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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
Business AnalystNew Grad Locked

Design profitability growth plan

Build a profitability growth plan for a grocery loyalty-card business, covering revenue and costs, customer segments, constraints, and three initiativ...

Analytics & Experimentation
4
0
51 people solved
Oct 13, 2025
Shopee logo
Shopee
Medium
Product Manager

Root-Cause a Refund Failure Affecting a Small Group of Shopee Buyers

A small number of buyers on Shopee's online marketplace say they are unable to get a refund, while refunds for other buyers appear to work. You are a ...

Analytics & ExperimentationMetric Diagnostics
1
0
10 people solved
Oct 11, 2025
Uber logo
Uber
Medium
Software Engineer Locked

Evaluate an Arithmetic Expression

This question evaluates proficiency in parsing arithmetic expressions, handling unary and binary operators, parentheses, whitespace, numeric tokenizat...

Coding & Algorithms
3
0
29 people solved
May 1, 2026
Capital One logo
Capital One
Hard
Data Scientist

Build a causal ML pipeline end-to-end

Policy Targeting from Causal Inference to Production Context You completed a causal-inference project estimating the effect of a binary marketing trea...

Analytics & Experimentation
3
0
68 people solved
Oct 13, 2025
ByteDance logo
ByteDance
Medium
Software EngineerNew Grad Locked

Choose Between REST, WebSocket, and Server-Sent Events for an Agent Runtime

Choose an interface for an agent runtime that accepts jobs, streams progress, supports cancellation, and survives client reconnects. Compare ordinary ...

Software Engineering Fundamentals
2
0
28 people solved
Aug 13, 2026
Google logo
Google
Medium
Product Manager

How a Perceptron Computes and Learns: The Single-Neuron Linear Classifier

Explain what a perceptron is and how it turns a set of inputs into a decision. `hint Follow one input through Describe what happens to a single input ...

Machine LearningNeural Networks & TrainingSupervised Learning
0
0
7 people solved
May 26, 2025
Meta logo
Meta
Medium
Software Engineer

Discuss project pride, conflict, and pivots

Discuss project pride, conflict, and pivots Behavioral & Leadership (Technical Screen) Context You are a software engineer in a technical screen that ...

Behavioral & Leadership
4
0
75 people solved
Aug 7, 2025
Concentric Ai logo
Concentric Ai
Medium
Software Engineer Locked

Minimize Population-Weighted Manhattan Travel Cost

Choose an integer grid meeting point that minimizes population-weighted Manhattan travel cost, returning the minimum cost and the lexicographically sm...

Coding & Algorithms
4
0
30 people solved
Aug 10, 2026
Amazon logo
Amazon
Medium
Frontend EngineerNew Grad Locked

Own a Mistake with Real Consequences

Tell a concrete story about a consequential mistake by owning the decision, tracing its impact, containing harm, communicating candidly, and showing t...

Behavioral & Leadership
1
0
17 people solved
Aug 22, 2026
Microsoft logo
Microsoft
Medium
Product Manager

ESPN.com Traffic Down 30%: Diagnose the Cause and Decide What to Do

You are the product manager for ESPN's website, and web traffic has fallen by 30%. What would you do? `hint Pin the baseline first Sports traffic rise...

Analytics & ExperimentationMetric Diagnostics
0
0
7 people solved
Jan 19, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Compute dot product of sparse vectors

This question evaluates proficiency with sparse data representations and algorithmic efficiency by requiring the dot product to be computed from lists...

Coding & Algorithms
5
0
50 people solved
Jan 18, 2026
Capital One logo
Capital One
Medium
Data Scientist

Segment 500k users into three groups

Churn-Risk Segmentation to Maximize Expected 90-Day Revenue You must segment 500,000 users into three contiguous groups along a churn-risk score, orde...

Analytics & Experimentation
4
0
83 people solved
Oct 13, 2025
LinkedIn logo
LinkedIn
Medium
Software Engineer

Compare heap and stack memory

Compare heap and stack memory. Explain how each is allocated and freed, typical lifetimes of data stored there, access patterns and performance charac...

Coding & AlgorithmsMemory Management
6
0
123 people solved
Sep 6, 2025
Google logo
Google
Medium
Product Manager

Diagnose the speed gap between Gmail inbox search and Google web search

Searching your mailbox in Gmail often feels slower than running a Google web search, even though one inbox is a tiny fraction of the size of the web. ...

System DesignTechnical Tradeoffs for PMsSearch & Feed Systems
1
0
13 people solved
Feb 17, 2024
Capital One logo
Capital One
Medium
Product Manager

First-Year P&L Measurement for a Newly Launched Capital One Product

You are a product manager at Capital One, and a new product has just launched. How would you measure whether it makes or loses money over its first tw...

Analytics & ExperimentationBusiness Case AnalysisCausal Inference
1
0
9 people solved
May 8, 2025
Coinbase logo
Coinbase
Medium
Software Engineer

Count users over n connections

Count users over n connections Given a stream of relationship events in the form [[user_a, user_b, op], ...], where op ∈ {"connect", "disconnect"}, tr...

Coding & Algorithms
12
0
88 people solved
Aug 7, 2025
DoorDash logo
DoorDash
Hard
Data Scientist

Evaluate Account-Partner Onboarding with Success Metrics

Evaluate Account-Partner Onboarding with Success Metrics Scenario DoorDash's account-partner team acquires new merchants onto the marketplace, and lea...

Analytics & ExperimentationCausal InferenceMetrics & KPIs
94
0
313 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Product Manager

Design a Meta product for learning to play an instrument without in-person lessons

You are a product manager at Meta. The CEO wants a new product that helps people learn to play a musical instrument remotely. What would you build? Ex...

Product Design & StrategyProduct SenseMetrics & KPIs
0
0
6 people solved
Jun 2, 2026
Cohere logo
Cohere
Medium
Product Manager

Accountability, Safety and Fairness Risks of Autonomous AI Agents in Critical Decisions

What ethical risks come with deploying AI agents, systems that plan and carry out multi-step tasks with little human input, in high-stakes settings wh...

Machine LearningAI Product ManagementAI Agents
0
0
6 people solved
Apr 10, 2026
Google logo
Google
Medium
Data Scientist

Adjust YouTube Ad Scores Using Mixed-Effects Linear Regression

Adjusting YouTube Ad Scores with Mixed-effects Regression One hundred reviewers each rate the same 100 YouTube ads on a 1 to 10 scale. Some reviewers ...

Machine LearningRegression & Statistical Modeling
14
0
140 people solved
Jul 12, 2025
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