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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
Medium
Data Scientist

Interpreting confidence intervals to choose a treatment

Feed-ranking Tweaks: Interpret Confidence Intervals and Choose a Treatment You ran online experiments for three feed-ranking tweaks. The primary metri...

Analytics & ExperimentationExperiment Analysis & ReadoutHypothesis Testing
15
0
102 people solved
Jul 12, 2025
Meta logo
Meta
Hard
Data Scientist Locked

Design a restaurant recommender under constraints

This question evaluates a candidate's competency in designing scalable machine learning recommender systems, covering retrieval and ranking architectu...

Machine Learning
5
0
51 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Software Engineer

Implement encoding validation and grid shortest path

Part A — Byte-encoding validation: You are given an array of integers in [0, 255] representing bytes. Determine whether the sequence encodes valid cha...

Coding & Algorithms
7
0
70 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software Engineer Locked

Solve counting and frequency coding tasks

This question evaluates algorithmic skills in counting, frequency analysis, constraint-based pair counting, and stream-oriented tokenization and ranki...

Coding & Algorithms
4
0
57 people solved
Jan 5, 2026
Meta logo
Meta
Medium
Product Manager

Explain Horizontal vs. Vertical Integration With Examples and Strategic Trade-offs

Explain the difference between horizontal integration and vertical integration as growth strategies. Define each, support the definitions with real ex...

Product Design & StrategyProduct Strategy
0
0
7 people solved
Jun 29, 2024
LinkedIn logo
LinkedIn
Hard
Data Scientist

LinkedIn Product Case Opportunity Sizing

LinkedIn Product Case: Segmentation, Opportunity Sizing, and Adoption Prediction You are interviewing for a Data Scientist role focused on analytics a...

Analytics & ExperimentationSegmentation & Cohort AnalysisEstimation & Market Sizing
14
0
120 people solved
Apr 30, 2025
Google logo
Google
Medium
Product Manager

Envisioning a Refrigerator from Google: Users, Features and Success Metrics

You are a product manager asked to design a refrigerator from Google. Explain what the product should achieve, choose who it is for, propose and prior...

Product Design & StrategyProduct SenseProduct Strategy
0
0
6 people solved
Jan 18, 2024
Google logo
Google
Medium
Product Manager

Physical product redesign: rethinking the ceiling fan for a user group you choose

You are a product manager asked how you would redesign the ceiling fan. Choose who you are designing for and where the fan is used, work out what toda...

Product Design & StrategyProduct Design & ImprovementProduct Sense
0
0
6 people solved
Mar 18, 2024
Snapchat logo
Snapchat
Medium
Software Engineer

Describe improving workflow and challenges

Behavioral: Improving a Team's Development Workflow You are a software engineer in a technical screen. Answer using a concise, structured story (e.g.,...

Behavioral & LeadershipOwnership & Execution
5
0
100 people solved
Aug 13, 2025
Meta logo
Meta
Medium
Product Manager

Meta Payments in India and Southeast Asia: success metrics as average ticket size falls

You are the product manager for Meta Payments. Since Meta Payments launched in India and Southeast Asia, the average amount per transaction has fallen...

Analytics & ExperimentationMetrics & KPIsBusiness Case Analysis
0
0
4 people solved
Jan 7, 2026
Amazon logo
Amazon
Medium
Software Engineer

Find odd-frequency element with O(1) space

You're given an integer array where exactly one value appears an odd number of times and all other values appear an even number of times. Implement a ...

Coding & Algorithms
7
0
56 people solved
Aug 9, 2025
Pinterest logo
Pinterest
Medium
Data Scientist Locked

Evaluate Carousel and Billboard Lift

This question evaluates experiment design, causal inference, metric definition, diagnostic analysis, and measurement validity within the Analytics & E...

Analytics & ExperimentationExperiment Design (A/B Testing)Causal Inference
22
0
165 people solved
Jan 11, 2026
Instacart logo
Instacart
Medium
Software Engineer

Pivot transactions by date without date libs

Given a stream of transaction rows (shopper_id, date_str, amount) where date_str is ISO format 'YYYY-MM-DD', produce a pivoted report for a specified ...

Data Manipulation (SQL/Python)
4
0
38 people solved
Sep 6, 2025
Tools For Humanity logo
Tools For Humanity
Easy
Data Scientist

Detect and evaluate "stolen" posts

You are a Data Scientist at a Twitter-like app. The platform suspects an increase in “stolen posts” (users reposting/plagiarizing others’ content with...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
9
0
93 people solved
Aug 29, 2025
Google logo
Google
Medium
Product Manager

Product Sense: Designing a Payments Product Aimed at Italian Teenage Boys

As a PM, you are asked to build a payment product whose target users are teenage boys living in Italy. Describe who it serves, what it does, and how y...

Product Design & StrategyProduct Sense
0
0
4 people solved
Jun 29, 2024
Uber logo
Uber
Medium
Product Manager

Designing a Driver Incentive Program for a Ride-Hailing Marketplace

You are the manager put in charge of designing an incentive structure for the drivers of a cab aggregator, a ride-hailing app that connects riders wit...

Product Design & StrategyGrowth & MonetizationBusiness Case Analysis
0
0
7 people solved
Feb 15, 2024
Google logo
Google
Medium
Product Manager

Sizing Google's Product Management Workforce

How many product managers does Google employ? Build the estimate out loud: explain how you structure it, label each assumption, and finish with a figu...

Product / Decision MakingEstimation & Market Sizing
0
0
6 people solved
Mar 28, 2024
DoorDash logo
DoorDash
Medium
Software Engineer Locked

Debug and harden a driver-selection component

This question evaluates debugging skills and data-structure implementation competency, focusing on heap/priority-queue behavior, constructor initializ...

Software Engineering FundamentalsDebuggingTesting & Quality
23
0
276 people solved
Jan 2, 2026
Amazon logo
Amazon
Medium
Software Engineer

Reflect on self, goals, learning, competitions

Prepare structured behavioral answers for these interview questions: 1. Give three words that accurately describe you as a professional, and illustrat...

Behavioral & Leadership
7
0
55 people solved
May 28, 2025
Meta logo
Meta
Medium
Software Engineer

Find mode or minimum with time-space tradeoffs

For an unsorted array of integers, implement two functions: ( 1) return the minimum value; ( 2) return the value that appears most frequently (the mod...

Coding & Algorithms
7
0
57 people solved
Sep 6, 2025
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