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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
Peakflo logo
Peakflo
Medium
Product Manager

AP Product Design: Auto-Reconciling POs, Receipts and Invoices and Routing Mismatches

Design a product that automates three-way matching in the procure-to-pay process. Before a vendor invoice is paid, it should be checked against the pu...

Product Design & StrategyProduct SenseRequirements & Launch Execution
0
0
5 people solved
Jan 15, 2026
Apple logo
Apple
Medium
Frontend Engineer Locked

Explain JavaScript Scope, Closures, Timers, and the Event Loop

Explain JavaScript execution order through scope, closures, host APIs, the event loop, task queues, and microtasks. The interview also examines var ve...

Software Engineering Fundamentals
4
0
80 people solved
Jul 13, 2026
eBay logo
eBay
Medium
Software Engineer Locked

Explain Redis/MySQL internals and containers vs VMs

This question evaluates understanding of backend system internals and operational tooling—specifically in-memory datastore architecture (Redis), relat...

Software Engineering FundamentalsDatabase InternalsContainers & Orchestration
10
0
83 people solved
Feb 12, 2026
QuitSure logo
QuitSure
Medium
Product Manager

QuitSure Revenue Strategy: Choosing a Business Model for a Quit-Smoking App

QuitSure is a mobile app that helps people quit smoking. As its product manager, propose how the app should make money, and explain how you would choo...

Product Design & StrategyGrowth & MonetizationProduct Strategy
1
0
8 people solved
Oct 10, 2025
Robinhood logo
Robinhood
Medium
Data Scientist

Identify Overlapping Sessions and Optimize Coverage

Identify Overlapping Sessions and Optimize Coverage Scenario During the technical screen, candidates must implement interval algorithms used in fraud-...

Coding & AlgorithmsIntervals & SchedulingDynamic Programming
18
0
162 people solved
Aug 4, 2025
Optiver logo
Optiver
Easy
Quantitative Researcher

Fermi Estimation with Confidence Intervals: How Many Houses Does One Year of US Netflix Spending Buy?

Estimate how many houses could be purchased with the total amount that people in the United States spend on Netflix subscriptions in one year. You sta...

Machine Learning
6
0
84 people solved
Jul 26, 2025
Meta logo
Meta
Hard
Data Scientist

Design experiment for unconnected content in feed

Analytics & Experimentation Case: Socialness of Friends vs Unconnected Content Context You work on a personalized feed that shows posts from friends a...

Analytics & Experimentation
5
0
48 people solved
Oct 13, 2025
Google logo
Google
Hard
Product Manager

Market Sizing & Revenue Diagnostics

Market Sizing and Revenue Diagnostics Answer a multi-part Product Manager case covering market sizing, company revenue estimation, regional strategy d...

Product / Decision MakingEstimation & Market SizingBusiness Case Analysis
28
0
128 people solved
Jul 4, 2025
Uber logo
Uber
Medium
Product Manager

Uber payments decision: risks of accepting cash for rides and the cash-trip user journey

You are a product manager at Uber, and the team is considering letting riders pay for trips with cash. Explain how you would decide whether to add cas...

Product / Decision MakingProduct Design & Improvement
0
0
6 people solved
Oct 9, 2025
Meta logo
Meta
Medium
Data Scientist

Tune fraud threshold under review capacity and costs

Fraud Triage Thresholding with Calibrated Scores Context You have a fraud model that outputs a calibrated score s ∈ [0, 1] per account, where s ≈ P(fa...

Machine Learning
6
0
58 people solved
Oct 13, 2025
Google logo
Google
Medium
Software Engineer

Walk resume and tackle hypotheticals

Resume Deep‑Dive and Leadership Hypotheticals (Software Engineer Onsite) Context You are asked to walk through two impactful projects from your resume...

Behavioral & Leadership
14
0
126 people solved
Sep 6, 2025
Coinbase logo
Coinbase
Easy
Data Scientist

Model Feature Adoption Probability for Users

Model Feature Adoption Probability for Users Feature Adoption Probability Modeling Context You are analyzing adoption of a new wallet feature. Each of...

Statistics & Math
6
1
68 people solved
Aug 4, 2025
Attentive logo
Attentive
Medium
Software Engineer Locked

Design a Scalable Catalog Service

Design a read-heavy catalog service with versioned items, draft and publish workflows, browse and search projections, cache behavior, and safe schema ...

System Design
8
0
72 people solved
Sep 2, 2026
TikTok logo
TikTok
Medium
Software Engineer

Compute waits and find distance-k node pairs

Part 1 — Array next-higher wait: Given an integer array A where A[i] is the measurement for day i (0-indexed), return an array W of the same length su...

Coding & Algorithms
5
0
54 people solved
Sep 6, 2025
Capital One logo
Capital One
Hard
Data Scientist

Use data to resolve an ambiguous problem

Behavioral + Technical: End‑to‑End Data Story (Ambiguous Problem) You are interviewing for a Data Scientist role. Describe an end‑to‑end instance wher...

Behavioral & Leadership
7
0
78 people solved
Oct 13, 2025
Google logo
Google
Medium
Software Engineer

Optimize 0/1 to bounded knapsack DP

Solve the 0/1 knapsack problem: given arrays weight[i], value[i] for i=0..n-1 and capacity W, return the maximum value and reconstruct one optimal set...

Coding & AlgorithmsDynamic Programming
12
0
185 people solved
Sep 6, 2025
Upstart logo
Upstart
Medium
Data Scientist Locked

Interpret A/B results with p-values and uncertainty

This question evaluates proficiency in statistical inference for A/B testing, covering confidence intervals, p-values, multiple-testing correction (Be...

Statistics & MathExperiment Analysis & ReadoutHypothesis Testing
6
0
133 people solved
Oct 13, 2025
NVIDIA logo
NVIDIA
Medium
Software Engineer

Implement 2D convolution using NumPy slicing

Implement 2D convolution on a 4×4 input and a 3×3 filter with stride 1 using NumPy. Avoid explicit Python loops by relying on array slicing, broadcast...

Data Manipulation (SQL/Python)
7
0
49 people solved
Sep 6, 2025
Snapchat logo
Snapchat
Medium
Machine Learning Engineer

Find nearest room; extend to two users

You are given an m×n grid where 1 is a wall (impassable), 0 is an empty cell, and 2 is a meeting room. From a starting coordinate [r, c], you may move...

Coding & Algorithms
5
0
93 people solved
Aug 13, 2025
Amazon logo
Amazon
Medium
Data Scientist

Design a Churn Model: Handle Missing Data and Justify

Design a Churn Model: Handle Missing Data and Justify Churn Prediction on Messy Subscription Data Context You are building a binary churn-prediction m...

Machine Learning
4
0
78 people solved
Aug 4, 2025
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