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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
Dropbox logo
Dropbox
Medium
Product Manager

Landing Page Redesign A/B Test: Success Metric, Sample Size and Launch Rule

You are a product manager at Dropbox, and your team has built a new landing page. Design an experiment that shows whether the new page is a success. `...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
1
0
7 people solved
Oct 27, 2025
Coinbase logo
Coinbase
Medium
Data Scientist

Calculate Adoption and Transaction Rates, Identify Cross-Region Sales

user_txn +---------+-------------+------------+---------------+------------------+---------------------+ | user_id | user_region | adopted_at | transa...

Data Manipulation (SQL/Python)
67
0
313 people solved
Jul 12, 2025
Google logo
Google
Hard
Software Engineer

Describe Helping an Underperforming Peer

Answer the following behavioral interview questions: 1. Tell me about a time when you helped a peer or teammate who was underperforming. 2. Tell me ab...

Behavioral & Leadership
5
0
66 people solved
Jan 20, 2026
Chime logo
Chime
Medium
Product Manager

Describe a 0-to-1 project you led

Tell me about a product or growth initiative that you personally led from 0 to 1. Explain the customer problem, why the opportunity mattered, how you ...

Behavioral & LeadershipProduct SenseLeadership & Influence
13
0
139 people solved
Feb 24, 2025
Anchorage Digital logo
Anchorage Digital
Medium
Software Engineer Locked

Print the File System State

This question evaluates a candidate's ability to serialize and format in-memory data structures for deterministic textual output, focusing on represen...

Coding & Algorithms
1
0
23 people solved
Jun 9, 2026
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Design a replicated key-value store with quorums

Design a distributed system that replicates key–value pairs across multiple replicas. The interviewer wants to focus on replication, quorums, and fail...

System DesignKey-Value StoresConsensus & Replication
12
0
111 people solved
Dec 17, 2025
Citi logo
Citi
Medium
Software Engineer

Explain OS and networking basics

Systems Fundamentals Quickfire (Onsite Software Engineer) Answer concisely but precisely. Use diagrams or bullets if it helps. 1) Processes, Threads, ...

System Design
6
0
119 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software Engineer Locked

Apply New Learning and Satisfy a Customer

Explain how new learning improved your work and how you satisfied a customer, with concrete application, validation, and feedback in fictional example...

Behavioral & LeadershipOwnership & ExecutionCommunication & Stakeholders
2
0
25 people solved
Sep 7, 2026
Walmart Labs logo
Walmart Labs
Medium
Product Manager

Building an Online Store That Tailors Itself to Each Shopper

As a product manager, you are asked to design an e-commerce platform that is customized for each user instead of looking the same for everyone. Explai...

Product Design & StrategyProduct SensePersonalization
0
0
6 people solved
Jul 24, 2026
Shopify logo
Shopify
Medium
Data Scientist

Design robust experiment for ambiguous core change

You must evaluate a core product change that likely has network effects (e.g., a matchmaking tweak in a large online game with 8M DAU). Define the pri...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
20
0
139 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Product Manager

Pick a north-star metric and guardrails for Facebook Live in its growth stage

You are a product manager for Facebook Live, the feature that lets people, Pages and groups stream video in real time while an audience watches, comme...

Analytics & ExperimentationMetrics & KPIs
1
0
8 people solved
Mar 26, 2025
Snapchat logo
Snapchat
Hard
Software Engineer Locked

Find minimum-latency path across dependent services

This question evaluates understanding of graph algorithms and shortest-path computation on weighted directed graphs, including handling cycles, multip...

Coding & Algorithms
5
0
71 people solved
Feb 11, 2026
Airbnb logo
Airbnb
Medium
Software Engineer

Describe a cross-functional project you’re proud of

Describe a project you are most proud of, ideally one that required cross-team (cross-organizational or cross-functional) collaboration. Your answer s...

Behavioral & LeadershipProject Deep Dive
9
0
181 people solved
Feb 12, 2026
Dropbox logo
Dropbox
Medium
Product Manager

How Much Did Airbnb Earn in 2021? A Market-Sizing Estimate for Its Core Business

In a product manager interview, you are asked to estimate Airbnb's annual revenue for 2021. Count only Airbnb's core business and leave out revenue fr...

Product / Decision MakingEstimation & Market Sizing
1
0
10 people solved
Oct 28, 2025
Google logo
Google
Medium
Software Engineer Locked

Find cheapest common ancestor in a tree

This question evaluates understanding of tree data structures and ancestor concepts (such as lowest common ancestor) along with algorithmic skills for...

Coding & AlgorithmsTrees
26
1
198 people solved
Feb 12, 2026
Microsoft logo
Microsoft
Hard
Software Engineer Locked

Design a simple API rate limiter

This question evaluates competency in designing scalable, low-latency API rate limiting, covering distributed-systems reasoning, storage and caching t...

System DesignRate LimitingSystem Design Fundamentals
12
0
127 people solved
Feb 11, 2026
DoorDash logo
DoorDash
Medium
Machine Learning Engineer Locked

Minimize batches and allocate riders by time

This question set evaluates algorithmic problem-solving in scheduling and resource allocation, assessing understanding of batching under capacity and ...

Coding & AlgorithmsIntervals & SchedulingGreedy
21
0
300 people solved
Feb 3, 2026
Capital One logo
Capital One
Medium
Data Scientist

Perform and justify t-tests

A/B Test: Compare Mean Watch Time Between Variants A and B Context: You ran an A/B test measuring per-user daily watch_time (in seconds). You obtained...

Statistics & Math
6
0
67 people solved
Oct 13, 2025
Atlassian logo
Atlassian
Medium
Product Manager

Designing a Consumer Weight-Loss App: Target Users, Habit Features and Safe Metrics

Design an app for people who are trying to shed weight. Who is it for, and what does it do to help them succeed? `hint Ask where attempts break down M...

Product Design & StrategyProduct Sense
0
0
5 people solved
Feb 25, 2026
Google logo
Google
Hard
Data Scientist

Find companies similar to a given client

System Design: Retrieve Top-20 Most Similar Companies for Sales Prospecting You are given an anchor client (e.g., The Coca‑Cola Company). Design a sys...

Machine LearningRetrieval & Candidate GenerationEmbeddings & Vector Search
16
0
128 people solved
Oct 13, 2025
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