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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
Capital One logo
Capital One
Medium
Data Scientist

Evaluate payback and sensitivity for solar vs ethanol pilots

Renewable Pilot Evaluation — Payback and Sensitivity Context Two 1-year-operated pilot plants are being considered to add renewable capacity. Assume s...

Statistics & Math
7
0
64 people solved
Oct 13, 2025
Upstart logo
Upstart
Hard
Data Scientist

Implement PAVA spend-smoothing under no-borrowing constraint

Monotone Spending Plan via Isotonic L2 Regression (No-Borrowing) Context: You observe yearly discretionary income profit[1..65] (nonnegative reals) an...

Statistics & MathRegression & Statistical ModelingML Coding
13
0
125 people solved
Oct 13, 2025
Amazon logo
Amazon
Easy
Software Engineer Locked

Design a Scalable News Feed

Design a scalable home feed for a social product where users publish posts and follow other accounts. The discussion compares fanout strategies and ex...

System Design
6
0
68 people solved
Jun 22, 2026
Apple logo
Apple
Hard
Data Scientist

Choose Optimal Network Retry Threshold

You work on a mobile music streaming team responsible for improving playback reliability while minimizing battery drain. When the app is streaming aud...

Analytics & ExperimentationMetrics & KPIsExperiment Design (A/B Testing)
9
0
111 people solved
Mar 14, 2026
Google logo
Google
Medium
Product Manager

Sizing America's EV charging infrastructure: public sites, ports and home chargers

Estimate how many electric vehicle charging stations there are in the United States today. Explain what you are counting, the approach you choose, the...

Product / Decision MakingEstimation & Market Sizing
1
0
10 people solved
Dec 8, 2025
NVIDIA logo
NVIDIA
Medium
Software Engineer Locked

Explain Amdahl’s law and GPU matmul optimization

This question evaluates understanding of systems and performance fundamentals including parallel speedup (Amdahl’s law), GPU memory hierarchy and thre...

Software Engineering FundamentalsGPU ProgrammingProgramming Languages
9
0
110 people solved
Jan 14, 2026
Cisco logo
Cisco
Medium
Product Manager

Nest Camera Backend Design: Video Streaming, Cloud Storage and Motion Alerts

As a product manager for a connected home security camera like the Nest camera, you are asked to explain how you would design its cloud architecture a...

System DesignTechnical Tradeoffs for PMsSystem Design Fundamentals
0
0
10 people solved
Dec 26, 2024
Amazon logo
Amazon
Hard
Software EngineerSenior+

Discuss Ownership, Learning, Trust, Scope, and Delivery

Discuss Ownership, Learning, Trust, Scope, and Delivery Prepare evidence-based behavioral answers about ownership, learning, thinking broadly, earning...

Behavioral & Leadership
4
0
29 people solved
Jan 1, 2026
Walmart Labs logo
Walmart Labs
Medium
Product Manager

Behavioral: How You Handled a Peer or Report Whose Conduct Crossed the Line

In a behavioral interview for a product manager role at Walmart Labs, you are asked to describe a time when someone you worked with, either a peer or ...

Behavioral & LeadershipConflict & CollaborationEthics & Responsibility
0
0
9 people solved
Aug 25, 2025
ByteDance logo
ByteDance
Hard
Data EngineerNew Grad

Describe a challenging project and your role

You are interviewing for a new-grad software role. Answer the following behavioral prompts (BQ) based on one of your internship or project experiences...

Behavioral & LeadershipProject Deep DiveCommunication & Stakeholders
11
0
121 people solved
Jan 2, 2026
Yelp logo
Yelp
Medium
Product Manager

Detecting unannounced restaurant closures on Yelp's reservations product

You are the product manager for the restaurant reservations product on Yelp. During the COVID-19 pandemic, many restaurants are shutting down without ...

Product Design & StrategyProduct Design & Improvement
1
0
13 people solved
Apr 19, 2025
ByteDance logo
ByteDance
Medium
Software EngineerSenior+

Find Words in a Character Grid

Implement findWords(board, words) for a word-search game. You are given an m x n grid of lowercase English letters and a list of lowercase dictionary ...

Coding & Algorithms
2
0
31 people solved
Apr 14, 2026
Ford logo
Ford
Medium
Software Engineer

Design EV Telemetry Monitoring App

You are interviewing for a full-stack software role on an electric-vehicle team. Design an internal application that displays live vehicle telemetry, ...

System DesignReal-Time SystemsAI-Assisted Development
4
0
80 people solved
Jan 13, 2026
NewsBreak logo
NewsBreak
Medium
Machine Learning Engineer

Derive and implement calibration via temperature scaling

Derive and implement calibration via temperature scaling Temperature Scaling for Softmax Calibration Context You have a trained multi-class classifier...

Machine Learning
4
0
85 people solved
Aug 9, 2025
Adobe logo
Adobe
Medium
Software Engineer Locked

Traverse a path and print directory tree

This question evaluates proficiency with filesystem I/O, path validation, directory traversal, recursion and error handling in Node.js, plus the abili...

Coding & AlgorithmsOperating SystemsTrees
16
0
164 people solved
Feb 11, 2026
Conde Nast logo
Conde Nast
Medium
Product Manager

Explain How Ads Get Personalized: Signals, Targeting Models and Privacy Limits

You are interviewing for a product manager role at Conde Nast, and the interviewer asks a technical question: how would you tailor the ads people see ...

Machine LearningTechnical Tradeoffs for PMsPersonalization
0
0
7 people solved
Jul 5, 2025
LinkedIn logo
LinkedIn
Medium
Product Manager

Anonymous Posts on a Real-Identity Network: Advising LinkedIn's CEO on Build or Skip

LinkedIn's CEO is considering a feature that would let members publish posts without their name attached, and asks you, as a product manager, whether ...

Product Design & StrategyProduct StrategyTrust & Safety
1
0
8 people solved
Dec 30, 2025
Uber logo
Uber
Medium
Data ScientistNew Grad Locked

Model Driver Acceptance Probability

This question evaluates a candidate's competency in production machine learning system design and operationalization, including label definition and u...

Machine Learning
5
0
70 people solved
Feb 27, 2026
Twitch logo
Twitch
Hard
Data Scientist

Design real-time live-stream recommendations

Design a Real-Time Recommendation System for Live Streams Context: You are designing a recommender for a large live-streaming platform. Assume you hav...

Machine Learning
8
0
79 people solved
Oct 13, 2025
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Explain CAP, indexing, locks, and logs

This question evaluates knowledge of distributed systems concepts (CAP theorem), database internals (index types and logging), and concurrency control...

Software Engineering Fundamentals
7
0
55 people solved
Jan 2, 2026
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