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 Engineer LockedDesign ad click aggregator and file sync service
This question evaluates system design competencies in building scalable, reliable distributed services—covering high-throughput event ingestion and ag...
System Design
23
0
256 people solved
Jan 22, 2026
Medium
Software Engineer LockedBuild a responsive grid of fixed boxes
This question evaluates front-end layout and responsiveness skills including HTML/CSS and React component rendering, plus performance scaling for larg...
Software Engineering Fundamentals
6
0
70 people solved
Jan 22, 2026
Hard
Software EngineerSenior+Explain owning and debugging infra modules
Describe a time you were responsible for a storage/distributed-systems/infra component (or a similarly low-level, reliability-critical module). The in...
Behavioral & Leadership
12
0
78 people solved
Jan 22, 2026
Hard
Software EngineerSenior+ LockedSolve order-statistics and XOR-triplet problems
This multi-part question evaluates skills in order-statistics and efficient counting for array inversion-like problems, alongside bitwise manipulation...
Coding & Algorithms
20
0
187 people solved
Jan 22, 2026
Medium
Software Engineer LockedMerge collinear overlapping 2D segments
This question evaluates computational geometry skills, numerical robustness, and algorithmic implementation for merging collinear, overlapping 2D segm...
Coding & Algorithms
1
0
35 people solved
Jan 22, 2026
Medium
Software Engineer LockedBuild a sortable, searchable movie list UI
This question evaluates frontend engineering competencies such as UI component architecture, state management, asynchronous data fetching, client-side...
Software Engineering Fundamentals
9
0
90 people solved
Jan 22, 2026
Medium
Software Engineer LockedImplement AUC-ROC, softmax, and logistic regression
This question evaluates practical implementation skills for core machine learning components—computing AUC-ROC (including ROC point generation and han...
Machine Learning
8
0
70 people solved
Jan 22, 2026
Hard
Software Engineer LockedImplement banking, knapsack, and pagination tasks
This multi-part question evaluates stateful system design, ordered event processing and scheduling semantics for an in-memory banking command processo...
Coding & Algorithms
25
0
296 people solved
Jan 22, 2026
Medium
Machine Learning EngineerAnswer conflict, failure, and proud project questions
Behavioral questions Answer the following behavioral prompts using real examples from your experience: 1. Conflict: Tell me about a time you had a con...
Behavioral & Leadership
6
0
93 people solved
Jan 22, 2026
Medium
Software Engineer LockedDetermine whether two nodes are related
This question evaluates understanding of graph representations, reachability and connectivity concepts for ancestry relationships, including handling ...
Coding & Algorithms
29
1
200 people solved
Jan 22, 2026
Medium
Software Engineer LockedMerge K timestamped lists with timestamp coalescing
This question evaluates algorithmic skills in merging multiple sorted sequences, coalescing records by key (timestamp), merging sorted value arrays, a...
Coding & Algorithms
21
0
149 people solved
Jan 22, 2026
Medium
Software Engineer LockedExplain how Kafka works
This question evaluates understanding of Kafka and distributed streaming system concepts, covering core entities (broker, topic, partition, producer, ...
Software Engineering Fundamentals
6
0
55 people solved
Jan 22, 2026
Medium
Software EngineerImplement multi-level task manager APIs
You are implementing an in-memory task management system with a set of APIs that evolve over 4 levels. All APIs receive a timestamp: int parameter. Un...
Coding & Algorithms
24
0
210 people solved
Jan 22, 2026
Medium
Software EngineerImplement a traffic-light UI with JS
Frontend Coding: Traffic Light Build a simple traffic light component using HTML + CSS + JavaScript. Requirements - Render a vertical traffic light wi...
Coding & Algorithms
11
0
165 people solved
Jan 22, 2026
Easy
Data Scientist LockedBuild a predictive model from TurboTax sample data
Build a predictive model from TurboTax sample data evaluates core ML concepts, assumptions, math intuition, training/evaluation trade-offs, and practi...
Machine Learning
12
0
112 people solved
Aug 1, 2025
Medium
Software EngineerDesign a multi-level parking system
Design a multi-level parking system System Design: Multi‑Level Parking System Context Design the backend for a multi‑level parking facility. The syste...
System Design
11
0
146 people solved
Aug 1, 2025
Hard
Software EngineerDesign a prioritized log manager with eviction
Design a prioritized log manager with eviction Design a Log Store with Priority- and Recency-Aware Eviction Context You are designing an in-memory (or...
System Design
7
0
76 people solved
Aug 1, 2025
Medium
Machine Learning EngineerWrite SQL to rank top products per category
You are given two tables: products - product_id (int, primary key) - category (string) order_items - order_id (int) - product_id (int) - quantity (int...
Coding & Algorithms
10
1
119 people solved
Dec 4, 2025
Hard
Software EngineerDesign document-tag classes with concurrency safety
Design document-tag classes with concurrency safety System Design: In‑Memory Document–Tag Manager (Single Node) Context You are designing an in-memory...
System Design
5
0
46 people solved
Jul 31, 2025
Hard
Machine Learning EngineerDesign query generation to maximize CTR
Design query generation to maximize CTR Design an end-to-end query-generation system that maximizes click-through rate (CTR) for a large-scale search/...
ML System Design
6
0
64 people solved
Jul 31, 2025