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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
Uber logo
Uber
Medium
Software Engineer Locked

Find earliest time all riders become connected

This question evaluates graph connectivity and dynamic event-processing skills, testing conceptual understanding of connectivity in undirected graphs ...

Coding & AlgorithmsGraphs
49
0
363 people solved
Jan 22, 2026
HubSpot logo
HubSpot
Easy
Software Engineer

Design an hourly weather crawling service

Scenario Design a service that crawls the U.S. National Weather Service (or a similar public provider) and provides hourly weather data to internal co...

System DesignETL & Data PipelinesAPI Integration & HTTP Clients
26
0
183 people solved
Dec 15, 2025
Citadel logo
Citadel
Medium
Software Engineer

Find earliest common meeting slot

Given K participants' calendars, each a list of busy intervals [start, end) within a working window [workStart, workEnd], and a meeting duration d min...

Coding & AlgorithmsIntervals & Scheduling
35
0
275 people solved
Sep 6, 2025
Shopify logo
Shopify
Medium
Product Manager

Naming a Skill You Are Actively Improving: Evidence, Actions and Progress

Pick one thing about the way you work that you are actively trying to get better at right now. What is it, how did you realize it mattered, and what a...

Behavioral & LeadershipSelf-Awareness & Growth
0
0
6 people solved
Dec 14, 2024
Rocket Money logo
Rocket Money
Medium
Product Manager

Building a Habit for Tracking AI Advances and Applying Them as a PM

How do you keep yourself current on what is changing in AI? `hint Show a system, not a reading list Think about what makes your habit repeatable, how ...

Behavioral & LeadershipSelf-Awareness & GrowthAI Product Management
0
0
4 people solved
Apr 9, 2026
Ancestry logo
Ancestry
Medium
Software Engineer

Design a feedback-text personalization data system

System/ML design scenario: personalize using user feedback text You are building an embeddings + personalization pipeline for a consumer product (e.g....

ML System Design
6
0
50 people solved
Feb 11, 2026
Google logo
Google
Medium
Product Manager

Market-sizing estimate of yearly vacuum cleaner purchases in the United States

Estimate how many vacuum cleaners are sold in the United States. Talk through how you would structure the estimate, the assumptions you rely on, the a...

Product / Decision MakingEstimation & Market Sizing
0
0
5 people solved
Oct 8, 2025
Google logo
Google
Medium
Product Manager

Google Product Design: Connecting Product Managers With Customers, With Success Metrics

As a product manager at Google, you are asked to create a solution that helps product managers and their customers communicate better. You also need t...

Product Design & StrategyProduct SenseMetrics & KPIs
0
0
8 people solved
Apr 24, 2026
Snapchat logo
Snapchat
Medium
Software Engineer Locked

Design a device owner lookup service

This question evaluates a candidate's understanding of system design concepts such as real-time event ingestion, handling out-of-order and duplicate e...

System DesignSystem Design FundamentalsAPI Design
7
0
108 people solved
Feb 12, 2026
Google logo
Google
Medium
Data Scientist Locked

Explain linear regression to non‑technical stakeholders

Explain linear regression to a non-technical executive using one example, predicting weekly sales from price, ad spend, and store traffic. Cover plain...

Machine Learning
11
0
96 people solved
Oct 13, 2025
LinkedIn logo
LinkedIn
Medium
Product Manager

LinkedIn Growth Case: Doubling the Member Base Within Six Months

As a product manager, how would you grow LinkedIn's user base to twice its current size over the next six months? Explain how you would frame the goal...

Product Design & StrategyGrowth & MonetizationMetrics & KPIs
0
0
9 people solved
Feb 8, 2025
TikTok logo
TikTok
Medium
Software Engineer

Explain DPO and construct its training data

You are working on a project to fine-tune a large language model (LLM) using Direct Preference Optimization (DPO). Answer the following: 1. Conceptual...

Machine Learning
6
0
70 people solved
Dec 8, 2025
Uber logo
Uber
Medium
Product Manager

Measuring a New Uber Campaign's Incremental Impact with a Controlled Experiment

Uber is getting ready to launch a new campaign and wants evidence that it actually works before rolling it out widely. How would you design an A/B tes...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
0
0
6 people solved
Nov 7, 2025
Airbnb logo
Airbnb
Medium
Software Engineer

Walk through a project in detail

Walk Through a Significant Project Provide a deep-dive on one impactful project you led or contributed to. Cover: 1. Timeline: Start/end dates and maj...

Behavioral & LeadershipProject Deep Dive
23
0
193 people solved
Sep 6, 2025
Snapchat logo
Snapchat
Medium
Data Scientist

Build Predictive Model for Product Metric: Steps Explained

Build a Predictive Model for a Product Metric You are interviewing for a data scientist role and are asked to design a predictive model for a key prod...

Machine Learning
107
0
377 people solved
Jul 12, 2025
Amazon logo
Amazon
Medium
Software Engineer

Determine Rounds for Star Substring Threshold

Question Given a string S, an offset array O (replacement order), and an integer M, repeatedly replace S[O[i]] with ''. Determine the minimum number o...

Coding & Algorithms
14
0
59 people solved
Jul 29, 2025
SoFi logo
SoFi
Hard
Software Engineer

Design a Random Number Generation API

Design a Random Number Generation API System Design: Random Number Service (REST + Streaming) You are designing a high-scale service that generates ra...

System DesignAPI DesignCryptography
24
0
178 people solved
Jul 16, 2025
Paytm logo
Paytm
Medium
Product Manager

Reducing seller non-fulfillment on the Amazon marketplace

Amazon has found that many merchants on its marketplace put products up for sale and then never deliver the orders customers place. As the product man...

Product Design & StrategyTrust & SafetyProduct Design & Improvement
0
0
6 people solved
Jun 7, 2024
Meta logo
Meta
Medium
Product Manager

Diagnose rising Meta AI use in Instagram DMs alongside a drop in Discover search

On Instagram, people can use Meta AI in direct messages and from the search bar on the Discover page. Over a recent period, Meta AI usage in DMs has g...

Analytics & ExperimentationMetric Diagnostics
0
0
4 people solved
Mar 31, 2026
Amazon logo
Amazon
Medium
Data Scientist

Identify P-Value Limitations and Complementary Approaches

Identify P-Value Limitations and Complementary Approaches A/B Testing: Limits of P-values and Better Decision Practices Scenario Your team is running ...

Statistics & Math
23
0
71 people solved
Aug 4, 2025
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