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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
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Design a real-time 3D playback system for recorded vehicle logs

Design a system that plays back recorded vehicle log data as an interactive 3D scene. Each recorded drive is a set of logs of time-stamped data stored...

System DesignFile & Media StorageCaching
15
0
127 people solved
Sep 2, 2026
Apple logo
Apple
Medium
Software Engineer

Simulate a Fixed-Capacity Least-Recently-Used Cache over a Stream of Operations

Implement a key-value cache that holds at most capacity entries and, when it is full, evicts the entry that was used least recently. Run the cache ove...

Coding & AlgorithmsData Structure Design
6
0
77 people solved
Sep 17, 2026
Airbnb logo
Airbnb
Medium
Machine Learning EngineerSenior+ Locked

Redact Document Phrases with Simultaneous Replacement

Redact document phrases with a replacement map, whole-word matching, longest-match overlap rules, and one-pass replacement of original text.

Coding & AlgorithmsArrays & Strings
31
0
215 people solved
Sep 4, 2026
Verkada logo
Verkada
Medium
Frontend Engineer Locked

Implement a Camera List UI from a Defined Visual Contract

Implement a responsive React camera-card list with fixed preview ratios, status and missing-image states, semantic selection, and a clear visual-verif...

Software Engineering FundamentalsCSS & LayoutReact & UI Frameworks
5
0
60 people solved
Sep 15, 2026
Roblox logo
Roblox
Medium
Software Engineer

Match-3 Grid: Find Horizontal and Vertical Runs, Then Clear and Drop Cells

You are given an m × n grid of positive integers representing a Match-3 game board. A match is a run of 3 or more equal values side by side in one row...

Coding & AlgorithmsGrids & MatricesSimulation & State Machines
12
1
86 people solved
Aug 5, 2026
Faire logo
Faire
Medium
Product Manager

Faire Marketplace: Generating and Sizing Profitability Levers Before Committing to One

You are a product manager at Faire, the online wholesale marketplace that connects independent brands with independent retail stores. Pick a product t...

Product / Decision MakingGrowth & MonetizationBusiness Case Analysis
2
0
16 people solved
Oct 15, 2026
Roblox logo
Roblox
Medium
Software Engineer Locked

Design a Real-Time Shared To-Do List

Design a collaborative to-do list with durable edits, real-time updates, reconnect recovery, ordering, and explicit conflict handling. The discussion ...

System Design
47
0
324 people solved
Aug 31, 2026
Capital One logo
Capital One
Medium
Software EngineerSenior+ Locked

Design Credit-Card Authorization, Limit Decisions, and Reporting

Design credit-card login, fraud-aware authorization, spending views, limit decisions, and monthly reporting with idempotency and clear service boundar...

System DesignPayments & LedgersDistributed Transactions & Idempotency
46
1
332 people solved
Aug 23, 2026
AMD logo
AMD
Medium
Software Engineer

C++ Code Reading: Bug in a Linked-List insertAfter and Predicting Polymorphic Output

This round handed out short C++ programs and asked you to read them: find a bug, predict the exact output, and explain why. The exact snippets used in...

Software Engineering FundamentalsProgramming LanguagesDebugging
3
0
40 people solved
Oct 9, 2026
Pinterest logo
Pinterest
Hard
Software Engineer Locked

List All Plus/Times Expressions Reaching a Target Under Operator Precedence

Return every expression formed by placing plus or times between adjacent numbers, kept in order, that equals a target under standard operator preceden...

Coding & AlgorithmsBacktracking & Recursion
8
0
106 people solved
Sep 2, 2026
Mercor logo
Mercor
Medium
Software Engineer Locked

Design a Project-to-Contractor Matching System

Design a two-sided project and contractor matching system with hard eligibility rules, capacity-aware ranking, cold-start exploration, and outcome-bas...

System Design
47
0
595 people solved
Aug 30, 2026
Google logo
GoogleWaymoAmazon

Also asked at Amazon, Meta, Bloomberg, Microsoft, Upstart, Okta

Medium
Software Engineer

Answer Immutable Rectangle Sums in Constant Query Time

Problem Implement NumMatrix(matrix) and sumRegion(row1,col1,row2,col2). Return the sum inside the rectangle including both its upper-left and lower-ri...

Coding & AlgorithmsData Structure DesignGrids & Matrices
3
0
24 people solved
Microsoft logo
Microsoft
Medium
Software Engineer

Greedy and Top-k Beam Search Decoding That Returns the Sentence Probability

A sequence model generates a sentence one token at a time. You are given its next-step probability distribution: for any prefix of tokens generated so...

Machine LearningHeaps & Priority QueuesNatural Language Processing
5
0
55 people solved
Sep 22, 2026
Together AI logo
Together AI
Easy
Software Engineer Locked

Investigate a Server Saturated by Logging

Trace logging-related server saturation through resource attribution, producer/sink behavior, bounded queues, rotation and retention, and verified mit...

Software Engineering FundamentalsDebuggingObservability
12
1
203 people solved
Sep 15, 2026
Palo Alto Networks logo
Palo Alto Networks
Medium
Product Manager

Explain the Server-Side Stack of an AI App: Orchestration, Retrieval and Model Serving

As a product manager candidate, you are asked to explain how an AI product works behind the scenes. Choose a product, name its main backend components...

System DesignTechnical Tradeoffs for PMsLLM Applications
2
0
19 people solved
Oct 3, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Design Large Model-Weight Distribution to GPU Workers

Design a platform that distributes immutable model-weight artifacts of up to hundreds of gigabytes across thousands of GPU workers. Address version in...

System DesignFile & Media StorageMLOps & Model Serving
33
0
446 people solved
Aug 5, 2026
ServiceNow logo
ServiceNowGoogleOracle
Hard
Software Engineer

Count Fixed-Length Playlists That Use Every Song with a Replay Gap

Problem Create an ordered playlist of length goal from n distinct songs. Every song must appear at least once. After a song is played, at least k othe...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
1
0
22 people solved
Databricks logo
Databricks
Hard
Software EngineerSenior+ Locked

Design a Durable Concurrent Event Writer

Design a thread-safe local event writer shared by thousands of producers appending opaque records to one file. Define ordering and return guarantees w...

System DesignConcurrency
47
2
403 people solved
Jul 7, 2026
Anthropic logo
Anthropic
Hard
Machine Learning Engineer Locked

Deploy a Large Model to GPU Workers

Design a fast, reliable way to distribute a 500 GB model artifact to hundreds or thousands of GPU workers. Compare direct fan-out, pipelines, and tree...

System DesignFile & Media Storage
240
1
1681 people solved
Jul 8, 2026
Google logo
Google
Medium
Software Engineer

Longest Non-Decreasing Subarray After One Replacement

Given an integer array nums, return the maximum length of a contiguous non-decreasing subarray obtainable after changing at most one array element to ...

Coding & AlgorithmsArrays & StringsDynamic Programming
12
1
79 people solved
Aug 26, 2026
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