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
Medium
Software EngineerDescribe proudest project and toughest challenge
Behavioral questions 1. Proudest project: Tell me about the project you are most proud of. What was the goal, what did you personally own, and what wa...
Behavioral & Leadership
16
0
149 people solved
Feb 12, 2026
Medium
Machine Learning EngineerSenior+Design a video recommendation system
Scenario You are designing an ML-driven video recommendation product (home feed + “up next”) for a consumer app. The interviewer focuses heavily on in...
ML System Design
31
0
313 people solved
Feb 12, 2026
Medium
Software Engineer AIAssign Reviewers from Changed Files
Write a Java program that helps automatically assign a code reviewer after a pull request is opened. You are given: 1. A local Git repository path. 2....
Coding & Algorithms
2
0
23 people solved
Apr 29, 2026
Medium
Software EngineerImplement obstacle-course run statistics
You are given a TypeScript codebase for tracking race results on an obstacle course. - A Course has a fixed number of obstacles. - A Run stores the ti...
Coding & Algorithms
4
0
45 people solved
Apr 12, 2026
Hard
Software EngineerDesign Search Autocomplete
Design a large-scale autocomplete service for a search engine. As a user types a query prefix, the system should return the top 5 suggested full queri...
System Design
9
0
57 people solved
Apr 12, 2026
Medium
Software EngineerDesign out-of-order windowed stream processor
Design out-of-order windowed stream processor Design an event processor for an unbounded, infinite stream of events. Each event has the fields id, tim...
Coding & Algorithms
17
0
287 people solved
Aug 1, 2025
Easy
Data Scientist LockedResolve Simpson’s paradox in A/B email test
This question evaluates understanding of Simpson's paradox, causal inference, A/B testing and experimental design within the Analytics & Experimentati...
Analytics & Experimentation
4
0
59 people solved
Feb 11, 2026
Hard
Software EngineerHow do you lead under risk and uncertainty?
Answer the following engineering leadership questions (EM/Senior level). Use specific examples. 1. Tell me about a time you rejected a technically exc...
Behavioral & Leadership
57
0
527 people solved
Feb 11, 2026
Medium
Software EngineerDesign a Figma-like collaborative editor
System Design: Collaborative design editor (Figma/Google Docs style) Design the backend (and key client interactions) for a real-time collaborative de...
System Design
8
0
164 people solved
Feb 11, 2026
Medium
Software Engineer LockedDesign fast search for AV raw logs
This question evaluates a candidate's ability to design scalable logging and search infrastructure for autonomous-vehicle telemetry, testing skills in...
System Design
13
0
195 people solved
Feb 11, 2026
Medium
Machine Learning Engineer LockedDesign an ads ranking ML system
This question evaluates a candidate's ability to design a low-latency ads ranking machine learning system, including feature engineering and freshness...
ML System Design
11
0
89 people solved
Feb 11, 2026
Medium
Software EngineerDesign a distributed job scheduler
Question Design a distributed job scheduler that can run background jobs at specific times or on recurring schedules (similar to cron but scalable and...
System Design
10
0
68 people solved
Dec 8, 2025
Medium
Software Engineer LockedDesign in-memory delivery billing core APIs
This question evaluates a candidate's skills in designing efficient in-memory data structures and APIs for billing scenarios, including driver and del...
System Design
39
0
264 people solved
Dec 8, 2025
Medium
Software Engineer LockedSolve Rooms and Top-K Streams
This question evaluates algorithmic problem-solving skills across interval scheduling/resource allocation and streaming top-k maintenance, testing com...
Coding & Algorithms
6
0
43 people solved
Jun 5, 2026
Medium
Machine Learning EngineerSenior+Design User Embedding Semantic Search
Design a user-embedding-based two-stage semantic retrieval and ranking system for a short-term rental marketplace. The goal is to retrieve and rank pr...
ML System Design
9
0
65 people solved
Apr 28, 2026
Medium
Machine Learning EngineerSenior+Discuss ML Project Tradeoffs
You are interviewing for a senior machine learning role and are asked to discuss a past recommendation or prediction project in depth. Use one concret...
Machine Learning
4
0
48 people solved
Apr 28, 2026
Medium
Data ScientistSenior+Query US-based users and most active forums
You are given user and post data for an online forum platform. Tables (schemas) Assume the following tables: users - user_id BIGINT (PK) - home_countr...
Data Manipulation (SQL/Python)
9
2
153 people solved
Sep 19, 2025
Medium
Software EngineerSenior+Explain Linux Command Execution, Filesystems, and Isolation
Explain Linux Command Execution, Filesystems, and Isolation Walk through the operating-system mechanisms behind common Linux commands and isolation ch...
Software Engineering Fundamentals
3
0
34 people solved
Jan 1, 2026
Easy
Machine Learning Engineer LockedDesign an LLM agent with RAG and tools
This question evaluates proficiency in designing LLM-based agents, covering retrieval-augmented generation, tool/API orchestration, safety and evaluat...
Machine Learning
6
0
55 people solved
Dec 7, 2025
Hard
Machine Learning EngineerImplement n-gram model and select n
Implement n-gram model and select n Task: Implement an n-gram Language Model with Training, Sampling, and Model Selection Guidance Objective Implement...
Machine Learning
23
0
294 people solved
Aug 8, 2025