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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
Google logo
GoogleUberRoku

Also asked at Roku, Adobe, Airbnb, PhonePe

Hard
Software Engineer

Find the Fewest Grid Moves Needed to Collect Every Key

Problem In grid, @ is the single start, . is empty floor, and # is a wall. Lowercase letters are keys and their uppercase versions are locks. Move one...

Coding & AlgorithmsGrids & MatricesGraphs
0
0
7 people solved
Shopify logo
Shopify
Medium
Software Engineer AI

Implement a Constant-Time LRU Cache

Implement a Constant-Time LRU Cache Implement a fixed-capacity least-recently-used cache. The captured source identifies an LRU cache coding problem b...

Coding & Algorithms
18
0
126 people solved
Apr 28, 2026
Google logo
GoogleMicrosoft
Medium
Software Engineer

Maximum Grid Path Score Within a Budget

Problem You are given an m by n integer grid and an integer budget k. Start at the top-left cell (0,0) and reach the bottom-right cell (m-1,n-1), movi...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
1
0
9 people solved
Uber logo
Uber
Medium
Data ScientistNew Grad Locked

Compute CDF from a PDF Function

This question evaluates a candidate's skills in numerical integration, applied numerical methods, and probability/statistics by requiring construction...

Coding & Algorithms
6
0
76 people solved
Apr 30, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Debug a failing ML classifier

Debugging a Churn Prediction Pipeline With Poor Generalization Context You have inherited a binary churn prediction system. The goal is to predict whe...

Machine LearningML FundamentalsModel Evaluation
85
0
714 people solved
Jul 28, 2025
xAI logo
xAI
Medium
Software Engineer Locked

Flatten and unflatten nested Python structures

This question evaluates proficiency in manipulating nested data structures, deterministic traversal and mapping between hierarchical shapes and flat i...

Coding & AlgorithmsBacktracking & RecursionProgramming Languages
14
0
165 people solved
Mar 1, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Design an in-memory database

Design an in-memory database System Design: In-Memory Key–Value Database for Ultra–Low Latency Context You are designing an in-memory, per-node key–va...

System DesignKey-Value StoresDatabase Internals
38
0
260 people solved
Jul 15, 2025
NVIDIA logo
NVIDIA
Hard
Software Engineer Locked

Implement short algorithms on logs, grids, and strings

This multi-part Coding & Algorithms question evaluates algorithmic problem-solving skills and mastery of core competencies including temporal window r...

Coding & AlgorithmsArrays & Strings
24
0
247 people solved
Feb 11, 2026
Amazon logo
Amazon
Easy
Software Engineer

Compute minimal operations and optimal server pairing

You are given two independent coding problems. Problem 1: Minimum range-increments to make an array nondecreasing Given an integer array power of leng...

Coding & AlgorithmsGreedySorting
27
0
201 people solved
Dec 17, 2025
Zscaler logo
Zscaler
Medium
Software EngineerSenior+ Locked

Reason About Remote Browser Isolation and Secure Media Delivery

Compare remote browser isolation, Zero Trust access, and VPN connectivity, then design secure delivery for large blobs and partially playable media. K...

Software Engineering Fundamentals
2
0
38 people solved
Jul 30, 2026
Google logo
GoogleASUSAmazonMeta

Also asked at Amazon, Meta

Hard
Software Engineer

Winner of the Optimal One-to-Three Stone Game

Problem Alice and Bob alternate taking the first 1,2,or 3 remaining stones, with Alice first. Each player adds the values taken to a score initially 0...

Coding & AlgorithmsDynamic Programming
0
0
6 people solved
Bloomberg logo
BloombergGoogle
Medium
Software Engineer

Count Ordered Equal-Distance Point Triples

Count Ordered Equal-Distance Point Triples You are given distinct points in the plane. Count ordered triples of distinct point indices (i,j,k) for whi...

Coding & AlgorithmsMath & Number TheoryArrays & Strings
0
0
5 people solved
Shopify logo
Shopify
Easy
Software EngineerSenior+ AI

Build a Local URL Shortener

Implement a local URL shortener that runs on a single machine. Design a small library or service with two core operations: - shorten(long_url) -> shor...

Coding & AlgorithmsData Structure Design
89
0
637 people solved
Jan 24, 2026
Meta logo
Meta
Medium
Data Engineer Locked

Write queries for follows and bookings

This question evaluates the ability to manipulate temporal event logs, enforce bidirectional relational integrity, and implement efficient graph and i...

Coding & AlgorithmsSQLIntervals & Scheduling
30
2
207 people solved
Mar 1, 2026
Google logo
Google
Easy
Data Scientist

Design tests to measure latency impact

Question You are a Data Scientist supporting a large consumer product (e.g., YouTube). Engineering ships a change intended to reduce client-side / vid...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
16
0
229 people solved
Oct 13, 2025
DoorDash logo
DoorDash
Medium
Software Engineer Locked

Build a Three-Service Refund Workflow over HTTP

Build three separately running HTTP services for orders, refunds, and a durable refund workflow expressed as a dependency graph. The exercise tests re...

Software Engineering FundamentalsMicroservices & Service ArchitectureAPI Design
20
0
207 people solved
Aug 4, 2026
Microsoft logo
MicrosoftGoogleAmazon

Also asked at Amazon, Meta, Bloomberg

Medium
Software Engineer

Compute the Chance of Finishing below a Score Limit

Problem Start at 0 points. While the score is below k, independently draw a uniformly random integer from 1 through maxPts and add it. Stop as soon as...

Coding & AlgorithmsDynamic ProgrammingProbability
1
0
10 people solved
Salesforce logo
Salesforce
Medium
Product Manager

Protecting Roadmap Commitments After a 10% Engineering Budget Reduction

You manage a product area at an enterprise software company, and its roadmap is already committed. You learn that your engineering budget is being cut...

Product / Decision MakingPrioritization & TradeoffsRoadmapping & Planning
1
0
9 people solved
Jul 10, 2026
Otter.Ai logo
Otter.Ai
Medium
Software EngineerSenior+

Design a Google Docs-Style Real-Time Collaborative Editing Backend

Design the backend of a collaborative document editor like Google Docs. Several users can open the same document at once and edit it in real time. Eac...

System DesignReal-Time SystemsConsistency & Availability
1
0
18 people solved
Aug 4, 2026
Salesforce logo
Salesforce
Medium
Product Manager

Incident Leadership for PMs: Restore, Communicate and Prevent After a Global Outage

You are the product manager for a product that has just caused an outage affecting customers around the world. How would you handle it? Walk through w...

Product / Decision MakingCommunication & StakeholdersReliability & SRE
1
0
10 people solved
Aug 5, 2026
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