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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
Easy
Software Engineer Locked

Add Two Signed Decimal Character Arrays

Add two signed decimal integers supplied as strings without converting the complete inputs to built-in integer types. Work through the function contra...

Coding & Algorithms
0
0
17 people solved
May 9, 2026
Amazon logo
Amazon
Hard
Data Scientist

Estimate live sports impact on subscriptions

Estimate the Causal Impact of Live Sports on Prime Subscriptions and Engagement Context Amazon is considering adding live broadcasts of selected sport...

Analytics & Experimentation
4
0
66 people solved
Oct 13, 2025
Eve Legal logo
Eve Legal
Medium
Product Manager

People Management: Defining Roles, Assessing Candidates and Making Hiring Calls

How do you go about hiring people for your team? Walk the interviewer through your approach, using a real hire where you can. `hint Start with one rea...

Behavioral & LeadershipMentoring & Team Growth
0
0
5 people solved
Dec 14, 2023
Meta logo
Meta
Medium
Product Manager

Goals, North-Star Metric and Guardrails for Meta's Horizon Worlds VR Platform

You are a product manager at Meta for Horizon Worlds, the virtual-reality game and social space on Meta Quest headsets where people visit, play in and...

Analytics & ExperimentationMetrics & KPIs
0
0
5 people solved
Jul 18, 2025
Meta logo
Meta
Medium
Product Manager

Facebook's early COVID-19 response: a health app's users, features and metrics

You are a product manager at Facebook (now Meta) at the very start of the COVID-19 pandemic. Design a healthcare application that Facebook could launc...

Product Design & StrategyProduct SenseMetrics & KPIs
1
0
11 people solved
Jul 1, 2025
Anthropic logo
Anthropic
Medium
Software Engineer

Detect duplicate files by content

Detect duplicate files by content in a filesystem. Given access to a directory tree, return groups of file paths that have identical byte content. Min...

Coding & Algorithms
15
0
246 people solved
Aug 1, 2025
Meta logo
Meta
Medium
Product Manager

Facebook Product Strategy: Where and How to Win Against LinkedIn

You are a product manager at Facebook. Design a product that lets Facebook compete with LinkedIn. Explain where Facebook should take LinkedIn on, who ...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
0
0
6 people solved
Apr 3, 2024
DoorDash logo
DoorDash
Medium
Software Engineer

Compute nearest courier for each customer

Compute nearest courier for each customer You are given two sets of 2D points: customers C = {c1..cn} and active couriers (dashers) D = {d1..dm}. Each...

Coding & Algorithms
9
0
141 people solved
Aug 8, 2025
Meta logo
Meta
Medium
Data Scientist

Write SQL for 7-day WhatsApp call metrics

Today is fixed as 2025-09-01. Using PostgreSQL, write a single query that returns one row per UTC calendar date for the last 7 days inclusive of today...

Data Manipulation (SQL/Python)
2
0
18 people solved
Oct 13, 2025
Google logo
Google
Medium
Product Manager

Make Twitter Understandable to Someone With No Technology Experience

In a product manager interview, you are asked to explain Twitter to a person who has essentially no experience with technology. Keep it simple and sti...

Behavioral & LeadershipCommunication & StakeholdersProduct Sense
1
0
8 people solved
May 12, 2026
Nio logo
Nio
Medium
Software Engineer Locked

Find kth smallest and count stair-climbing ways

This pair evaluates proficiency with order-statistics and selection algorithms for finding the k-th smallest element and with dynamic programming and ...

Coding & Algorithms
2
0
35 people solved
Jan 22, 2026
Pinduoduo logo
Pinduoduo
Medium
Software Engineer Locked

Compute longest increasing subsequence length

This question evaluates understanding of sequence analysis and algorithmic problem solving, assessing competency with subsequences, reasoning about co...

Coding & Algorithms
5
0
64 people solved
Jan 1, 2026
Amazon logo
Amazon
Medium
Data Scientist

Compute array modes with ties and no-mode rule

Write a function that returns the mode(s) of an integer array. Requirements: if all values are unique, return an empty list (there is no mode); allow ...

Coding & Algorithms
6
0
53 people solved
Oct 13, 2025
X (Twitter) logo
X (Twitter)
Medium
Product Manager

Make Twitter (X) a Better Place to Follow the News: Product Improvement

You are a product manager at Twitter (now X). How would you improve the news experience on Twitter? Walk through how you would decide which part of th...

Product Design & StrategyProduct Design & Improvement
0
0
6 people solved
Sep 18, 2024
ByteDance logo
ByteDance
Medium
Data Scientist

Build and iteratively improve sentiment classifier

You need to build a sentiment classification model (e.g., positive/neutral/negative) for user-generated text. You already shipped an initial version, ...

Machine Learning
10
0
72 people solved
Nov 12, 2025
Boston Consulting Group logo
Boston Consulting Group
Medium
Data Scientist

Explain AUC, activations, ensembles, and imbalance

Machine Learning Metrics and Modeling Choices — Multi-part You are given model scores and binary labels for a small dataset and asked to compute ROC A...

Machine LearningModel EvaluationML Fundamentals
19
0
135 people solved
Oct 13, 2025
Boston Consulting Group logo
Boston Consulting Group
Medium
Data Scientist Locked

Explain AUC, imbalance, losses, and networks

This question evaluates a candidate's understanding of imbalanced classification and regression concepts, including ROC/PR curves and AUC, prevalence ...

Machine LearningModel EvaluationSupervised Learning
13
0
109 people solved
Oct 13, 2025
Google logo
Google
Medium
Product Manager

Sketch a Healthcare Data Pipeline and Trace How Records Flow From Source to Consumer

You are interviewing for a product manager role, and this round includes a technical question. Pick a healthcare use case, then sketch the data pipeli...

System DesignTechnical Tradeoffs for PMsETL & Data Pipelines
0
0
6 people solved
Jul 22, 2024
Amazon logo
Amazon
Medium
Product Manager

Planning the Market Launch of a New Sleep Medication at a Pharmaceutical Company

You are a product manager at a pharmaceutical company that is preparing to bring a new sleeping pill to market. How would you plan and run the launch?...

Product Design & StrategyRequirements & Launch Execution
0
0
7 people solved
Feb 14, 2024
Meta logo
Meta
Medium
Product Manager

Letting Messaging App Users Pin What Matters: Feature Design

You are a product manager at the company behind a messaging app like WhatsApp. Design a pinning feature for the app. Decide what users should be able ...

Product Design & StrategyProduct Design & Improvement
0
0
5 people solved
Dec 28, 2023
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