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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
Meta logo
Meta
Easy
Data Scientist

How would you compare Facebook vs Instagram Stories?

You work on short-form ephemeral content. Both Facebook Stories and Instagram Stories exist, and leadership asks: Which product should we invest in, a...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
14
0
121 people solved
Nov 1, 2025
Meta logo
Meta
Medium
Product Manager

Metrics Framework for a PM Who Owns Instagram's Ad Product

You are the product manager who owns ads on Instagram. Explain which metrics you would track to understand how the ad product is performing, how those...

Analytics & ExperimentationMetrics & KPIs
1
0
8 people solved
Nov 13, 2023
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Design a RAG-Based Agent System

This question evaluates a candidate's competency in designing end-to-end Retrieval-Augmented Generation (RAG) systems and LLM-based agents, covering r...

ML System DesignSystem Design FundamentalsRetrieval-Augmented Generation
9
0
118 people solved
Jun 3, 2026
Binance logo
Binance
Medium
Product Manager

Deciding What to Work On First When There Is No Evidence to Rank By

Your team has more tasks and requests than it can take on, and there is no data to show which of them matter most. How would you decide what to work o...

Behavioral & LeadershipPrioritization & TradeoffsAmbiguity & Decision Making
0
0
7 people solved
Dec 17, 2025
Coinbase logo
Coinbase
Medium
Product Manager

Coinbase Metric Diagnosis: Finding Why Daily Active Users Fell 10%

Coinbase's daily active users (DAU) have fallen by 10%. As the product manager, walk through how you would work out why. `hint Order the checks Confir...

Analytics & ExperimentationMetric DiagnosticsSegmentation & Cohort Analysis
0
0
9 people solved
Jan 19, 2024
Google logo
Google
Medium
Product Manager

Day-One PM Plan for a Tenfold Jump in Google Home Device Sales

Leadership wants Google Home sales to reach ten times their current level. It is your first day as the product manager who owns Google Home. How would...

Product Design & StrategyGrowth & MonetizationProduct Strategy
0
0
5 people solved
May 31, 2024
Pinterest logo
Pinterest
Medium
Product Manager

Root-Cause Analysis of a 20% Single-Day Decline in YouTube Engagement Time

Time spent on YouTube fell 20% compared with the previous day. Explain what you would do: how you would work out why it dropped, and how you would res...

Analytics & ExperimentationMetric DiagnosticsSegmentation & Cohort Analysis
1
0
9 people solved
Jan 7, 2026
Microsoft logo
Microsoft
Medium
Product Manager

Count 10-Inch Pizzas Laid Edge to Edge Around Earth's Equator

Estimate how many pizzas it would take to form a ring all the way around the Earth along the equator. Assume each pizza is 10 inches across, and that ...

Product / Decision MakingEstimation & Market Sizing
0
0
5 people solved
Oct 12, 2025
Uber logo
Uber
Medium
Data Scientist

Determine Sample Size for Promotion Campaign A/B Test

Determine Sample Size for Promotion Campaign A/B Test Scenario Uber plans to launch a promotion campaign and wants to evaluate its effectiveness with ...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
74
0
198 people solved
Aug 4, 2025
Amazon logo
Amazon
Medium
Product Manager

Making 200+ Packages per Driver Shift Achievable in Last-Mile Delivery

You are a product manager at Amazon. How would you make sure a single delivery driver can get more than 200 packages delivered within an 8-hour day? `...

Product / Decision MakingOperations & Capacity
0
0
5 people solved
May 27, 2025
Meta logo
Meta
Medium
Product Manager

Go-to-Market Plan for Growing Notion Across European Markets

You are a product manager at Notion, and the company wants to grow its business in Europe. How would you approach the expansion? `hint Europe is many ...

Product Design & StrategyProduct StrategyGrowth & Monetization
0
0
5 people solved
Dec 3, 2024
J.P. Morgan logo
J.P. Morgan
Medium
Product Manager

Behavioral: getting buy-in from people who do not report to you

Product managers rarely manage the engineers, designers and partner teams whose work they depend on. How do you get people to support your direction w...

Behavioral & LeadershipLeadership & InfluenceCommunication & Stakeholders
0
0
8 people solved
Dec 13, 2023
Amazon logo
Amazon
Medium
Software Engineer

Compute peak parking lot occupancy intervals

You are given logs from a parking lot system. Each log entry has the form: [carId, time, eventType] - carId is an integer identifying a car. - time is...

Coding & AlgorithmsIntervals & SchedulingSorting
8
0
139 people solved
Dec 2, 2025
HubSpot logo
HubSpot
Medium
Machine Learning EngineerSenior+

Discuss compensation expectations and level

HR Screen: Compensation Expectations for a Senior Machine Learning Engineer Context: In an initial HR screen for a senior-level Machine Learning Engin...

Behavioral & Leadership
8
0
81 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software Engineer

Explain key ML metrics and techniques

You are asked a set of short conceptual machine learning questions. 1. Confusion matrix and metrics For a binary classification problem: - Defin...

Machine Learning
8
0
83 people solved
Dec 8, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Design a hierarchical path registry

Design a hierarchical path registry Implement an in-memory hierarchical path registry. Support: create(path, value) to create a new path with an integ...

Coding & Algorithms
7
0
85 people solved
Jul 28, 2025
Meta logo
Meta
Medium
Machine Learning Engineer Locked

Maximize unique characters from a word list

This question evaluates algorithmic problem-solving skills focused on combinatorial subset selection and character-uniqueness constraints in strings, ...

Coding & AlgorithmsBacktracking & RecursionArrays & Strings
12
0
96 people solved
Feb 12, 2026
Meta logo
Meta
Medium
Product Manager

Future Apple Device Concept: Features, Enabling Tech and Ecosystem Fit

Imagine you are on Apple's product team, planning what the company could unveil five to six years from now. Propose a new product for that launch: who...

Product Design & StrategyProduct SenseProduct Strategy
0
0
6 people solved
Aug 16, 2025
TikTok logo
TikTok
Medium
Machine Learning Engineer

Fix a BST with two misplaced keys

Fix a BST with two misplaced keys You are given the root of a binary search tree in which exactly two nodes’ keys were accidentally swapped. Restore t...

Coding & Algorithms
8
0
57 people solved
Aug 8, 2025
Microsoft logo
Microsoft
Hard
Software Engineer Locked

Implement a sliding-window rate limiter allow()

This question evaluates understanding of sliding-window rate limiting, time-windowed counting, and per-user state management for high-throughput servi...

Coding & Algorithms
7
0
68 people solved
Feb 11, 2026
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