Interview Questions
Practice the exact questions companies are asking right now.
Questions
9.7k
Companies
511
Updated
08.16.2026
9.7k 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 EngineerDesign and Scale Quantitative Optimization Workflows
You are discussing two quantitative systems: a tax-loss harvesting optimizer and a multi-period asset-location backtest. Explain the mathematical mode...
System Design
4
0
35 people solved
Jul 31, 2026
Medium
Data EngineerDesign an Incremental Rolling-Metrics Data Pipeline
Design an Incremental Rolling-Metrics Data Pipeline Design a production pipeline that computes rolling-window metrics for approximately 1,000 tickers ...
System Design
4
0
30 people solved
Aug 3, 2026
Medium
Software EngineerIntervals with Exactly X Concurrent Meetings
Intervals with Exactly X Concurrent Meetings Given half-open meeting intervals and an integer X, return every maximal half-open time interval during w...
Coding & Algorithms
3
0
33 people solved
Aug 1, 2026
Medium
Software EngineerImplement Deterministic Merkle Hashing for a Repository
Implement Deterministic Merkle Hashing for a Repository You are given a repository abstraction with operations to identify files and directories, read...
Software Engineering Fundamentals
39
0
304 people solved
Jul 13, 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
3
0
36 people solved
Jul 30, 2026
Medium
Software EngineerDesign Prefix-Aware Deduplication for Homepage Content Rows
Design Prefix-Aware Deduplication for Homepage Content Rows A homepage contains ordered rows of content IDs. Each row has its own ordered candidate li...
Software Engineering Fundamentals
4
0
34 people solved
Jul 31, 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
1
0
23 people solved
Aug 6, 2026
Medium
Software EngineerDesign Cloud Photo Storage and Multi-Device Sync
Design a cloud photo-storage service with upload, download, and multi-device synchronization. Store photo bytes separately from searchable metadata. S...
System Design
2
0
19 people solved
Aug 9, 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
29 people solved
Aug 3, 2026
Medium
Software EngineerDesign a Multi-Channel Notification System
Design a Multi-Channel Notification System Design a notification platform that accepts product events and delivers timely messages through channels su...
System Design
32
0
222 people solved
Jul 2, 2026
Medium
Software EngineerFilter Open Restaurants Through Existing Domain APIs
Filter Open Restaurants Through Existing Domain APIs You are working in an existing codebase with City and Restaurant abstractions. The provided opera...
Software Engineering Fundamentals
1
0
13 people solved
Aug 13, 2026
Medium
Software EngineerExplain What You Seek and an Unexpected Project Outcome
Explain What You Seek and an Unexpected Project Outcome Answer two engineering-manager questions: what you are looking for in your next role, and a pr...
Behavioral & Leadership
4
0
31 people solved
Aug 1, 2026
Medium
Software EngineerFind the Minimum Absolute Difference
Find the Minimum Absolute Difference Implement minimum_absolute_difference(values). Given at least two integers, return the smallest absolute differen...
Coding & Algorithms
4
0
63 people solved
Jul 27, 2026
Hard
Software EngineerDesign a 200-Terabyte Media Migration and Training Input Pipeline
Design a 200-Terabyte Media Migration and Training Input Pipeline Design a one-time transfer of 200 TB of images and videos from an on-premises enviro...
ML System Design
1
0
17 people solved
Aug 10, 2026
Hard
Software EngineerFind a Distributed Mode Efficiently
Find a Distributed Mode Efficiently A large multiset is partitioned across ten workers. Find the value with the highest total frequency across all wor...
System Design
15
0
244 people solved
Jul 8, 2026
Easy
Software EngineerDesign an Amazon Locker Service
Design a Single-Station Package Locker Design the classes and core workflows for one self-service package-locker station. A delivery driver deposits a...
System Design
20
0
269 people solved
Jul 4, 2026
Medium
Software Engineer LockedDesign an LLM Request Batching System
This question evaluates a candidate's ability to design a concurrent batching layer that groups individual requests into shared GPU inference calls un...
System Design
96
0
749 people solved
Jun 23, 2026
Medium
Software EngineerDesign Versioned IDE Settings for Users and Teams
Design a service that stores IDE settings for both users and teams. A team can push settings to its members, while users may also have personal settin...
System Design
12
0
115 people solved
Jul 12, 2026
Medium
Software EngineerDesign a Resilient Chat System
Design a Resilient Chat System Design a chat system and trace data end to end through its components. Support direct and group conversations, message ...
System Design
7
0
112 people solved
Jul 11, 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
4
0
40 people solved
Jul 27, 2026