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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
Meta logo
Meta
Medium
Machine Learning Engineer

Compute binary tree left-side view

Given a binary tree, return the values visible from the left side when looking from top to bottom. If multiple nodes exist at the same depth, the left...

Coding & Algorithms
6
0
74 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Product Manager

Setting Customer Expectations With an Estimate Before Scope Is Clear

You are a product manager, and a customer asks you for an estimate on something they are waiting for, but the requirements behind the request are stil...

Behavioral & LeadershipCommunication & StakeholdersAmbiguity & Decision Making
0
0
9 people solved
Oct 20, 2025
Google logo
Google
Easy
Software Engineer Locked

Design an ads retrieval service using a heap

This question evaluates understanding of priority queues/heaps, object-oriented API design, and algorithmic techniques for maintaining dynamic priorit...

Software Engineering FundamentalsData Structure DesignHeaps & Priority Queues
19
0
186 people solved
Mar 1, 2026
Capital One logo
Capital One
Easy
Data Scientist

Calculate Incremental Customers for Marketing Spend Justification

Incremental Customers Needed for Marketing Spend You previously computed the per-customer annual profit for a new cardholder, excluding partnership ma...

Statistics & MathBusiness Case Analysis
61
1
110 people solved
Jul 12, 2025
Uber logo
Uber
Medium
Machine Learning Engineer

Count connected delivery zones

Given an m x n grid representing a service area, each cell is either 'Z' (deliverable zone) or '#' (blocked). Two 'Z' cells belong to the same zone if...

Coding & AlgorithmsGrids & Matrices
8
0
123 people solved
Sep 6, 2025
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Design device telemetry pipeline for real-time and batch

Design a distributed system that ingests telemetry from millions of devices and supports both: - Real-time analytics (near-real-time dashboards/alerts...

System DesignData Ingestion & CDCBatch & Stream Processing
8
0
142 people solved
Dec 17, 2025
Figureai logo
Figureai
Medium
Data EngineerSenior+ Locked

Choose a Metric Hierarchy for a Humanoid-Robot Fleet

Create a metric hierarchy for a humanoid-robot fleet spanning useful task completion, autonomy, reliability, safety, charging, operations, and data he...

Analytics & Experimentation
1
0
30 people solved
May 20, 2026
Goldman Sachs logo
Goldman Sachs
Medium
Software Engineer

Solve string and hashmap interview tasks

Coding questions (solve both) 1) First non-repeating character Given a string s, return the first character that appears exactly once in the string. -...

Coding & AlgorithmsArrays & Strings
25
0
176 people solved
Dec 9, 2025
Meta logo
Meta
Medium
Data Scientist

Explore Behavioral Growth and Adaptability in Data Science.

Behavioral Deep-Dive: Growth, Agility, Cross-Team Support, and Inclusion You are in a behavioral and leadership round for a Data Scientist role. The i...

Behavioral & LeadershipFailure & LearningAmbiguity & Decision Making
118
0
425 people solved
Jul 12, 2025
LinkedIn logo
LinkedIn
Medium
Product Manager

Building for Travelers on Instagram: Segment, Trip Stage, MVP and Metrics

Design a travel product built into Instagram. Choose which travelers it serves, what it lets them do, and how you would measure whether it succeeds. `...

Product Design & StrategyProduct Sense
1
0
16 people solved
Mar 17, 2025
Apple logo
Apple
Medium
Software Engineer

Explain Python lists, dicts, and concurrency

Explain Python lists, dicts, and concurrency Explain the differences between Python lists and dictionaries (maps), including common operations and the...

Data Manipulation (SQL/Python)Programming LanguagesConcurrency
12
0
137 people solved
Jul 15, 2025
OpenAI logo
OpenAI
Hard
Software Engineer

Explain JS threading and useState vs useRef

Answer the following conceptual questions about JavaScript and React: 1. JavaScript and multithreading - How does JavaScript's execution model work...

Software Engineering FundamentalsJavaScript & TypeScriptReact & UI Frameworks
13
0
156 people solved
Dec 6, 2025
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Maintain the Median of a Number Stream

Implement a stream data structure that supports integer insertions and exact median queries across up to 200,000 operations. Preserve duplicates and n...

Coding & Algorithms
1
0
22 people solved
May 22, 2026
Meta logo
Meta
Medium
Product Manager

Root-Causing a Monthly Active User Decline on a Meta App

You are a PM at Meta and see that monthly active users (MAU) for your product are down this month. How would you work out what is behind the decline, ...

Analytics & ExperimentationMetric DiagnosticsSegmentation & Cohort Analysis
0
0
7 people solved
Jan 16, 2026
Adobe logo
Adobe
Medium
Product Manager

Go-to-market plan for winning Singapore SMEs to Adobe Creative Cloud

You are a product manager on Adobe Creative Cloud. How would you go after small businesses in Singapore as a customer segment? `hint One kind of small...

Product Design & StrategyProduct StrategyGrowth & Monetization
1
0
10 people solved
Dec 5, 2024
Instacart logo
Instacart
Medium
Product Manager

Growing Instacart's Business Segment: Acquiring and Retaining Offices, Restaurants and Shops

You are a product manager at Instacart and own growth of the business customers segment. What strategies would you put in place to bring in, and keep,...

Product Design & StrategyGrowth & MonetizationProduct Strategy
0
0
6 people solved
Aug 14, 2025
Meta logo
Meta
Medium
Data Scientist

Define and query shop visibility

You are given the following schema. Use only the columns provided; do not introduce new fields or labels. Tables and columns: - shops(shop_id INT, sho...

Data Manipulation (SQL/Python)
1
0
18 people solved
Oct 13, 2025
Coinbase logo
Coinbase
Hard
Software Engineer

Design real-time exchange data sync system

Design real-time exchange data sync system System Design: Real-Time Multi-Exchange Stock Data Ingestion and Live Web Page Context You are asked to des...

System DesignTrading SystemsData Ingestion & CDC
7
0
139 people solved
Jul 26, 2025
Coinbase logo
Coinbase
Medium
Data Scientist Locked

Optimize no-penalty test strategy

Choose how many of 50 five-option multiple-choice questions to analyze versus blind-guess to maximize expected score within a 900-second limit. Analys...

Statistics & Math
9
0
68 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Compute most popular location with weights

You are given a dataset of voting records for concert locations. Each record includes voter_id, location_text, and an optional numeric weight (default...

Data Manipulation (SQL/Python)
3
0
30 people solved
Sep 6, 2025
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