solved
Google logo
GoogleMetaAmazon

Also asked at Amazon, Microsoft, Bloomberg, Acko

Easy
Software Engineer

Find Tweets Whose Character Count Exceeds Fifteen

Problem Return tweet_id for Tweets rows whose content uses more than 15 characters. A tweet with exactly 15 characters does not qualify. Preserve the ...

Data Manipulation (SQL/Python)SQL
0
0
7 people solved
Amazon logo
Amazon
Medium
Software EngineerSenior+ Locked

Find the Most Frequent Request IDs

Find the most frequent request IDs in a large event stream and return the top k in ranked order. The task tests frequency counting, deterministic tie-...

Coding & AlgorithmsHeaps & Priority QueuesArrays & Strings
31
0
289 people solved
Aug 22, 2026
Truefoundry logo
Truefoundry
Medium
Software Engineer Locked

Query a Versioned Array

A fixed-length array starts with all values equal to zero. Work through the function contract, boundary cases, correctness argument, and time and spac...

Coding & Algorithms
8
0
65 people solved
Aug 1, 2026
Waymo logo
Waymo
Medium
Software Engineer Locked

Validate a Parent-Child Forest

This question evaluates understanding of graph theory concepts—specifically rooted trees, parent-child relationships, cycle detection, and node in-deg...

Coding & Algorithms
10
0
79 people solved
May 27, 2026
Reddit logo
Reddit
Medium
Software EngineerSenior+ Locked

Defend a Schema Decision Through a Real Technical Challenge

Prepare a technically grounded story about a schema choice that affected correctness, scale, or delivery speed. Explain workload invariants, the stron...

Behavioral & Leadership
7
0
86 people solved
Jul 8, 2026
Glean logo
Glean
Medium
Software Engineer Locked

Return Top Department Suggestions

This question evaluates proficiency in prefix-based search and top-k ranking, familiarity with in-memory data structures and preprocessing strategies,...

Coding & Algorithms
16
0
103 people solved
May 17, 2026
Flexport logo
Flexport
Hard
Software Engineer Locked

Design Container Assignment with Incompatible Goods

Design a shipment-planning service that assigns goods to ocean containers under weight, volume, and incompatibility constraints. Cover versioned plans...

System Design
9
0
80 people solved
Jun 28, 2026
OpenAI logo
OpenAI
Medium
Backend Engineer

Design a Real-Time Chess Service

Design an online chess service that supports real-time, two-player games. Users should be able to create or join a game, make legal moves, and see the...

System DesignMultiplayer Game SystemsFault Tolerance & Failover
32
0
367 people solved
Apr 22, 2026
Oracle logo
Oracle
Hard
Software Engineer

Implement Queue Operations Using Two Stacks

Implement Queue Operations Using Two Stacks Process a sequence of queue operations using exactly two LIFO stacks as the queue's internal data structur...

Coding & Algorithms
6
0
77 people solved
May 1, 2026
Atlassian logo
Atlassian
Medium
Software Engineer

Find nearest common manager for multiple employees

Given an organizational hierarchy modeled as a rooted tree, build the tree from (employee, manager) pairs and implement a function that, for k ≥ 2 emp...

Coding & AlgorithmsTrees
31
0
362 people solved
Jul 31, 2025
ByteDance logo
ByteDance
Medium
Data Scientist

Discuss Your Data Analytics and Causal-Inference Experience

Discuss Your Data Analytics and Causal-Inference Experience In a screening conversation for a data science role in integrity and safety, you are asked...

Behavioral & LeadershipProject Deep DiveCausal Inference
2
0
26 people solved
Sep 23, 2026
Meta logo
Meta
Medium
Product Manager

Product Sense: How Meta Could Support Students Working Through School Assignments

You are a product manager at Meta, whose apps include Facebook, Instagram, WhatsApp and Messenger. Design a product that helps students with their hom...

Product Design & StrategyProduct SenseMetrics & KPIs
0
0
10 people solved
Sep 12, 2026
Salesforce logo
Salesforce
Medium
Software Engineer

Choose Long-Term Correctness over a Short-Term Win

Prompt Describe a decision in which you gave up a short-term benefit to protect a more important long-term outcome. Explain the competing incentives, ...

Behavioral & Leadership
6
0
42 people solved
Apr 11, 2026
Amazon logo
Amazon
Medium
Applied ScientistSenior+ Locked

Mean and Variance Through Maximum Likelihood

Derive the normal-distribution maximum-likelihood estimators for mean and variance and understand why MLE variance differs from the unbiased sample va...

Statistics & Math
4
0
63 people solved
Aug 15, 2026
Shopify logo
Shopify
Medium
Machine Learning Engineer

Model Product Ranking

You are building a machine learning model for product ranking in an e-commerce marketplace. Given a user, context, and a set of candidate products, ra...

Machine LearningRanking ModelsML System Design
10
0
179 people solved
Apr 1, 2026
IBM logo
IBM
Medium
Software Engineer

Compute shared free time intervals

You are given schedules for multiple employees. schedules[i] is a list of busy intervals for employee i, where each interval is half-open [start, end)...

Coding & Algorithms
18
1
186 people solved
Sep 6, 2025
Stripe logo
Stripe
Medium
Software Engineer

Find linked user records by similarity

You are given a list of user records. Each record has the following fields: - id (integer, unique) - name (string) - email (string) - company (string)...

Coding & AlgorithmsGraphsArrays & Strings
31
0
339 people solved
Dec 8, 2025
Previous1...237238239...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