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
Google logo
Google
Medium
Machine Learning Engineer Locked

Compare NLP tokenization and LLM recommendations

This question evaluates a candidate's understanding of NLP tokenization approaches and the ability to design LLM-based recommendation components, asse...

Machine LearningTransformers & AttentionLLM Applications
26
0
229 people solved
Feb 8, 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
159 people solved
Jul 17, 2025
Google logo
Google
Medium
Software Engineer Locked

Sliding Window Average After Dropping the Largest Values

Compute one average per fixed-size sliding window after removing exactly the largest k values, counting duplicates separately. Support negative number...

Coding & AlgorithmsTwo Pointers & Sliding WindowHeaps & Priority Queues
27
1
215 people solved
May 23, 2026
Google logo
Google
Medium
Software Engineer Locked

Min boards to cover roof holes

This question evaluates competency in combinatorial optimization and problem modeling for coverage constraints, testing algorithmic reasoning, complex...

Coding & AlgorithmsGraphs
21
1
205 people solved
Feb 12, 2026
Google logo
Google
Medium
Software Engineer

Find top/bottom-k words in list or stream

You are given words (strings) either as a finite list or as an unbounded stream. 1) List version: Given an array words and an integer k, return: - the...

Coding & AlgorithmsHeaps & Priority QueuesBatch & Stream Processing
20
1
208 people solved
Jan 11, 2026
DoorDash logo
DoorDash
Medium
Machine Learning Engineer

Design a scalable recommendation serving system

Scenario You are designing the online serving infrastructure for a large-scale recommendation system (e.g., a delivery app or e-commerce feed). The in...

System DesignMLOps & Model ServingCaching
10
0
183 people solved
Oct 17, 2025
ZipHQ logo
ZipHQ
Medium
Software Engineer

Find flush and straight groups in cards

You are given an array of strings cards, where each string represents a distinct playing card. Each card string has the format <rank><suit>: - rank is...

Coding & AlgorithmsArrays & Strings
52
0
371 people solved
Nov 28, 2025
Lyft logo
Lyft
Medium
Data Scientist

Investigate Sudden Metric Changes and Design A/B Test

Investigate Sudden Metric Changes and Design A/B Test Scenario A core business metric (e.g., conversion, cancellations, or gross bookings) shows a sud...

Analytics & ExperimentationMetric DiagnosticsExperiment Design (A/B Testing)
69
0
165 people solved
Aug 4, 2025
Capital One logo
Capital One
Medium
Data Scientist

Calculate Profitability and Evaluate Partnership for Credit Card Portfolio

Calculate Profitability and Evaluate a Partnership for a Credit Card Portfolio You are analyzing a mature credit-card portfolio to assess current prof...

Analytics & ExperimentationBusiness Case Analysis
102
0
378 people solved
Jul 12, 2025
SoFi logo
SoFi
Medium
Software Engineer

Design market price change notifications

Design a system that notifies users when market prices change for the symbols they track. Context and requirements: - Users maintain a watchlist of sy...

System DesignReal-Time SystemsMessaging & Event-Driven
15
0
211 people solved
Feb 4, 2026
Meta logo
Meta
Hard
Software Engineer AI

Solve Two Backtracking Array Problems

You will solve two independent coding problems. For each problem, first discuss edge cases, then implement a correct solution, and finally explain how...

Coding & AlgorithmsBacktracking & RecursionTwo Pointers & Sliding Window
40
0
324 people solved
Apr 27, 2026
Hulu logo
Hulu
Medium
Data ScientistSenior+ Locked

Interpret a Streaming Regression Without Overstating Causality

Learn to explain regression coefficients and confidence intervals to a product partner without turning association into causation. Examine confounding...

Analytics & Experimentation
1
0
20 people solved
Jun 7, 2026
Airbnb logo
Airbnb
Medium
Software Engineer Locked

Compute board-game score from regions

This question evaluates grid traversal and connected-component identification skills along with region-based aggregation (counting cells and summing c...

Coding & AlgorithmsGrids & Matrices
46
1
559 people solved
Feb 12, 2026
Microsoft logo
Microsoft
Medium
Software Engineer

Solve binary-search knapsack & graph shortest path

Question Given a sorted list of items, design an efficient solution (using binary search) to achieve the target objective instead of a dynamic-program...

Coding & Algorithms
10
0
106 people solved
Aug 4, 2025
Bloomberg logo
Bloomberg
Medium
Software Engineer

Solve string dictionary and tree ordering

Part A — One-edit dictionary: Build a data structure supporting build(words: List[str]) and search(query: str) -> bool that returns true if and only i...

Coding & AlgorithmsTreesString Algorithms
10
0
111 people solved
Sep 6, 2025
Waymo logo
Waymo
Easy
Data Scientist Locked

Implement nested template string substitution

This question evaluates understanding of string processing, dependency resolution, recursive expansion, cycle detection, and efficiency techniques suc...

Coding & AlgorithmsParsing & InterpretersGraphs
25
1
188 people solved
Jan 17, 2026
Snowflake logo
Snowflake
Hard
Software Engineer Locked

Clarify and Prune an N-ary Tree to a Depth Limit

Clarify an ambiguous N-ary tree task involving maximum depth and minimum deletion under a depth limit. Compare distinct deletion-cost contracts, prese...

Software Engineering Fundamentals
7
0
75 people solved
Jun 20, 2026
Amazon logo
Amazon
Medium
Software Engineer

Model an Extensible Employee Cost Calculator

Design an object model and calculation API for the total cost of an employee. Total cost has four components: 1. Base salary from the employee record....

Software Engineering Fundamentals
4
0
30 people solved
Feb 2, 2026
Uber logo
Uber
Medium
Software Engineer Locked

Compute sums and maximum path in a tree

This question evaluates understanding and implementation of binary tree traversal, recursion, aggregation of node values, and computation of maximum s...

Coding & AlgorithmsTreesDynamic Programming
6
0
85 people solved
Feb 11, 2026
Google logo
Google
Medium
Software Engineer

Maximize coins collected by 3-step pieces

You are given a 1D board of length N. Each cell is in one of three states: - Empty - Piece (a movable token) - Coin (collectible) In one move, you may...

Coding & AlgorithmsSimulation & State Machines
7
0
116 people solved
Sep 5, 2025
Previous1...298299300...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