Interview Questions
Practice the exact questions companies are asking right now.
Questions
9.8k
Companies
511
Updated
08.16.2026
9.8k Questions 511 Companies08.16.2026
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_
"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"
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
"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."
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
"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."
CarlosFull Stack, Shopify
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
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."
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
"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."
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
"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."
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
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
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
Role
Hard
Software Engineer LockedSchedule Non-Overlapping Meetings Efficiently
This question evaluates understanding of interval scheduling and overlap detection, proficiency in selecting efficient data structures for dynamic ord...
Coding & Algorithms
9
0
67 people solved
May 2, 2026
Easy
Software EngineerDesign a Payment System
Design a Payment System Design the backend payment system for an online platform that charges customers for goods and services (for example, a marketp...
System Design
1
0
23 people solved
Mar 16, 2026
Easy
Software EngineerDesign a Versioned Social Follow Graph with Friend Recommendations
Design a Versioned Social Follow Graph with Friend Recommendations Build an in-memory service that maintains a directed follow graph between users and...
Coding & Algorithms
2
1
12 people solved
Mar 16, 2026
Hard
Software EngineerMeasure Meeting Coverage and Required Rooms
Measure Meeting Coverage and Required Rooms Given meeting intervals, compute both the total amount of time spent in at least one meeting and the minim...
Coding & Algorithms
0
0
9 people solved
Jun 28, 2026
Hard
Software EngineerDesign a global restaurant menu update system
Design a menu update system for a global chain of restaurants. Context: - The chain operates in many countries. - Each restaurant may have multiple ki...
System Design
14
0
153 people solved
Nov 12, 2025
Medium
Data Scientist LockedCalculate Conversion Lift CI
This question evaluates statistical inference skills for proportions, specifically construction and interpretation of confidence intervals and hypothe...
Statistics & Math
8
0
93 people solved
Jan 21, 2026
Medium
Software EngineerSupport String Membership and Random Sampling
Support String Membership and Random Sampling Design an in-memory collection initialized from a set of strings. It must support: - contains(value) -> ...
Software Engineering Fundamentals
1
0
18 people solved
May 1, 2026
Medium
Software EngineerSenior+ LockedDesign a Metrics Storage Platform
This question evaluates system-design and distributed-systems skills for time-series metrics storage, focusing on data modeling for counters, gauges, ...
System Design
9
0
66 people solved
Mar 30, 2026
Medium
Data EngineerDescribe past NLP work and collaboration
Scenario In an initial phone screen, the interviewer asks you to introduce yourself, then drills into your resume. Questions (answer using concrete ex...
Behavioral & Leadership
15
0
122 people solved
Mar 1, 2026
Medium
Software EngineerNew GradDesign a restaurant waitlist system
You are implementing the waitlist system for a restaurant. Parties arrive over time, can cancel, and get seated when a table becomes available. Rules ...
Coding & Algorithms
109
2
1269 people solved
Mar 1, 2026
Medium
Software EngineerExplain project choices, metrics, and AI usage
Behavioral / Project deep-dive You’ll be asked to walk through a recent project you worked on (preferably one with meaningful technical and business i...
Behavioral & Leadership
8
0
71 people solved
Mar 1, 2026
Hard
Software EngineerHow to answer common recruiter screen questions
Question You are in an initial recruiter / phone screen for a software engineering role at OpenAI. The recruiter asks a mix of logistics, employment-h...
Behavioral & Leadership
30
0
336 people solved
Feb 2, 2026
Hard
Software Engineer LockedDesign a Cache with Hit Counts
This question evaluates a candidate's competence in system design, data structures, concurrency, and observability by requiring a key-value cache that...
Software Engineering Fundamentals
41
0
359 people solved
Mar 15, 2026
Medium
Software Engineer LockedDesign Distributed Cloud Job Scheduling
This question evaluates proficiency in distributed systems design, resource scheduling and placement, stateful job orchestration, API and data-model d...
System Design
3
0
24 people solved
May 18, 2026
Medium
Software EngineerGenerate Account Email Notifications
You are building an email notification scheduler for user accounts. You are given: 1. A list of user accounts. Each account has: - account_id - ...
Coding & Algorithms
6
0
51 people solved
Apr 14, 2026
Medium
Software EngineerDesign a Payment Fraud Detection Service
Design a real-time fraud detection service for a payment platform. When a user submits a payment attempt, the platform calls your service before autho...
System Design
10
0
87 people solved
Apr 14, 2026
Medium
Machine Learning Engineer LockedDesign Features for Residual Volatility
This question evaluates competency in feature engineering for financial time-series, volatility forecasting after removing systematic market effects, ...
Machine Learning
5
0
65 people solved
Apr 14, 2026
Medium
Machine Learning Engineer LockedAnalyze CTR Data and Train Model
This question evaluates end-to-end supervised machine learning competencies for tabular click-through rate prediction, including exploratory data anal...
Machine Learning
8
0
112 people solved
Feb 1, 2026
Hard
Software Engineer LockedPresent a Project and Reflect
This question evaluates a candidate's ability to communicate technical project work, demonstrate ownership, leadership, decision-making, measurable im...
Behavioral & Leadership
7
0
111 people solved
Feb 1, 2026
Medium
Data ScientistEstimate ads ranking revenue impact
You are the data scientist for an ads ranking team at a large social platform. The team has built a new ranking algorithm for feed ads. The new model ...
Analytics & Experimentation
55
0
370 people solved
Apr 30, 2026