Interview Questions
Practice the exact questions companies are asking right now.
Questions
10.0k
Companies
520
Updated
08.21.2026
10.0k Questions 520 Companies08.21.2026
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
Machine Learning EngineerDescribe conflict and failure using STAR framework
You are in a behavioral interview for a software/ML engineering role. The interviewer asks you to: 1. Describe a time you faced a significant conflict...
Behavioral & Leadership
13
0
165 people solved
Dec 8, 2025
Medium
Software EngineerDesign consistent hashing with a sorted map
Design consistent hashing with a sorted map Consistent Hashing with a Sorted Map (Virtual Nodes) Context You are building a client-side library to map...
System Design
21
0
197 people solved
Aug 7, 2025
Medium
Software EngineerDesign a Short-Video Recommendation System
Question Design a recommendation system for a short-video feed. The system should generate a personalized ordered feed, react to recent viewing behavi...
ML System Design
0
0
2 people solved
May 22, 2026
Medium
Software Engineer LockedFind Shortest Covering Substring
This question evaluates proficiency in string processing, handling character multiplicities, and designing time- and space-efficient algorithms for su...
Coding & Algorithms
0
0
6 people solved
May 22, 2026
Easy
Software EngineerDiscuss AI Use, Deadlines, Ambiguity, and Feedback
Discuss AI Use, Deadlines, Ambiguity, and Feedback Prepare evidence-based responses to the following behavioral themes. Use distinct examples where po...
Behavioral & Leadership
1
0
13 people solved
Mar 19, 2026
Medium
Machine Learning EngineerHandle Cross-Team Dependencies and Scope Conflicts
Answer the following behavioral interview questions using a concrete example from your experience: 1. You depend on another team to complete work, but...
Behavioral & Leadership
3
0
49 people solved
Apr 18, 2026
Medium
Software Engineer LockedCompute Earliest Bus Arrival
This question evaluates proficiency with shortest-path algorithms and time-dependent graph modeling, focusing on reasoning about travel times combined...
Coding & Algorithms
5
1
28 people solved
Apr 18, 2026
Medium
Machine Learning Engineer LockedDesign a Location Recommendation System
This question evaluates a candidate's ability to design end-to-end machine learning recommendation systems, covering competencies in candidate generat...
ML System Design
5
0
79 people solved
Jan 24, 2026
Hard
Software EngineerDesign an enterprise RAG assistant for internal docs
Scenario Design an enterprise GPT-style assistant that allows employees to ask questions about internal company documents (policies, wikis, specs, tic...
ML System Design
8
0
122 people solved
Dec 7, 2025
Easy
Data Scientist LockedInvestigate cross-country engagement and ads experiments
This Analytics & Experimentation (Data Scientist) question evaluates skills in experiment design and causal inference, metric definition and trade-off...
Analytics & Experimentation
9
0
100 people solved
Aug 24, 2025
Hard
Machine Learning EngineerDesign enterprise RAG search system
Design enterprise RAG search system Design an End-to-End Enterprise RAG Search System Background You are tasked with designing a Retrieval-Augmented G...
ML System Design
13
0
189 people solved
Aug 4, 2025
Hard
Software EngineerDesign a scalable tagging system
Design a scalable, multi-tenant tagging system that lets users attach multiple tags to arbitrary resources ("items") and query them efficiently. The s...
System Design
25
0
195 people solved
Aug 4, 2025
Medium
Software EngineerDesign an inventory system
Design an Inventory Management System with Real-Time Stock and Ordering Problem You are designing an inventory management service for a retail/marketp...
System Design
28
0
308 people solved
Aug 4, 2025
Medium
Data ScientistCritique Shell Script for Credit-Card Program Tech Round
Critique Shell Script for Credit-Card Program Tech Round Scenario Tech round for a new credit-card program: candidate is shown a 5-6 line shell script...
Coding & Algorithms
17
0
154 people solved
Aug 4, 2025
Medium
Data ScientistExplain Shell Script for Python Virtual Environment Setup
Explain Shell Script for Python Virtual Environment Setup Scenario Shell script for setting up a Python virtual environment during a tech screen Quest...
Coding & Algorithms
30
0
220 people solved
Aug 4, 2025
Medium
Data ScientistHow to Analyze and Reduce Airline Flight Delays
How to Analyze and Reduce Airline Flight Delays Scenario Statistics role-play: investigating airline flight delays Task Design and execute a statistic...
Statistics & Math
35
0
166 people solved
Aug 4, 2025
Easy
Data ScientistHow would you define and use retention metrics?
Scenario You are a Data Scientist supporting a consumer product (app or website). A PM asks you to “dive deep” on user retention and recommends tracki...
Analytics & Experimentation
14
0
181 people solved
Feb 18, 2026
Easy
Data ScientistHow to measure harmful-content severity and run experiments
Question You are a Data Scientist working on content integrity / harmful content at a large social media platform (e.g., hate/harassment, self-harm, g...
Analytics & Experimentation
40
0
261 people solved
Feb 18, 2026
Medium
Software EngineerImplement LRU and LFU caches
Implement two in-memory cache classes with fixed capacity: 1. Recent-use cache - get(key): return the value for key, or -1 if the key does not exis...
Coding & Algorithms
3
0
72 people solved
Jan 23, 2026
Medium
Data Scientist LockedDesign plant-infection algorithms
This question evaluates algorithm design and simulation skills for a data scientist role, focusing on modeling contagion spread on an m-by-n grid, eve...
Coding & Algorithms
6
0
51 people solved
Feb 18, 2026