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
Roblox logo
Roblox
Hard
Data Scientist

Design leakage-free predictive maintenance pipeline

Predict 24-hour Machine Faults from an Hourly Panel (End-to-End Design) Context You are given a machine–hour panel: one row per machine per hour with ...

Machine Learning
11
0
89 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Design a ChatGPT-like serving system

This question evaluates expertise in designing scalable machine-learning inference systems, covering chat-completion architecture, GPU capacity planni...

System DesignLLM Inference & ServingGPU Infrastructure
10
0
189 people solved
Mar 1, 2026
Airbnb logo
Airbnb
Medium
Software Engineer

Maximize reward by scheduling jobs

Given n jobs, each with a start time, end time, and reward, choose a subset of non-overlapping jobs to maximize total reward. Return the maximum rewar...

Coding & AlgorithmsDynamic ProgrammingIntervals & Scheduling
36
1
244 people solved
Sep 6, 2025
Kneron logo
Kneron
Medium
Software Engineer

Optimize machines for distributed merging cost

Optimize machines for distributed merging cost Optimize k to Minimize Distributed Runtime Context You are splitting a dataset of size n across k ident...

System Design
3
0
40 people solved
Jul 26, 2025
TikTok logo
TikTok
Medium
Software Engineer

Find k-th largest element in array

You are given an unsorted array of integers nums and a positive integer k. Design an efficient algorithm to find the k-th largest element in the array...

Coding & Algorithms
9
0
76 people solved
Oct 27, 2025
Meta logo
Meta
Medium
Data Scientist

[Analytics Reasoning] Impact of Malicious Accounts on Meta

You are analyzing malicious accounts on a large social network. Assume: - 1% of all accounts are malicious. - Malicious accounts send friend requests ...

Analytics & Experimentation
11
0
55 people solved
Apr 7, 2025
Pinterest logo
Pinterest
Medium
Product Manager

Pinterest product sense: helping Pinners track down items they discover

You are a product manager at Pinterest. Design a feature that helps users locate items. `hint Pin down what "items" means The brief is open on purpose...

Product Design & StrategyProduct Sense
0
0
8 people solved
Sep 12, 2024
Meta logo
Meta
Easy
Data Scientist

Explain Central Limit Theorem's Importance in A/B Testing

Explain the Central Limit Theorem's Importance in A/B Testing This statistics prompt asks you to state the Central Limit Theorem, explain why it matte...

Statistics & Math
20
0
96 people solved
Jul 12, 2025
Uber logo
Uber
Medium
Software EngineerSenior+

How do you manage performance and disagreements?

Manager behavioral prompts Answer the following as a people manager (or manager-level tech lead). Use real examples where possible. 1. Scope and owner...

Behavioral & LeadershipLeadership & InfluenceConflict & Collaboration
9
0
144 people solved
Mar 1, 2026
Salesforce logo
Salesforce
Medium
Software Engineer

Design a recommendation system

Design a recommendation system Design a User–Item Recommendation System Context You are asked to design an end-to-end recommendation service that sugg...

ML System DesignRecommendation SystemsStorage & Sharding
6
0
119 people solved
Aug 4, 2025
Walmart Labs logo
Walmart Labs
Medium
Product Manager

Selecting the Product Assortment for a New Walmart Fulfillment Center

You are a product manager at Walmart, and the company is building a new fulfillment center. Decide which products it should stock, and explain how you...

Product Design & StrategyOperations & Capacity
1
0
9 people solved
May 21, 2025
Cohere logo
Cohere
Medium
Machine Learning EngineerSenior+ Locked

Explain LLM training, RL, and evaluation

This question evaluates understanding of the full large language model lifecycle and associated competencies, including pre-training, supervised fine-...

Machine LearningFine-Tuning & Alignment TechniquesReinforcement Learning
9
0
140 people solved
Dec 25, 2025
Waymo logo
Waymo
Medium
Frontend EngineerSenior+ Locked

Build a Debounced Autocomplete Search Bar

Build a debounced autocomplete search bar that remains correct under rapid typing, deletion, focus changes, selection, and out-of-order network respon...

Software Engineering Fundamentals
6
0
81 people solved
May 11, 2026
ByteDance logo
ByteDance
Medium
Software Engineer

Serialize and Deserialize an In-Memory Key-Value Store

Implement serialization and deserialization for an in-memory key-value store. serialize turns the store's contents into a single string or byte sequen...

Software Engineering FundamentalsParsing & InterpretersTesting & Quality
1
0
10 people solved
May 15, 2026
Meta logo
Meta
Medium
Software Engineer

Design a marketplace price tracking service

Design a large-scale product price tracking service similar to an e-commerce price monitor. Users can submit product links from a major online marketp...

System Design
3
0
59 people solved
Mar 4, 2026
Optiver logo
Optiver
Hard
Quantitative Trader

Why Trading and Why This Firm, With Pressure-Tested Probing of Your Experience

Two of the four rounds in this trading interview process are behavioral, each about an hour. The first opens the process; the second accompanies the f...

Behavioral & LeadershipMotivation & FitProject Deep Dive
1
0
8 people solved
Nov 13, 2025
Google logo
Google
Medium
Product Manager

Walking Through API Design as a PM: Consumers, Resources, Contracts and Versioning

In a product manager interview you are asked how you would design an API. Walk through the approach you would take and the main decisions you would ma...

Software Engineering FundamentalsPlatform & API ProductsAPI Design
2
0
17 people solved
Feb 24, 2025
Intersystems logo
Intersystems
Medium
Software Engineer Locked

Predict output when iterating ordered keys

This question evaluates understanding of ordered maps, iteration semantics, reverse traversal and accumulation of values in code. It is commonly asked...

Coding & Algorithms
9
0
71 people solved
Feb 12, 2026
Apple logo
Apple
Easy
Software Engineer Locked

Implement flood fill using BFS and DFS

This question evaluates proficiency in graph traversal and matrix manipulation, specifically the implementation of BFS and DFS variants for flood fill...

Coding & AlgorithmsGrids & Matrices
20
1
239 people solved
Jan 22, 2026
Riotgames logo
Riotgames
Easy
Software Engineer Locked

Describe a Difficult Project

Describe a recently completed difficult project, including the obstacle, decisions, and outcome.

Behavioral & Leadership
1
0
20 people solved
Aug 26, 2026
Previous1...595596597...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