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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
Hard
Data Scientist

Design metrics and experiment

Context You are the data scientist designing success metrics and an experiment for a new subscriber-only feature in a consumer subscription product (e...

Analytics & Experimentation
4
0
48 people solved
Oct 13, 2025
Capital One logo
Capital One
Medium
Data Scientist

Design a better water bottle and test it

Propose 10 mutually exclusive design improvements for a commuter-focused reusable water bottle (e.g., insulation, grip, cap mechanism, filter, materia...

Analytics & Experimentation
4
0
51 people solved
Oct 13, 2025
Hard
Data Scientist

Tune metrics for imbalanced classification

Fraud Detection With Rare Positives (0.5%) and Messy Data You are designing a supervised transaction-level fraud detector. Positives (fraud) are rare ...

Machine Learning
5
0
56 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Product Manager

Lifting trial-to-subscription conversion for a multi-device VPN app

You own a consumer VPN product. New users start on a free trial, and a paid subscription lets a user run the VPN on multiple devices. The metric you a...

Product Design & StrategyGrowth & MonetizationUser Behavior & Funnels
0
0
5 people solved
Apr 25, 2024
Google logo
Google
Medium
Product Manager

Shrinking the space Gmail takes up: goals, levers and trade-offs

As a product manager on Gmail, you are asked to reduce Gmail's storage size. How would you approach the problem, what changes would you make, and how ...

Product Design & StrategyProduct Design & ImprovementTechnical Tradeoffs for PMs
0
0
5 people solved
Dec 3, 2023
Lucid Motors logo
Lucid Motors
Medium
Product Manager

Favorite Product Deep Dive & UX Focus

Favorite Product Deep Dive and UX Improvement Case You will be assessed on product sense, UX judgment, and metrics thinking. Answer in three parts: a ...

Product / Decision Making
12
0
80 people solved
Jul 4, 2025
Google logo
Google
Medium
Product Manager

Fermi estimate: data throughput of a jumbo jet carrying CDs across the Atlantic

A Boeing 747 is packed with CD-ROMs and flown across the Atlantic. Treat the trip as a way of moving data and estimate the bandwidth it delivers, in b...

Product / Decision MakingEstimation & Market Sizing
0
0
5 people solved
Dec 7, 2024
Meta logo
Meta
Medium
Product Manager

Instagram Video Calling: Goals, Metrics and a Launch Experiment Plan

You are a product manager at Instagram, and the team is about to launch video calling. Explain how you would test the feature before it reaches everyo...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
0
0
4 people solved
Feb 3, 2024
Microsoft logo
Microsoft
Medium
Product Manager

Estimation exercise: total daily message volume on Slack

Estimate how many messages are sent on Slack in one day. `hint Workdays matter Slack is a work tool, so think about how a typical weekday differs from...

Product / Decision MakingEstimation & Market Sizing
0
0
4 people solved
Jan 10, 2025
Google logo
Google
Medium
Product Manager

Google in Fuel Retail: Choosing a Driver Product and Scoping Its MVP

Imagine Google decides to get into the gas station business. What product or service should it build, and what would the minimum viable version of tha...

Product Design & StrategyProduct StrategyProduct Sense
0
0
4 people solved
Jul 11, 2024
PayPal logo
PayPal
Hard
Data Scientist Locked

Build a real-time ATO model

This question evaluates a candidate's competency in designing low-latency, production-grade real-time machine learning systems for account-takeover de...

Machine Learning
7
0
73 people solved
Oct 13, 2025
Oracle logo
Oracle
Medium
Software EngineerSenior+

Behavioral: simplifying a complicated product or system and proving it worked

"Tell me about a complicated product that you made simpler." In this loop, behavioral questions filled about ten minutes of nearly every round, and in...

Behavioral & LeadershipInnovation & Simplification
0
0
7 people solved
Apr 3, 2026
Microsoft logo
Microsoft
Medium
Product Manager

Smartphone Lock Screen Redesign: Choose a User Problem and Prove the Impact with Metrics

You are the product manager responsible for the screen people see when they wake a locked smartphone. Propose changes that would make that experience ...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
0
0
6 people solved
Jun 8, 2024
Microsoft logo
Microsoft
Medium
Product Manager

Microsoft Teams Product Improvement: Choose a User Group and Fix Its Biggest Pain Point

You are a product manager on Microsoft Teams, Microsoft's workplace app for chat, channels, meetings, calls and file sharing. The interviewer asks a s...

Product Design & StrategyProduct Design & Improvement
0
0
4 people solved
Jul 20, 2024
Coinbase logo
Coinbase
Hard
Data Scientist

Estimate Super Bowl QR ad sign-ups

Incremental Sign-ups From a Super Bowl QR Ad (48h) CoinFactory ran a 60-second Super Bowl TV spot on 2025-02-09 with a QR code to a signup page. Succe...

Analytics & Experimentation
6
0
55 people solved
Oct 13, 2025
Mavenclinic logo
Mavenclinic
Medium
Software Engineer Locked

Design an appointment scheduling system

This question evaluates system-design competencies such as API design, data modeling, concurrency control, scalability, and notification handling, and...

System Design
9
0
71 people solved
Feb 22, 2026
Meta logo
Meta
Medium
Product Manager

Meta Ads Manager: investigating an overnight 10% fall in the ad publish rate

You are the product manager for Meta's Ads Manager, the tool advertisers use to create ad campaigns for Facebook. Publishing is one step in that creat...

Analytics & ExperimentationMetric Diagnostics
0
0
11 people solved
Feb 14, 2025
Meta logo
Meta
Medium
Product Manager

Deciding Facebook's Political Ad Policy: Weighing Access, Integrity and Revenue

You are a product manager at Meta, and the question on the table is whether Facebook should allow political advertising. Take a position and defend it...

Product Design & StrategyTrust & SafetyProduct Strategy
1
0
8 people solved
Oct 17, 2024
Meta logo
Meta
Medium
Product Manager

Product redesign of Houseparty, the drop-in group video chat app for friends

Houseparty is a group video chat app for friends: when someone opens it, their friends are notified and can drop into their video room. As the product...

Product Design & StrategyProduct Design & Improvement
0
0
5 people solved
Jan 1, 2025
Freddie Mac logo
Freddie Mac
Medium
Machine Learning EngineerSenior+

Improve Trust in a RAG System

You own an enterprise retrieval-augmented generation system used for high-stakes document question answering, such as mortgage underwriting, legal rev...

ML System Design
4
0
59 people solved
Mar 29, 2026
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