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
12.2k
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
NVIDIA logo
NVIDIA
Medium
Software Engineer

Apply sliding window techniques

Apply sliding window techniques Explain the sliding window technique and apply it to solve: ( 1) Given an array of positive integers and a target S, r...

Coding & AlgorithmsTwo Pointers & Sliding Window
15
0
154 people solved
Aug 7, 2025
Google logo
Google
Easy
Data Scientist

Determine Normality of Single Observation with Z-Test

Hypothesis Test for One Observation Against a Standard Normal You observe a single numeric value x and want to decide whether it could plausibly have ...

Statistics & MathHypothesis TestingProbability
35
0
156 people solved
Jul 12, 2025
Airbnb logo
Airbnb
Medium
Data Scientist

Compute browsing metrics in Python from logs

Given event logs, write idiomatic Pandas to compute segment-level metrics and a funnel. Data schema: events(event_id, ts_utc, guest_id, device in {des...

Data Manipulation (SQL/Python)Pandas & Python DataUser Behavior & Funnels
7
0
82 people solved
Oct 13, 2025
Shield Ai logo
Shield Ai
Easy
Software EngineerSenior+ Locked

Count Pairs with the Minimum Absolute Difference

Count unordered index pairs whose values have the minimum absolute difference in an integer array. Sorting reveals the minimum gap, while duplicate ru...

Coding & Algorithms
1
0
22 people solved
May 25, 2026
Google logo
Google
Medium
Data ScientistSenior+

How would you use propensity score matching here

You want to estimate the causal effect of a new recommender feature on 7-day retention. The feature was not randomized: users “opt in” after seeing a ...

Analytics & ExperimentationCausal Inference
26
0
206 people solved
Nov 24, 2025
Tesla logo
Tesla
Medium
Backend EngineerSenior+

Describe conflict and proudest work

You may be asked behavioral questions such as: - Tell me about a time you had a conflict with a teammate or partner team. What happened, how did you h...

Behavioral & LeadershipConflict & CollaborationProject Deep Dive
7
0
99 people solved
Jan 25, 2026
Google logo
Google
Medium
Software Engineer Locked

Reconstruct original array from doubled shuffle

This question evaluates array manipulation, multiset/frequency reasoning, pairing logic, and careful handling of edge cases such as zeros and negative...

Coding & Algorithms
9
0
80 people solved
Jan 4, 2026
Tencent logo
Tencent
Medium
Data Scientist

Implement robust k-means with k-means++ initialization

Implement from scratch in Python (no scikit‑learn) a function kmeans(X, k, max_iter=300, tol=1e-4, random_state=0) that returns (centroids, labels). R...

Coding & AlgorithmsUnsupervised LearningML Coding
7
0
103 people solved
Oct 13, 2025
LinkedIn logo
LinkedIn
Medium
Data Scientist Locked

Derive mean and variance of x̄

This question evaluates understanding of expectation, variance, covariance structure, and how dependence between observations affects the precision of...

Statistics & MathSampling & EstimationProbability
7
0
102 people solved
Feb 19, 2026
Netflix logo
Netflix
Hard
Software Engineer

Build a Recommendation System and Conversational Interface from Scratch

Build a Recommendation System and Conversational Interface from Scratch Design an initial recommendation system, then extend it with a chatbot that ca...

ML System Design
1
0
26 people solved
Jan 7, 2026
Point72 logo
Point72
Hard
Data Engineer

Describe Resolving Stakeholder Trade-Offs

Tell me about a time when you worked with multiple stakeholders who had different needs or priorities, and you had to create a solution that satisfied...

Behavioral & Leadership
10
0
76 people solved
Apr 30, 2026
Snapchat logo
Snapchat
Medium
Software Engineer

Design Manhattan-distance meeting point finder

Given an m×n grid with cells marked 1 for homes and 0 otherwise, choose a single meeting cell that minimizes the sum of Manhattan distances from all h...

Coding & Algorithms
8
0
72 people solved
Sep 6, 2025
Apple logo
Apple
Easy
Software Engineer

Solve three easy algorithm problems

You are given three independent algorithmic tasks. For each one, explain your approach (no need to run code). 1) Merge two sorted lists (integers inst...

Coding & AlgorithmsStacks & Queues
41
0
352 people solved
Nov 11, 2025
Walmart Labs logo
Walmart Labs
Easy
Software EngineerSenior+ Locked

Design aggregator for multiple downstream services

This question evaluates system-design and distributed-systems skills, focusing on microservice aggregation, fan-out/fan-in concurrency, fault toleranc...

System Design
12
0
95 people solved
Dec 9, 2025
Moloco logo
Moloco
Medium
Machine Learning EngineerIntern

Simulate bubble elimination and maximize common prefix

You are given two independent coding tasks (as in a multi-question OA). Solve each. Task A — Grid “bubble/candy” elimination simulation You are given ...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
9
0
98 people solved
Dec 27, 2025
WeRide logo
WeRide
Medium
Software Engineer Locked

Implement Several Core Algorithmic Components

This multi-part problem evaluates core competencies in data structures and algorithm design (LRU cache, grid pathfinding and earliest-feasible-time an...

Coding & Algorithms
1
0
23 people solved
May 4, 2026
Perplexity logo
Perplexity
Medium
Software Engineer Locked

Design personalized discovery recommendations

This question evaluates understanding of recommender systems and personalization, covering skills in data collection and event logging, candidate retr...

ML System Design
7
0
114 people solved
Sep 4, 2025
Gusto logo
Gusto
Easy
Data Scientist

Compute p-values for 2 variants vs control

A/B/n test: compute p-values and make a ship decision You ran an online A/B/n experiment with 1 control and 2 treatment variants (A/B/C). You are give...

Analytics & ExperimentationHypothesis TestingExperiment Analysis & Readout
11
0
140 people solved
Nov 2, 2025
Meta logo
Meta
Medium
Software Engineer

Find Kth Largest and Tree Ancestors

In a technical phone interview, the candidate was asked two coding problems in the same round: 1. K-th largest element in an array Given an unsorte...

Coding & Algorithms
3
0
63 people solved
Feb 22, 2026
Deutsche Bank logo
Deutsche Bank
Hard
Software Engineer

Solve tree equality and valid parentheses

You are asked to solve two independent coding questions. 1) Compare two binary trees for equality Given the roots of two binary trees p and q, return ...

Coding & Algorithms
9
0
64 people solved
Aug 25, 2025
Previous1...338339340...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