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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
Product Manager

Define Success Metrics for Meta Video Calling: North Star, Funnel and Guardrails

You are the product manager responsible for video calling at Meta. Define what success looks like for this product: the goal video calling serves, the...

Analytics & ExperimentationMetrics & KPIsUser Behavior & Funnels
0
0
6 people solved
May 11, 2026
Generalmotors logo
Generalmotors
Hard
Machine Learning Engineer Locked

Count Islands in a Grid

This question evaluates skills in graph traversal and grid connectivity detection, testing competency in reasoning about adjacency, state management, ...

Coding & Algorithms
4
0
49 people solved
Mar 14, 2026
Fidelity logo
Fidelity
Medium
Software Engineer

Compare Spring and Spring Boot

Compare Spring and Spring Boot What are the differences between Spring Framework and Spring Boot? Compare configuration approaches, auto-configuration...

Coding & Algorithms
7
0
87 people solved
Jul 31, 2025
Coinbase logo
Coinbase
Easy
Data Scientist

Determine Conditions for Multiplying Event Probabilities in Statistics

Determine Conditions for Multiplying Event Probabilities in Statistics Scenario You are modeling multiple, distinct risk events in Coinbase Wallet (e....

Statistics & Math
4
0
81 people solved
Aug 4, 2025
Roblox logo
Roblox
Easy
Data Scientist Locked

Compute diff-in-diff and pretrend flag

This question evaluates understanding of difference-in-differences estimation, simple pretrend detection, and related data-processing competencies for...

Analytics & Experimentation
8
0
65 people solved
Oct 3, 2025
Schneider Electric logo
Schneider Electric
Medium
Software EngineerIntern

Explain the MVC architectural pattern

Explain the Model–View–Controller (MVC) architectural pattern. Include in your answer: 1. What each component is responsible for: - Model - View...

Software Engineering Fundamentals
9
0
69 people solved
Dec 8, 2025
Meta logo
Meta
Medium
Product Manager

Product Sense: Which Student Problems Should WhatsApp Solve, and How?

You are a product manager at WhatsApp, and you are asked to design WhatsApp for students. Decide which students you are building for, what problems th...

Product Design & StrategyProduct SenseMetrics & KPIs
0
0
8 people solved
Jul 5, 2026
ByteDance logo
ByteDance
Medium
Software EngineerIntern

Reverse Words While Preserving Spaces

Implement a C++ function that reverses the order of words in a string. Assume a word is any maximal sequence of non-space characters, and the input co...

Coding & Algorithms
13
0
93 people solved
Mar 29, 2026
Natoora logo
Natoora
Medium
Data Analyst

Why use LLMs for daily summaries?

On your résumé you say that you built an automated pipeline using LangChain and an LLM to generate daily summary reports. The interviewer challenges w...

Machine Learning
4
0
79 people solved
Feb 11, 2026
PayPal logo
PayPal
Hard
Data Scientist

Design a fraud mitigation strategy under constraints

You are given a one-page case during a hiring manager round for a Fraud Data Scientist role. Current state: - The existing fraud model is performing p...

Analytics & ExperimentationBusiness Case AnalysisModel Evaluation
10
0
90 people solved
Jan 2, 2026
Instacart logo
Instacart
Medium
Data Scientist

Solve a challenge using data

Tell Me About a Time You Solved a High-Stakes Problem With Data You are interviewing for a Data Scientist role and the hiring manager asks you to demo...

Behavioral & LeadershipProject Deep DiveExperiment Design (A/B Testing)
13
0
113 people solved
Oct 13, 2025
Deshaw logo
Deshaw
Hard
Software Engineer

Explain and Compare SGD and Adam

Explain and Compare SGD and Adam Explain how stochastic gradient descent updates model parameters and how Adam modifies those updates using moving est...

Machine Learning
3
0
57 people solved
Apr 20, 2026
Coinbase logo
Coinbase
Medium
Software Engineer Locked

Select transactions to maximize fees under size

This question evaluates the ability to model and optimize resource allocation under capacity constraints, testing algorithmic skills in dynamic progra...

Coding & AlgorithmsDynamic Programming
55
0
420 people solved
Feb 11, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Troubleshoot a website outage with disk full

This question evaluates operational incident response and systems troubleshooting skills, including understanding of disk/storage behavior, log and me...

Software Engineering Fundamentals
5
0
68 people solved
Jan 5, 2026
Meta logo
Meta
Medium
Product Manager

Facebook Rental Search Product: Renter Pain Points, Trust and a First Version

Suppose Facebook decided to build a product that helps people find a home to rent. As the product manager, describe what it would look like: whom it s...

Product Design & StrategyProduct SenseTrust & Safety
1
0
7 people solved
Feb 20, 2026
Amazon logo
Amazon
Hard
Data Scientist

Describe Managing an End-to-End Project for Scalability

Describe Managing an End-to-End Project for Scalability Context You are preparing for an Amazon interview that emphasizes Leadership Principles (LPs) ...

Behavioral & Leadership
12
0
93 people solved
Aug 4, 2025
Microsoft logo
Microsoft
Medium
Product Manager

Using your real weekly calendar to show how you already work like a PM

Pull up your actual calendar and take the interviewer through your current week. Then explain what the way you spend that time says about how you woul...

Behavioral & LeadershipMotivation & Fit
0
0
6 people solved
Jun 30, 2026
Meta logo
Meta
Medium
Data Scientist

Compute posterior fake probability using Bayes' rule

A platform runs an automated detector to flag fake accounts. - Prior probability an account is fake: \(P(F)=0.02\). - True positive rate (sensitivity)...

Statistics & Math
12
0
86 people solved
Oct 14, 2025
Capital One logo
Capital One
Medium
Data Scientist

Impute missing values without leakage

Given a DataFrame df with columns: user_id, event_date (datetime), country (categorical), device_type (categorical), age (numeric), income (numeric), ...

Data Manipulation (SQL/Python)
2
0
32 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Product Manager

Choose and Design a Product for the 2028 Los Angeles Summer Olympics Host Committee

You sit on the organizing committee for the 2028 Summer Olympic Games in Los Angeles. What product would you build? `hint Start from what the host is ...

Product Design & StrategyProduct Sense
0
0
3 people solved
Feb 12, 2026
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