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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
Snapchat logo
Snapchat
Medium
Software Engineer

Compute islands in a binary grid

You are given an m-by-n grid of characters where '1' represents land and '0' represents water. Count the number of connected land masses (islands) usi...

Coding & Algorithms
5
0
80 people solved
Sep 6, 2025
Uber logo
Uber
Medium
Machine Learning Engineer

Implement 1D convex minimization in Python

Question Implement, in Python, an algorithm that minimizes a 1D black-box convex function F(x) over a closed interval [a, b]. Assume F is convex (henc...

Machine LearningML CodingBinary Search
25
0
213 people solved
Sep 6, 2025
Glean logo
Glean
Easy
Data Scientist

How to measure product success?

You are asked to evaluate whether a product or newly launched feature is successful. Describe how you would define success from a data science and pro...

Analytics & Experimentation
7
0
58 people solved
Jan 11, 2026
Upstart logo
Upstart
Medium
Data Scientist

Design a Regression Model for Robust Extrapolation Performance

Design a Regression Model for Robust Extrapolation Performance Scenario Onsite machine-learning exercise: your task is to build a regression model usi...

Machine LearningRegression & Statistical ModelingModel Evaluation
72
0
186 people solved
Aug 4, 2025
Amazon logo
Amazon
Hard
Software Engineer

Design a cloud storage service

Design a cloud storage service System Design: Cloud Document Storage and Sharing Service Context Design the backend for a large-scale cloud document s...

System Design
12
0
84 people solved
Aug 7, 2025
Expedia logo
Expedia
Hard
Data Scientist

Choose KPIs and prove impact with experiments

Expedia Search: Profit-Focused Ranking Launch (Onsite) Context You’re on the Search team launching a new hotel-ranking model for enterprise clients wh...

Analytics & Experimentation
6
0
72 people solved
Oct 13, 2025
Pinterest logo
Pinterest
Medium
Data Scientist Locked

How would you evaluate a carousel launch?

This question evaluates a data scientist's skills in experimental design, product-metric specification, causal inference, and diagnostic analysis for ...

Analytics & ExperimentationLaunch EvaluationMetric Diagnostics
58
0
365 people solved
Mar 10, 2026
Amazon logo
Amazon
Medium
Data Scientist

Identify Issues and Redesign Customer-Conversion Chart

Identify Issues and Redesign Customer-Conversion Chart Critique and Redesign a Customer-Conversion Visualization Context Assume you are reviewing a ch...

Analytics & Experimentation
26
0
90 people solved
Aug 4, 2025
Chicago Trading Company logo
Chicago Trading Company
Medium
Software EngineerNew Grad Locked

Describe Growth, Mistakes, and Obstacles

This prompt evaluates learning velocity, ownership, collaboration, accountability, and interpersonal problem-solving by eliciting concrete internship ...

Behavioral & Leadership
4
0
39 people solved
Jun 10, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Design error detection and propagation algorithms

You are given three related sub-problems about error detection and propagation. A) Log search: You have a chronologically ordered array of log lines. ...

Coding & Algorithms
10
0
71 people solved
Sep 6, 2025
Microsoft logo
Microsoft
Hard
Data Scientist

Handle unreliable email during time-critical coordination

Scheduling Under Email Deliverability Risk: 72-Hour Action Plan and Escalation Scenario You must schedule a critical Data Scientist technical screen w...

Behavioral & Leadership
10
0
77 people solved
Oct 13, 2025
Uber logo
Uber
Hard
Software Engineer

Design MapReduce for schedules

Design a scalable job to compute rolling 15-minute meeting concurrency and room utilization You are given a massive log of meeting events with fields:...

System DesignBatch & Stream ProcessingIntervals & Scheduling
7
0
139 people solved
Sep 6, 2025
Google logo
Google
Medium
Product Manager

Product Critique & Improvement

Product Critique and Improvement Case Choose a product you genuinely admire but that still has clear shortcomings. Give a structured critique focused ...

Product / Decision Making
17
0
80 people solved
Jul 4, 2025
Uber logo
Uber
Medium
Software EngineerSenior+ Locked

Design a Real-Time Chat System

This system design question tests a candidate's ability to architect a scalable real-time messaging platform, focusing on transport protocol selection...

System DesignReal-Time SystemsMessaging & Event-Driven
11
0
107 people solved
Jun 19, 2026
Amazon logo
Amazon
Hard
Software Engineer

Design an online bookstore for browse and purchase

Design an online bookstore for browse and purchase System Design: Online Bookstore (Browse + Purchase) Context Design an online bookstore that allows ...

System Design
7
0
106 people solved
Jul 31, 2025
Meta logo
Meta
Hard
Data Scientist

Building a restaurant‑recommendation feature with Nearby Friends signals

Real-time Nearby Eateries Recommendation Meta wants to leverage real-time, opt-in location from Nearby Friends to recommend nearby eateries users migh...

Analytics & Experimentation
72
0
229 people solved
Jul 12, 2025
Airbnb logo
Airbnb
Medium
Software Engineer

Prioritize consumer product opportunities

Case: Improve Engagement in a Consumer App with Flat MAU Context You are given a large consumer mobile app whose monthly active users (MAU) have been ...

Behavioral & LeadershipProduct Design & ImprovementMetrics & KPIs
11
0
94 people solved
Sep 6, 2025
Mistral AI logo
Mistral AI
Medium
Software Engineer

Set up a Python LLM dev environment

Task: Reproducible Local Python Environment for a Mistral Agent You are to set up a clean, fully reproducible local Python environment to develop a sm...

Software Engineering Fundamentals
30
0
449 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software Engineer

Describe conflict resolution and initiative

The behavioral round reportedly consisted of 7-8 standard questions. A polished version of the expected prompts would be: - Tell me about a time you h...

Behavioral & LeadershipConflict & CollaborationLeadership & Influence
6
0
83 people solved
Mar 4, 2026
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Answer Values and Ownership Questions

This set of questions evaluates interpersonal and leadership competencies including values alignment, ownership, mentorship, teamwork, communication, ...

Behavioral & Leadership
3
0
44 people solved
Nov 10, 2025
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