PracHub
QuestionsExperienceLearningGuidesInterview PrepGreen Card
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
  • AI Coding Questions
  • Compare Platforms
  • Discord Community

Support

  • support@prachub.com
  • (916) 541-4762

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
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
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
TikTok logo
TikTok
Medium
Software Engineer

Solve pair-counting and account-merging problems

Problem A — Count qualifying products You are given two integer arrays A and B, and an integer T. For each element a in A, count how many elements b i...

Coding & Algorithms
4
0
76 people solved
Dec 8, 2025
Amazon logo
Amazon
Medium
Data Scientist

Implement robust word counts and min/max

You receive a 50GB UTF-8 text corpus on disk. Implement a Python solution that:\n- Streams the file without loading it fully into memory.\n- Counts ca...

Data Manipulation (SQL/Python)Arrays & StringsProgramming Languages
10
0
99 people solved
Oct 13, 2025
Oracle logo
Oracle
Medium
Software Engineer

Find shortest subarray meeting target sum

Find shortest subarray meeting target sum Given an integer array nums (values may be negative) and an integer T, return the length of the shortest non...

Coding & Algorithms
3
0
74 people solved
Jul 26, 2025
Meta logo
Meta
Medium
Software Engineer

Decide palindrome within k deletions

Decide palindrome within k deletions Given a string s and integer k, decide whether s can be transformed into a palindrome by deleting at most k chara...

Coding & Algorithms
2
0
43 people solved
Aug 7, 2025
LinkedIn logo
LinkedIn
Easy
Data Scientist

Do US members upload more videos than non-US?

You suspect video posting adoption differs between US and international members. Tables members - memberid INT (PK) - country VARCHAR (e.g., 'usa', '...

Analytics & ExperimentationMetrics & KPIsSegmentation & Cohort Analysis
9
0
90 people solved
Feb 1, 2026
Instacart logo
Instacart
Medium
Software Engineer

Pivot transactions by date without date libs

Given a stream of transaction rows (shopper_id, date_str, amount) where date_str is ISO format 'YYYY-MM-DD', produce a pivoted report for a specified ...

Data Manipulation (SQL/Python)
3
0
28 people solved
Sep 6, 2025
LinkedIn logo
LinkedIn
Medium
Data Scientist

Device Status without Timestamps

Table: article_views article_id INT author_id INT viewer_id INT view_dt DATE Count authors who have never viewed any of their own articles. On 20...

Data Manipulation (SQL/Python)
12
0
57 people solved
Apr 26, 2025
TikTok logo
TikTok
Hard
Software Engineer Locked

Find k-th smallest subarray sum

This question evaluates algorithmic problem-solving skills in array processing, specifically understanding of subarray sum properties, selection and r...

Coding & Algorithms
8
0
64 people solved
Jan 22, 2026
Optiver logo
Optiver
Medium
Data Scientist

Compute expected coin flips to meet on octagon

Compute expected coin flips to meet on octagon Meeting Time on a Random Walk Around an Octagon Problem Two independent particles start at opposite ver...

Statistics & MathPuzzles & BrainteasersProbability
7
0
123 people solved
Jul 17, 2025
Coinbase logo
Coinbase
Medium
Software Engineer Locked

Compute Total Manual Distance

This question evaluates array processing, state simulation, and algorithmic reasoning for deterministic stepwise processes, including handling unsorte...

Coding & Algorithms
6
0
64 people solved
Mar 29, 2026
Bnp logo
Bnp
Easy
Data Scientist

How do you split coins to match heads?

There are N coins on a table. You are told that exactly H of them are heads-up (you do not know which ones). You must split the coins into two piles s...

Software Engineering Fundamentals
3
0
58 people solved
Jan 5, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Compute task order and layered execution

You have N tasks labeled 0..N-1 and prerequisite pairs (a, b) meaning task a must complete before task b can start. Return any valid execution order o...

Coding & AlgorithmsGraphs
10
0
161 people solved
Sep 6, 2025
TikTok logo
TikTok
Medium
Data Scientist

Investigating Correlation Between Ad Visits and Reports

Scenario You are on the analytics team at a large social media platform. A positive correlation has been observed between the number of page visits to...

Data Manipulation (SQL/Python)
7
0
76 people solved
Jun 22, 2025
Capital One logo
Capital One
Hard
Data Scientist

Optimize amusement park pricing, capacity, and testing

Context You are interviewing for a Data Scientist role focused on analytics and experimentation. An amusement park is considering launching a paid Fas...

Analytics & ExperimentationExperiment Design (A/B Testing)Business Case Analysis
10
0
102 people solved
Oct 13, 2025
Capital One logo
Capital One
Medium
Data Scientist

Evaluate Models for Credit-Risk Scoring at Capital One

Evaluate Models for Credit-Risk Scoring at Capital One Scenario You are building a production-grade credit-risk scoring model (predicting probability ...

Machine Learning
24
0
100 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Software EngineerSenior+

Handle conflict and missed delivery deadlines

Answer behavioral questions covering: 1. Conflict: Describe a time you had significant conflict with a teammate/stakeholder. What caused it, what did ...

Behavioral & Leadership
8
0
73 people solved
Feb 11, 2026
Snowflake logo
Snowflake
Medium
Data Scientist

Query seven-day conversion with windows and dedupe

Assume all timestamps are UTC. Treat "today" as 2025-09-01. Define "last 7 days" as the inclusive window [2025-08-26 00:00:00, 2025-09-01 23:59:59]. S...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
4
0
60 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Data Scientist

Calculate cross-channel login user proportions

Write SQL to compute, for 2025-08-29 through 2025-08-31, the proportion of users who logged in only via mobile, only via desktop, and via both, where ...

Data Manipulation (SQL/Python)
1
0
15 people solved
Oct 13, 2025
CVS Health logo
CVS Health
Medium
Data Scientist

Describe handling pressure and stakeholder conflicts

Behavioral/Scenario Questions for a Data Scientist — Technical Screen Answer concisely using STAR (Situation, Task, Action, Result) where relevant. 1....

Behavioral & LeadershipProject Deep DiveAmbiguity & Decision Making
12
0
105 people solved
Oct 13, 2025
DoorDash logo
DoorDash
Hard
Software Engineer

Design notification and project architecture

Design notification and project architecture System Design: Multi-Channel Notification Platform Design a scalable Notification System that supports re...

System DesignSystem Design FundamentalsFault Tolerance & Failover
12
0
141 people solved
Aug 4, 2025
Previous1...448449450...606Next
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