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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
Anthropic logo
Anthropic
Medium
Software Engineer

Design One-to-One Chat

Design a scalable one-to-one chat system. Scope: - Only direct one-to-one messaging is required. - Group chat, public channels, workspace features, an...

System DesignReal-Time SystemsMessaging & Event-Driven
64
1
583 people solved
Mar 2, 2026
NVIDIA logo
NVIDIA
Easy
Software Engineer

Return all file paths via DFS

You are given an in-memory representation of a file system as a tree. Each node has: - name (string) - isFile (boolean) - children (list of nodes, emp...

Coding & AlgorithmsTrees
39
0
280 people solved
Mar 4, 2026
Apple logo
Apple
Medium
Software Engineer

Design a Distributed Blob Cache With Index Metadata Kept in a Database

Design a distributed caching service for a storage infrastructure team. What sets this design apart is that the service must also keep index metadata ...

System DesignCachingConsistency & Availability
5
0
36 people solved
Jul 13, 2026
Imc logo
Imc
Hard
Quantitative TraderNew Grad

Compute the Probability for Two Uniform Variables

Let \(X\) and \(Y\) be independent random variables, each uniformly distributed on \([0,1]\). Define: - \(L = \max(X,Y)\) - \(S = \min(X,Y)\) What is ...

Software Engineering FundamentalsProbabilityPuzzles & Brainteasers
19
0
197 people solved
Mar 5, 2026
DoorDash logo
DoorDash
Medium
Software Engineer Locked

Find the Minimum Delivery Processing Speed

Find the minimum positive integer processing speed that completes indivisible delivery orders within a whole-hour deadline, or report impossibility wh...

Coding & Algorithms
7
1
63 people solved
May 26, 2026
Google logo
GoogleAmazonMicrosoft

Also asked at Microsoft, Meta, Bloomberg, Infosys, TCS

Easy
Software Engineer

Preprocess Immutable Inclusive Array Range Sums

Problem Implement NumArray(vector<int>& nums) and sumRange(left,right). The array remains unchanged after construction; each query returns the sum ove...

Coding & AlgorithmsData Structure DesignArrays & Strings
1
0
11 people solved
Netflix logo
Netflix
Medium
Software Engineer

Design ad frequency capping

Design an Ad Frequency Capping System Design a frequency capping system for an advertising platform. The system must ensure that a user does not see t...

System DesignAds SystemsRate Limiting
602
4
5575 people solved
Apr 15, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Implement Parallel Image Processing

Build an image-processing utility in Python using the Pillow library. You are given a collection of image file paths and an output directory. For each...

Coding & Algorithms
21
0
259 people solved
Mar 2, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Present a Technical Project to a Cross-Functional Audience

Plan a 20-minute project deep dive for engineers outside your domain, balancing business value with defensible technical detail. Structure the narrati...

Behavioral & LeadershipCommunication & StakeholdersProject Deep Dive
25
0
172 people solved
Jul 3, 2026
Amazon logo
AmazonMicrosoftGoogle

Also asked at Google, Bloomberg, NVIDIA, Meta, Oracle, Snowflake, Morgan Stanley, Arista Networks, Adobe, Flipkart, Walmart Labs, TikTok, Intel

Medium
Software Engineer

Copy List Nodes with Next and Arbitrary Random Links

Problem Deep-copy a linked list whose nodes contain val, next, and random. A random link can point to any node in the list, including itself, or to nu...

Coding & AlgorithmsLinked Lists
0
0
11 people solved
Applied Intuition logo
Applied Intuition
Hard
Backend Engineer Locked

Resolve Dependent Addition Equations

Solve dependent addition equations while detecting undefined references and cyclic dependencies. Define a deterministic, portable output contract and ...

Coding & Algorithms
5
0
84 people solved
Aug 4, 2026
Roblox logo
Roblox
Medium
Product Manager

Design Cross-Server Real-Time Chat Translation for Roblox Players

Roblox players speak many languages, and the company already has a machine learning model that can translate text. Design the system that uses it so p...

System DesignAI Product ManagementReal-Time Systems
2
0
18 people solved
Jul 20, 2026
Google logo
Google
Medium
Software Engineer Locked

Find A Threshold-Limited Path With Minimum Required Safety

Practice a graph path interview problem that asks for the minimum required safety value along a threshold-limited path. The prompt targets minimax pat...

Coding & AlgorithmsGraphs
27
5
179 people solved
Jul 6, 2026
Nubank logo
Nubank
Easy
Software Engineer Locked

Design a chargeback ingestion and export system

This question evaluates system design skills around reliable ingestion and scheduled export of financial transaction records, specifically testing com...

System DesignPayments & LedgersDistributed Transactions & Idempotency
33
0
260 people solved
Jun 4, 2026
MongoDB logo
MongoDB
Medium
Product Manager

Unblocking engineers when the PM's decisions and specs slow the team down

As a product manager, how do you deal with becoming the bottleneck for your engineering team, so that engineers are waiting on you before they can mov...

Behavioral & LeadershipOwnership & Execution
0
0
10 people solved
Oct 9, 2026
New Relic logo
New Relic
Medium
Backend Engineer

Compress a String by Run-Length Counts, Keeping the Original When Not Shorter

Implement basic string compression based on runs of repeated characters. Replace every maximal run of consecutive identical characters with that chara...

Coding & AlgorithmsArrays & Strings
2
0
21 people solved
Sep 23, 2026
Perplexity logo
Perplexity
Medium
Software Engineer Locked

Implement Dependency-Aware To-Do List

This question evaluates the ability to design in-memory data structures and algorithms for representing tasks with directed dependencies, manage state...

Coding & Algorithms
32
0
230 people solved
May 29, 2026
PayPal logo
PayPal
Medium
Product Manager

Propose a New PayPal Offering to Grow Its Gen Z User Base

You are interviewing for a product manager role at PayPal. The interviewer says PayPal wants to bring more Gen Z users onto its platform and asks whic...

Product Design & StrategyProduct SenseGrowth & Monetization
1
0
10 people solved
Sep 21, 2026
Squarepoint logo
Squarepoint
Medium
Software Engineer Locked

Explain Core Python Runtime and Language Concepts

Review core Python concepts through a production-engineering lens: generators, decorators, threads versus processes, mutability, and context managers....

Software Engineering Fundamentals
21
0
178 people solved
Jul 12, 2026
Mixpanel logo
Mixpanel
Medium
Data Scientist

Validate Features That Predict User Retention

Validate Features That Predict User Retention You have user records with signup time and plan type, plus timestamped user events. You are asked which ...

Machine LearningFeature EngineeringModel Evaluation
2
0
21 people solved
Sep 9, 2026
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