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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
TikTok logo
TikTok
Medium
Software Engineer Locked

Solve common string/DP/stack problems

This set of four coding tasks evaluates proficiency in string algorithms, dynamic programming, sliding-window techniques, monotonic stack usage, and t...

Coding & AlgorithmsTwo Pointers & Sliding WindowDynamic Programming
13
0
174 people solved
Feb 12, 2026
Mintlify logo
Mintlify
Medium
Software EngineerSenior+

Recreate a Card Interface from a Screenshot

Recreate a Card Interface from a Screenshot Build a frontend component that matches a supplied screenshot of a card containing badges or chips. Explai...

Software Engineering Fundamentals
2
0
24 people solved
Apr 30, 2026
LinkedIn logo
LinkedIn
Easy
Software Engineer

Review a Web Application Architecture

You are given a high-level architecture diagram for a web application: Client/Web App -> DNS -> Load Balancer -> Application Service -> Database The a...

System DesignSystem Design FundamentalsFault Tolerance & Failover
17
0
164 people solved
Apr 11, 2026
Lyft logo
Lyft
Hard
Software Engineer

Design web crawler for 1000 devices

Design web crawler for 1000 devices Distributed Web Crawler: Design for 1,000 Devices Context Design a production-ready web crawler that starts from a...

System DesignSystem Design FundamentalsDistributed Coordination
29
0
200 people solved
Aug 4, 2025
xAI logo
xAI
Medium
Machine Learning Engineer

What are processes vs threads?

Question Explain the difference between multiprocessing and multithreading in the context of building concurrent applications. Cover the following: - ...

Software Engineering FundamentalsOperating Systems
41
0
275 people solved
Feb 12, 2026
Snapchat logo
Snapchat
Medium
Machine Learning EngineerNew Grad Locked

Design a Product Tagging Pipeline

This question evaluates applied machine learning system design, multi-modal modeling, data engineering, and production deployment competencies involve...

ML System Design
8
0
66 people solved
Feb 2, 2026
Freestone Grove logo
Freestone Grove
Medium
Software Engineer Locked

Explain an End-to-End Research and ML Pipeline

Prepare a structured Freestone Grove behavioral interview answer for explain an end-to-end research and ml pipeline. The prompt helps candidates frame...

Behavioral & Leadership
2
0
21 people solved
May 16, 2026
Snapchat logo
Snapchat
Hard
Software Engineer Locked

Determine escape path with blockers and spreading fire

This question evaluates graph traversal and grid-based pathfinding skills, including connectivity analysis, obstacle handling, and reasoning about tim...

Coding & Algorithms
5
0
86 people solved
Feb 11, 2026
Tekion logo
Tekion
Medium
Software EngineerSenior+ Locked

Maximize Profit with at Most K Transactions

Practice maximizing stock-trading profit under a transaction cap, one-position rule, and exact chronological semantics.

Coding & Algorithms
2
0
25 people solved
Aug 13, 2026
ByteDance logo
ByteDance
Hard
Site Reliability Engineer

How to triage slow service alerts

A production alert indicates that a web service is experiencing high latency or slow responses. As an SRE, describe how you would triage, investigate,...

Software Engineering FundamentalsReliability & SREObservability
23
0
176 people solved
Jan 27, 2026
NVIDIA logo
NVIDIA
Medium
Software Engineer

Reconstruct tree from inorder and postorder

Given two arrays representing the inorder and postorder traversals of a binary tree with unique values, reconstruct the original binary tree and retur...

Coding & Algorithms
13
0
98 people solved
Jul 29, 2025
Pinterest logo
Pinterest
Medium
Data Scientist

Implement and extend My Calendar III

Design and implement a booking system like LeetCode 732 (My Calendar III). Provide a class with methods: book(start, end) using half-open intervals [s...

Coding & AlgorithmsTreesIntervals & Scheduling
11
0
183 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Product Manager

Product Sense: Fixing a Core Pain Point in WhatsApp Group Chats

You are a product manager at Meta working on WhatsApp. Design a product or feature that improves how people communicate in WhatsApp groups. Choose whi...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
1
0
14 people solved
Sep 25, 2026
Figma logo
Figma
Hard
Software Engineer

Design a trending-articles platform

Design a Near Real-Time Trending-Articles Platform Design the backend that surfaces trending articles in near real time for a large-scale consumer pro...

System DesignSearch & Feed SystemsBatch & Stream Processing
43
0
502 people solved
Sep 6, 2025
StackAdapt logo
StackAdapt
Easy
Software Engineer

Design a time-windowed key-value store

Implement a time-windowed key-value store ("Windowed Map") that receives key/value updates at irregular times and only keeps entries from the most rec...

Coding & AlgorithmsData Structure DesignStacks & Queues
15
0
200 people solved
Mar 4, 2025
Perplexity logo
Perplexity
Medium
Product Manager

Plan a Staged Launch of a New AI Feature at Perplexity, From Dogfood to Full Release

Perplexity has built a new feature. Explain how you would take it from a finished build to full availability for the users it is meant for. `hint Let ...

Product Design & StrategyRequirements & Launch ExecutionAI Product Management
0
0
9 people solved
May 8, 2026
xAI logo
xAI
Hard
Machine Learning Engineer

Design a house-price prediction workflow

Design a house-price prediction workflow Predicting Home Sale Prices: End-to-End ML Design Context You have historical home-sale records with features...

Machine LearningML System DesignFeature Engineering
8
0
131 people solved
Jul 17, 2025
J.P. Morgan logo
J.P. Morgan
Medium
Data ScientistSenior+

Explain Core ML Concepts

You are interviewing for a senior AI/ML-oriented Data Scientist role at a financial institution (J.P. Morgan). This is the "ML fundamentals" portion o...

Machine LearningML FundamentalsSupervised Learning
33
0
241 people solved
Apr 24, 2026
Microsoft logo
Microsoft
Medium
Software Engineer

Design a Shared Proxy Layer That Cuts Microservices' API Call Costs

An organization runs many microservices, and a growing share of its operating cost comes from the API endpoints those services call. Design a proxy la...

System DesignSystem Design FundamentalsCaching
0
0
9 people solved
Apr 2, 2026
Google logo
Google
Medium
Data Scientist

Normalize Columns in Binomial Matrix Efficiently

Scenario Write code that creates a 100×100 matrix of Binomial(1, 0. 5) samples and normalizes each column so it sums to 1. Question Provide an efficie...

Coding & Algorithms
20
0
87 people solved
Jul 12, 2025
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