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
Medium
Software EngineerSenior+Design a Scalable Metrics Monitoring System
Design a Scalable Metrics Monitoring System Design a service that accepts application and infrastructure metrics, stores them over time, supports dash...
System Design
4
0
68 people solved
Jul 23, 2026
Medium
Software EngineerDesign a High-Demand Ticketing System
Design a High-Demand Ticketing System Design a ticketing system for high-demand events. Users should discover events, view seat or section availabilit...
System Design
2
0
25 people solved
Aug 9, 2026
Medium
Software EngineerDesign a Multi-Channel Notification System
Design a Multi-Channel Notification System Design a system that accepts notification requests and delivers them through configured channels such as in...
System Design
4
0
37 people solved
Aug 3, 2026
Medium
Software EngineerDesign Course, Module, and Lesson Progress APIs
Design Course, Module, and Lesson Progress APIs Design authenticated APIs for three application pages: 1. A course list showing course ID, course name...
Software Engineering Fundamentals
0
0
13 people solved
Aug 16, 2026
Medium
Software EngineerDesign a Robust Feature Flag Evaluation Engine
You are given feature definitions and user records as JSON. Each feature flag has a key, an enabled switch, a default Boolean, and an ordered list of ...
Software Engineering Fundamentals
11
0
90 people solved
Jul 24, 2026
Medium
Software EngineerDesign a News Aggregation Service
Design a News Aggregation Service Design a service that ingests articles from many news sources, normalizes and groups related coverage, and lets user...
System Design
4
0
64 people solved
Jul 22, 2026
Hard
Machine Learning EngineerDesign a Dynamically Batched Inference API
Design a Dynamically Batched Inference API Design a high-concurrency HTTP API for language-model inference. Clients submit individual requests, but GP...
System Design
29
0
259 people solved
Jul 8, 2026
Medium
Software EngineerDesign a Reliable Job Scheduler
Design a general-purpose job scheduler. Clients submit jobs for execution at or after a requested time, inspect status, and cancel jobs that have not ...
System Design
4
0
83 people solved
Jul 24, 2026
Medium
Software EngineerImplement a Stateful Chatter Message Store
Implement a Stateful Chatter Message Store Design a Chatter class that can load multiple ordered batches of messages, save its current messages, retur...
Software Engineering Fundamentals
4
0
42 people solved
Jul 30, 2026
Medium
Software EngineerConvert Leveled Rich-Text Tokens into Nested Lists
Convert Leveled Rich-Text Tokens into Nested Lists Problem Implement read_rich_text(tokens). Each token is a pair (level, text) in document order, whe...
Coding & Algorithms
10
0
78 people solved
Jul 21, 2026
Medium
Software EngineerDetermine All Players with Fixed Rankings
Determine All Players with Fixed Rankings There are N players and directed match results. A pair [a, b] means player a defeated player b. Results are ...
Coding & Algorithms
1
0
38 people solved
Aug 1, 2026
Medium
Software EngineerSenior+Compute a Depth-Weighted Sum of a Nested List
Depth-Weighted Sum of a Nested List Problem A nested value is either an integer or a list of nested values. Integers in the outermost list have depth ...
Coding & Algorithms
2
0
27 people solved
Aug 6, 2026
Easy
Software EngineerDesign a Cash Register with Inventory and Profit Tracking
Design a Cash Register with Inventory and Profit Tracking Design an object-oriented cash-register system that manages inventory, completes sales, and ...
Software Engineering Fundamentals
3
0
34 people solved
Aug 3, 2026
Medium
Software EngineerDeep-Dive into a Technical Project
Deep-Dive into a Technical Project Walk through one technical project you know well. Explain the problem, your role, the system or implementation, a c...
Behavioral & Leadership
4
0
34 people solved
Aug 3, 2026
Hard
Software EngineerDesign a Tunable Recurring-Transaction Detector
Design a Tunable Recurring-Transaction Detector You receive a file of transactions and need to identify likely recurring payments such as subscription...
Software Engineering Fundamentals
9
0
166 people solved
Jul 18, 2026
Hard
Software EngineerCount Legal Tic-Tac-Toe Games from the Empty Board
Count Legal Tic-Tac-Toe Games from the Empty Board Start with an empty 3-by-3 Tic-Tac-Toe board. X always moves first, and the players alternate placi...
Coding & Algorithms
20
0
157 people solved
Jul 17, 2026
Medium
Software EngineerDesign a Data-Driven Expense Rule Evaluator
Design a Data-Driven Expense Rule Evaluator Design an expense-policy evaluator whose rules are stored as validated JSON so policies can be added or ch...
Software Engineering Fundamentals
5
0
50 people solved
Jul 27, 2026
Easy
Software EngineerIndex a CSV Movie Catalog for Fast Year-Range Queries
Index a CSV Movie Catalog for Fast Year-Range Queries Design a class that loads a CSV movie catalog once and then answers frequent year-range filters ...
Software Engineering Fundamentals
3
0
33 people solved
Aug 3, 2026
Medium
Software EngineerModel a Turn-Based Cats and Rabbits Board Game
Model a Turn-Based Cats and Rabbits Board Game Design the object model and move-validation flow for a two-player game on a 7 x 7 board. Each player st...
Software Engineering Fundamentals
2
0
26 people solved
Aug 6, 2026
Easy
Software EngineerImplement a Removable Nested-List Iterator
Implement a Removable Nested-List Iterator Implement an iterator over a mutable array of integer arrays. Traversal goes left to right within each inne...
Coding & Algorithms
14
0
145 people solved
Jul 14, 2026