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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
Hard
Data Scientist

Brainstorm how to optimize email engagement

Lifecycle Email: Increase Incremental On‑Site Engagement You own lifecycle email for a large consumer app and are tasked with increasing on‑site engag...

Analytics & Experimentation
4
0
61 people solved
Oct 13, 2025
Google logo
Google
Medium
Product Manager

Montreal Grocery Store Entry Decision and Self-Checkout vs Staffed Lane Mix

A large Canadian grocery chain wants to open its first store in Montreal. Should it go ahead, and if it does, what mix of self-checkout kiosks and sta...

Product / Decision MakingProduct StrategyOperations & Capacity
0
0
3 people solved
Nov 15, 2025
Google logo
Google
Medium
Product Manager

Estimation: How Many Miles of Road Does Google Maps Cover?

Estimate how many miles of road Google Maps covers. Count linear miles: each stretch of road is counted once however many lanes it has, so a four-lane...

Product / Decision MakingEstimation & Market Sizing
0
0
5 people solved
Jul 9, 2024
DoorDash logo
DoorDash
Medium
Data Scientist Locked

Design Biker metrics and A/B test plan

Design an evaluation plan for a pilot bicycle-courier delivery mode in dense urban zones, with one primary efficiency metric, secondary metrics, and g...

Analytics & Experimentation
4
0
42 people solved
Oct 13, 2025
Tubi logo
Tubi
Hard
Data Scientist Locked

Handle multiple experiment metrics and communication

This question evaluates a data scientist's competency in experimental design and analysis, including hypothesis hierarchy, multiple-testing control, p...

Analytics & Experimentation
5
0
58 people solved
Oct 13, 2025
Upstox logo
Upstox
Medium
Product Manager

Estimate India's Yearly Paint Demand Across Homes, Buildings and Industry

Estimate how much paint is used in India. Unless the interviewer specifies otherwise, give a yearly figure. State the unit you choose, break the estim...

Product / Decision MakingEstimation & Market Sizing
0
0
7 people solved
Nov 8, 2025
Meta logo
Meta
Hard
Data Scientist

Design Messenger spam experiment with clustering

Experiment Design: Spam-Detection Algorithm for Messenger You are evaluating a new spam-detection algorithm that routes suspected spam into a separate...

Analytics & Experimentation
6
0
72 people solved
Oct 13, 2025
Uber logo
Uber
Hard
Data Scientist

Design ETA prediction for Uber rides

System Design: Real‑Time Pickup and Drop‑off ETA Prediction Context: You’re designing an end‑to‑end system that predicts pickup and drop‑off ETAs at t...

Machine LearningML System DesignExperiment Design (A/B Testing)
16
0
155 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Product Manager

Touch-First Spreadsheet App: Target Users, Core Jobs and Small-Screen Editing

You are a product manager asked to design a spreadsheet product for mobile phones. Explain who it is for, which spreadsheet tasks it must handle well ...

Product Design & StrategyProduct Sense
0
0
4 people solved
Oct 30, 2024
Lucid Motors logo
Lucid Motors
Medium
Product Manager

Roadmap for Collecting and Using Connected EV Sensor Data in Future Vehicle Programs

You are the product manager for an electric vehicle that carries many onboard sensors. Lay out a strategy and roadmap for using the data those sensors...

Product Design & StrategyRoadmapping & PlanningTechnical Tradeoffs for PMs
0
0
4 people solved
Feb 12, 2025
Meta logo
Meta
Medium
Data Scientist Locked

Decide event notification launch via experiments

Design an experimentation plan to decide whether to launch a notification telling users which friends are going to an event, covering randomization, m...

Analytics & Experimentation
3
0
47 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Product Manager

Plan how Meta should earn revenue from Facebook Marketplace

You are a product manager at Meta. Facebook Marketplace is the widely used part of Facebook where people list items for sale near them and arrange dea...

Product Design & StrategyGrowth & MonetizationExperiment Design (A/B Testing)
0
0
5 people solved
Mar 6, 2025
Powerplay logo
Powerplay
Medium
Product Manager

Note-Taking App Design: Picking a Target User, MVP and Success Metrics

Design a note-taking app. Explain who you would build it for, which of their problems the app should solve, which features you would ship first and wh...

Product Design & StrategyProduct SenseMetrics & KPIs
0
0
6 people solved
Nov 26, 2025
Amazon logo
Amazon
Medium
Product Manager

How you judge the wider effects of your product work beyond business metrics

How do you think about the effect your work has on the world? `hint Show the habit, not the value Rather than a statement of values, describe how you ...

Behavioral & LeadershipEthics & Responsibility
0
0
3 people solved
Oct 12, 2024
Meta logo
Meta
Medium
Data Scientist

Resolve cross-team conflict and align incentives

Behavioral & Leadership: Cross-Team Conflict With Tight Timeline You are a Data Scientist interviewing for an onsite role. Describe a realistic cross-...

Behavioral & Leadership
5
0
58 people solved
Oct 13, 2025
Google logo
Google
Medium
Product Manager

Market Sizing: Yearly US Online Revenue From Fruit and Vegetable Purchases

How much money is spent each year on fruits and vegetables bought online in the United States? Build an estimate, state each assumption as you go, and...

Product / Decision MakingEstimation & Market Sizing
0
0
4 people solved
Aug 23, 2024
Google logo
Google
Medium
Product Manager

Back-of-envelope sizing of YouTube's global server fleet

Estimate how many servers YouTube needs to run. Treat it as a back-of-envelope exercise: break the problem into parts, give each assumption a round nu...

Product / Decision MakingEstimation & Market SizingSystem Design Fundamentals
0
0
6 people solved
Sep 12, 2024
Meta logo
Meta
Medium
Product Manager

Facebook product design: bringing ride sharing to its users, from model to first version

You are a product manager at Facebook, asked to design a ride-sharing app that lives within Facebook. Explain what kind of ride sharing makes sense fo...

Product Design & StrategyProduct SenseProduct Strategy
0
0
4 people solved
Apr 6, 2024
Meta logo
Meta
Hard
Data Scientist

Decide when CTR falls but revenue rises

Ads-Ranking A/B Test: Decision, Decomposition, Diagnostics, and Exec Readout Context You ran a user-level A/B test of a new ads-ranking model. The tre...

Analytics & ExperimentationExperiment Analysis & ReadoutMetrics & KPIs
11
0
92 people solved
Oct 13, 2025
Google logo
Google
Medium
Product Manager

Picking the Google Cloud Proof Points for a Customer Weighing a Move From Azure

A prospective customer runs its workloads on Microsoft Azure and is evaluating a move to Google Cloud. As a product manager on Google Cloud, choose th...

Product Design & StrategyMarket & Competitive Analysis
0
0
7 people solved
Oct 27, 2025
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