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 10,000+ real questions from top companies.

Product

  • Questions
  • Learning Tracks
  • Interview Guides
  • Resources
  • Green Card Tracker
  • Premium
  • Practice with AI agents
  • For Universities

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
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
Robinhood logo
Robinhood
Medium
Backend Engineer Locked

Scale Word-Frequency Processing Beyond One Machine

Design a distributed word-frequency pipeline for inputs too large for one process while preserving exact tokenization and ranking. Cover immutable obj...

System Design
5
0
53 people solved
Jun 13, 2026
CVS Health logo
CVS Health
Easy
Data Scientist

Calculate CI and Test Correlation Under Normality

Inference on a Mean, Significance of a Correlation, and a Normal Quantile Assume standard parametric conditions (normality as stated). Show formulas, ...

Statistics & MathHypothesis TestingSampling & Estimation
16
0
142 people solved
Oct 13, 2025
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Design a Distributed Rate Limiter

This question evaluates expertise in distributed systems and real-time rate-limiting, covering scalability, low-latency design, concurrency control, c...

System DesignRate LimitingPartitioning & Consistent Hashing
38
0
275 people solved
May 14, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ AI

Solve Three Coding Interview Problems

The interview included three coding tasks: 1. Common ancestor in an N-ary tree You are given the root of an N-ary tree and two target nodes. Determ...

Coding & Algorithms
6
0
79 people solved
Feb 2, 2026
xAI logo
xAI
Medium
Machine Learning EngineerIntern

Validate normalized palindromes with variants

Implement a function isNormalizedPalindrome(s) that returns true if s reads the same forward and backward after removing non‑alphanumeric characters a...

Coding & AlgorithmsTwo Pointers & Sliding Window
21
1
158 people solved
Jul 17, 2025
Salesforce logo
Salesforce
Medium
Software Engineer

Determine minimal substitutions and removals

Question Given a list of words, determine the minimum number of character substitutions required so that, in every word, no two adjacent characters ar...

Coding & Algorithms
23
0
89 people solved
Jul 29, 2025
Rippling logo
Rippling
Medium
Software EngineerIntern Locked

Explain JS event loop and related concepts

This question evaluates understanding of core frontend JavaScript concepts including the event loop and task scheduling, differences in variable scopi...

Software Engineering FundamentalsJavaScript & TypeScriptBrowser Internals
8
0
121 people solved
Nov 20, 2025
Reddit logo
Reddit
Easy
Data Scientist

Collaborate with PM and Eng as DS

Question As a Data Scientist working with Product Managers and Engineers: 1. How do you structure collaboration (requirements, timelines, ownership)? ...

Behavioral & LeadershipCommunication & StakeholdersLeadership & Influence
9
0
97 people solved
Dec 11, 2025
Stripe logo
Stripe
Medium
Data Scientist

Navigate an ambiguous take-home assessment

Behavioral Case: Executing a 4–6 Hour Take‑Home Data Science Assignment Context You are a candidate for a Data Scientist role. You receive a one‑week ...

Behavioral & Leadership
6
0
52 people solved
Oct 13, 2025
Turo logo
Turo
Medium
Software Engineer

Design trip booking REST API and schema

Design a RESTful API for a guest to book a trip. Include: - Core endpoints (search availability, create booking, view/cancel booking, payment/confirma...

System DesignAPI DesignIndexing & Query Performance
12
0
140 people solved
Feb 12, 2026
Imc logo
Imc
Medium
Data ScientistIntern Locked

Handling Difficult Feedback

Respond constructively when a collaborator expresses an opinion that is difficult to hear.

Behavioral & Leadership
1
0
29 people solved
Aug 14, 2026
Two Sigma logo
Two Sigma
Medium
Quantitative ResearcherIntern

Linear Interpolator with Extrapolation

Linear Interpolator with Extrapolation You are given n knot points in a 2D coordinate system, where knots[i] = [x_i, y_i]. All x-coordinates are disti...

Coding & AlgorithmsBinary SearchMath & Number Theory
13
0
98 people solved
Sep 10, 2025
Two Sigma logo
Two Sigma
Medium
Data Scientist

Analyze NYC taxi trips efficiently over last 7 days

Use today = 2025-09-01. Consider NYC taxi trip data over the last 7 days inclusive (2025-08-26 to 2025-09-01, America/New_York). You receive two datas...

Data Manipulation (SQL/Python)
2
0
48 people solved
Oct 13, 2025
Netflix logo
Netflix
Medium
Software Engineer

Implement TTL Cache and Tree Balance Reporting

Complete both coding tasks. Task A: Time-limited cache Design and implement an in-memory cache where every key expires after a time-to-live duration. ...

Coding & Algorithms
7
0
55 people solved
Apr 17, 2026
Amazon logo
Amazon
Medium
Software Engineer

Merge overlapping intervals

Merge overlapping intervals Given a list of half-open numeric intervals [start, end), merge all overlapping or contiguous intervals and return a list ...

Coding & Algorithms
5
1
86 people solved
Jul 15, 2025
Capital One logo
Capital One
Medium
Data Scientist

Audit flight data quality from metadata

You’re given an airline on‑time dataset and a one‑page “Metadata” slide that claims: flight_date (string, local time), dep_time/arr_time (HHMM local),...

Data Manipulation (SQL/Python)
3
0
31 people solved
Oct 13, 2025
Harvey logo
Harvey
Medium
Backend Engineer

Explain project decisions and trade-offs

Pick one project you worked on and walk through the key technical decisions behind it. Why did you choose that architecture, design, or technology sta...

Software Engineering FundamentalsProject Deep DiveSystem Design Fundamentals
13
0
122 people solved
Feb 18, 2026
Citadel logo
Citadel
Medium
Software EngineerIntern

Design alerting for application-to-exchange mappings

Problem: Alerting design for application→exchange mappings You are building a service that receives an ordered stream of mapping events: - register(ap...

System DesignObservabilityBatch & Stream Processing
38
0
683 people solved
Feb 11, 2026
Capital One logo
Capital One
Medium
Data Scientist

Write SQL to compute campaign net revenue

Using the schema and sample data below, write SQL to produce, for each campaign_id and segment, the following metrics for August 2025: total_reached, ...

Data Manipulation (SQL/Python)SQLBusiness Case Analysis
21
0
154 people solved
Oct 13, 2025
Enigma logo
Enigma
Medium
Software Engineer

Search Book Titles

You are given a list of book titles and a user query string. Return all titles that are relevant to the query. A title is considered relevant if any t...

Coding & Algorithms
5
0
53 people solved
Feb 3, 2026
Previous1...284285286...610Next
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
  • Stripe

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