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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
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

Design and Test a Personalized Push Notification System for a News App

You are responsible for recommending notifications in a news app that already has an established audience. Walk the interviewer through the product, t...

System DesignProduct Design & ImprovementExperiment Design (A/B Testing)
0
0
11 people solved
Sep 24, 2024
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
Attentive logo
Attentive
Medium
Data Scientist

Apply Multiple Testing Corrections for Valid Results Analysis

Apply Multiple Testing Corrections for Valid Results Analysis Interpreting 30 Parallel A/B Tests With Mixed Results Context - You ran 30 independent w...

Analytics & Experimentation
82
0
203 people solved
Aug 4, 2025
Google logo
Google
Medium
Product Manager

Designing a New Product That Combines LEGO Bricks With Google's Technology

Imagine Google has acquired the LEGO Group. As a product manager, what new product would you create from the combination? Explain why the pairing crea...

Product Design & StrategyProduct SenseProduct Strategy
0
0
7 people solved
Aug 4, 2026
Amazon logo
Amazon
Medium
Product Manager

Amazon PM Behavioral: Changing Course on Stakeholder Evidence Without Losing Backbone

You are interviewing for a product manager role at Amazon. The interviewer asks for an example of a meeting in which input from your stakeholders made...

Behavioral & LeadershipConflict & CollaborationAmbiguity & Decision Making
0
0
7 people solved
Mar 23, 2026
Uber logo
Uber
Medium
Machine Learning Engineer

Design room progression with leaderboard

Design a data structure to simulate a sequence of rooms where players solve tasks and can move only to the next room once finished. Support the follow...

Coding & AlgorithmsHeaps & Priority QueuesData Structure Design
19
0
161 people solved
Sep 6, 2025
DRW logo
DRW
Easy
Data EngineerIntern Locked

Compute a Year-End Balance with Monthly Card Fees

Compute a 2020 bank account's year-end balance after all transactions and twelve monthly card-fee decisions, applying the waiver only when both paymen...

Coding & Algorithms
4
0
51 people solved
May 22, 2026
Coinbase logo
Coinbase
Medium
Software Engineer

Implement Composable Range Iterators

Implement an iterator library: range(start, end, step= 1) supporting forward/backward iteration, inclusive/exclusive endpoints, negative steps, and ov...

Coding & AlgorithmsData Structure Design
16
0
221 people solved
Sep 6, 2025
Snapchat logo
Snapchat
Hard
Software EngineerSenior+

Compare WebSocket, SSE, and long polling

You are building real-time features for a web application and the interviewer probes your networking fundamentals across several layers of the stack. ...

Software Engineering Fundamentals
9
0
145 people solved
Jan 4, 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
Salesforce logo
Salesforce
Medium
Product Manager

COVID-19 Vaccine Program Platform for India: Phased Plan to 80% Coverage at Low Cost

In a product manager interview at Salesforce, you are asked to own a product that manages COVID-19 vaccination across India. The goal is to get 80% of...

Product Design & StrategyRoadmapping & PlanningRequirements & Launch Execution
0
0
8 people solved
Jun 4, 2025
Instacart logo
Instacart
Hard
Machine Learning Engineer Locked

Solve Two Sorted-Array Tasks

This question evaluates competency in array manipulation, handling of sorted data, search techniques and algorithmic complexity analysis, focusing on ...

Coding & Algorithms
9
0
112 people solved
Feb 10, 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
Amazon logo
Amazon
Medium
Software Engineer

Compute optimal locker placement with obstacles

Compute optimal locker placement with obstacles Given house coordinates H = {(xi, yi)} and tree coordinates T = {(xj, yj)} on a 2D integer grid, choos...

Coding & Algorithms
9
0
70 people solved
Aug 7, 2025
Anthropic logo
Anthropic
Hard
Software Engineer

Walk through a recent technical project

Project Deep-Dive (Onsite Behavioral + Technical) Context: Choose a recent technical project (ideally within the last 12–18 months) where you led or h...

Behavioral & LeadershipProject Deep Dive
26
0
353 people solved
Sep 6, 2025
Raiffeisenbank logo
Raiffeisenbank
Hard
Machine Learning Engineer

TF-IDF From Scratch: Implementation, Sparse Storage for Millions of Terms, Complexity

Given a corpus of strings, implement a class or function that computes TF-IDF. Then explain how you would store and optimize TF-IDF for about 10 thous...

Machine LearningNatural Language ProcessingML Coding
0
0
3 people solved
Apr 15, 2026
Boston Consulting Group logo
Boston Consulting Group
Medium
Data Scientist

Compute averages and binomial/Poisson probabilities

Streaming Mean and Binomial vs Poisson Approximation Part A — Streaming Mean Update You have an existing dataset of N = 1,000 observations with mean 1...

Statistics & MathProbabilitySampling & Estimation
9
0
116 people solved
Oct 13, 2025
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
Google logo
Google
Hard
Software EngineerSenior+

Plan a Safe Repository-Wide Identifier Migration

Plan a Safe Repository-Wide Identifier Migration You have a very large repository whose internal variables and function names use snake case. A conver...

Software Engineering Fundamentals
11
0
81 people solved
Apr 16, 2026
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