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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
C3 AI logo
C3 AI
Hard
Data Scientist Locked

Keep Gradient Descent from Stalling at Poor Solutions

Diagnose gradient descent that appears stuck. Separate local minima, saddles, plateaus, poor conditioning, learning-rate problems, and code defects, t...

Machine Learning
2
0
32 people solved
Aug 21, 2026
Coinbase logo
Coinbase
Medium
Data Scientist

Estimate Super Bowl QR Code Scan Rate Using Historical Data

Estimate Super Bowl QR Code Scan Rate Using Historical Data Estimating QR Scan and Sign-up Conversion for a Super Bowl TV Ad Scenario A Super Bowl TV ...

Analytics & Experimentation
93
0
272 people solved
Aug 4, 2025
Meta logo
Meta
Hard
Data Scientist

Derive and validate DID for staggered rollout

Causal Effect of a Staggered Adoption Policy Across EU Regions You cannot randomize. An intervention is rolled out at different dates across EU region...

Statistics & Math
9
0
78 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Product Manager

Matching Mentors and Mentees: A Facebook Product Design Case

You are a product manager at Meta. Design a product on Facebook that helps people find mentors and get real value from mentorship. Explain who it serv...

Product Design & StrategyProduct SenseGrowth & Monetization
0
0
8 people solved
Jul 9, 2026
Akuna Capital logo
Akuna Capital
Hard
Software Engineer

Fix and harden an object pool

Fix and harden an object pool Refactor a Buggy C++ Object Pool Into a Correct, Thread-Safe Template Context You are given a buggy C++ object pool that...

System DesignConcurrencyMemory Management
14
0
192 people solved
Aug 10, 2025
TikTok logo
TikTok
Medium
Data Scientist

Identify Repeat Advertisers from Consecutive Weeks

SUBMISSIONS +--------------+-----------+-----------+ | advertiser_id| ad_id | week_id | +--------------+-----------+-----------+ | A123 ...

Data Manipulation (SQL/Python)
3
0
28 people solved
Aug 4, 2025
Airbnb logo
Airbnb
Medium
Software Engineer Locked

Simulate pouring water onto terrain

This question evaluates a candidate's ability to implement a discrete simulation and perform array manipulation while correctly handling deterministic...

Coding & AlgorithmsSimulation & State Machines
37
4
267 people solved
Feb 11, 2026
Meta logo
Meta
Easy
Software Engineer

Describe background and job motivations

Behavioral HR Screen: Self-Introduction, Role, Motivation, and Company Fit Context - Scenario: HR screen for a Software Engineer role. - Goal: Concise...

Behavioral & Leadership
10
0
117 people solved
Sep 6, 2025
Apple logo
Apple
Medium
Software Engineer Locked

Explain Runnable vs Callable and thread-safe Singleton

This question evaluates a candidate's knowledge of Java concurrency and design patterns, specifically distinctions between Runnable and Callable, mech...

Software Engineering FundamentalsConcurrencyProgramming Languages
18
0
153 people solved
Jan 17, 2026
Upstart logo
Upstart
Medium
Data Scientist

Navigate Conflicting Priorities in Cross-Functional Collaboration

Navigate Conflicting Priorities in Cross-Functional Collaboration Behavioral Interview: Cross-Functional Collaboration, Trade-offs, and Working Style ...

Behavioral & Leadership
23
0
127 people solved
Aug 4, 2025
DRW logo
DRW
Easy
Data Scientist

Derive eigenvalues and sum for inverse matrix

Derive eigenvalues and sum for inverse matrix Eigenvalues of an Inverse and Their Sum Context Let A be an invertible n×n matrix (over the real or comp...

Statistics & Math
11
0
74 people solved
Jul 28, 2025
Meta logo
Meta
Easy
Data Scientist

Handle feedback, change pivots, and conflict

Question In the behavioral portion of the Meta Data Scientist screen, answer the following leadership prompts using concrete examples from your own wo...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
5
0
100 people solved
Feb 16, 2026
Capital One logo
Capital One
Hard
Data Scientist

Optimize amusement park pricing, capacity, and testing

Context You are interviewing for a Data Scientist role focused on analytics and experimentation. An amusement park is considering launching a paid Fas...

Analytics & ExperimentationBusiness Case AnalysisExperiment Design (A/B Testing)
11
0
113 people solved
Oct 13, 2025
Airbnb logo
Airbnb
Medium
Product Manager

Airbnb Mission, Belonging & Hosting

Behavioral Interview Prompt: Airbnb Mission, Belonging, and Hosting You are interviewing for a Product Manager role. This prompt assesses mission alig...

Behavioral & LeadershipMotivation & FitProduct Sense
31
0
207 people solved
Jul 4, 2025
Furtherai logo
Furtherai
Medium
Machine Learning EngineerSenior+

Motivation for an Early-Stage AI Startup, Hands-On AI Experience, and Startup Fit

This interview loop includes two conversational rounds that test motivation and fit for a staff-level applied AI engineering role at an early-stage st...

Behavioral & LeadershipMotivation & Fit
1
0
15 people solved
Aug 30, 2026
Pinterest logo
Pinterest
Medium
Data Scientist

Decode and Explain Ambiguity in Compression Strings

Scenario Compression library that encodes an array as count-value pairs where value is one digit but count may be many digits. Question Implement deco...

Coding & Algorithms
19
0
77 people solved
Jul 12, 2025
Amazon logo
Amazon
Medium
Software Engineer

Determine string segmentability with dictionary

Determine string segmentability with dictionary Given a string s and a dictionary of words, determine whether s can be segmented into a sequence of di...

Coding & Algorithms
8
0
72 people solved
Aug 8, 2025
Capital One logo
Capital One
Medium
Data Scientist

Estimate Venmo Revenue and Boost User Engagement Metrics

Estimate Venmo Revenue and Boost User Engagement Metrics Growth and Monetization Case: Venmo (Peer-to-Peer Payments) Context You are evaluating growth...

Analytics & Experimentation
7
0
65 people solved
Aug 4, 2025
Shure logo
Shure
Medium
Product Manager

Explaining Your Motivation to Build Audio Products at Shure as a PM

You are interviewing for a product manager role at Shure, the audio equipment company. The interviewer asks why you want to work there. `hint Start fr...

Behavioral & LeadershipMotivation & Fit
1
0
10 people solved
May 23, 2025
PayPal logo
PayPal
Medium
Data ScientistSenior+ Locked

Why does the CLT matter?

The question evaluates a candidate's understanding of the Central Limit Theorem and related competencies in probabilistic reasoning, estimation, and c...

Statistics & Math
6
0
52 people solved
Mar 14, 2026
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