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 EngineerDesign Emergency Notification System
Design a disaster or emergency notification system for an organization such as a city government, university, or large company. The system should allo...
System Design
7
1
63 people solved
Apr 6, 2026
Medium
Software Engineer LockedWalk Through One Past Project
This question evaluates system design, technical ownership, communication, and leadership competencies, including the ability to explain architecture,...
Behavioral & Leadership
5
0
76 people solved
Feb 17, 2026
Medium
Machine Learning EngineerOptimize Tensor Runtime Kernels
You are responsible for optimizing an ML framework runtime on an accelerator. A model has high latency and occasional memory pressure. Explain how you...
Software Engineering Fundamentals
9
0
71 people solved
Nov 27, 2025
Medium
Software EngineerNew GradSolve interval, grid-fill, and heap tasks
You are asked to solve the following algorithmic problems. Problem 1: Concurrent users from online intervals You are given n inclusive time intervals ...
Coding & Algorithms
16
0
202 people solved
Nov 27, 2025
Medium
Machine Learning EngineerInternDesign an HR Document AI Platform
Design an internal AI platform for a bank's HR organization. The platform should ingest HR documents such as policies, benefits guides, onboarding man...
ML System Design
14
0
102 people solved
Mar 12, 2026
Medium
Software EngineerDesign a Fault-Tolerant Meeting Bot Allocation System
Design a Fault-Tolerant Meeting Bot Allocation System Design the infrastructure between a web UI and a bot pool. A user submits a meeting URL and opti...
System Design
0
0
9 people solved
Dec 16, 2025
Medium
Software EngineerDesign a donations service with 3-day rolling totals
Design a service that ingests donations and serves rolling 3-day donation totals. Requirements Core features 1. Ingest donation events: - Each dona...
System Design
25
0
304 people solved
Dec 16, 2025
Medium
Software EngineerDesign an image crawler for unlimited URLs
Design a service that crawls images starting from a set of root URLs. Requirements: - Input: one or more root URLs. - Crawl pages, discover links, and...
System Design
9
0
70 people solved
Jan 5, 2026
Easy
Data Scientist LockedChoose single queue vs multiple queues
This question evaluates understanding of queueing theory, stochastic modeling of wait times, variability analysis, and the ability to state modeling a...
Analytics & Experimentation
8
0
74 people solved
Feb 16, 2026
Easy
Data EngineerDesign a scalable URL shortener
Design a highly scalable URL shortening service, similar to Bitly or TinyURL. The service converts long URLs into short links and redirects short-code...
Coding & Algorithms
21
0
145 people solved
Jan 22, 2025
Medium
Software EngineerDesign a Top-K search words service
Scenario Design a service that tracks user search queries and returns the Top-K most searched words/queries. Requirements Functional - API to record a...
System Design
22
0
159 people solved
Oct 20, 2025
Medium
Software EngineerDescribe difficult project, conflict, and PM collaboration
Behavioral round (15 minutes) Answer the following prompts using concrete examples from your experience. 1. Most difficult project - Describe the m...
Behavioral & Leadership
5
0
74 people solved
Dec 15, 2025
Hard
Software EngineerImplement an in-memory SQL-like table
Problem Implement a simple in-memory database for one table. All values are strings. Each row is identified by a rowKey (string). Each row contains co...
Coding & Algorithms
65
0
1076 people solved
Dec 15, 2025
Medium
Software EngineerAnswer common behavioral questions with follow-ups
Behavioral interview prompt set You are in a standalone Behavioral (BQ) interview. The interviewer asks straightforward, keyword-based questions and t...
Behavioral & Leadership
11
0
133 people solved
Dec 15, 2025
Hard
Machine Learning EngineerDesign a search query autocomplete system
Question Design a search autocomplete system that suggests completions as the user types. Requirements - Sub-100ms latency per keystroke. - Suggestion...
System Design
23
0
259 people solved
Dec 15, 2025
Easy
Data ScientistSolve SQL and Python OA tasks
Complete the following two online-assessment tasks. Task A — SQL You are given two tables: customer - customer_id INT - customer_name VARCHAR - purcha...
Data Manipulation (SQL/Python)
4
0
60 people solved
Feb 16, 2026
Medium
Data Scientist LockedCalculate CTR and ad revenue
This question evaluates proficiency in data manipulation and analytics, specifically metric calculation (CTR) and multi-currency revenue aggregation, ...
Data Manipulation (SQL/Python)
7
1
79 people solved
Jan 25, 2026
Easy
Software Engineer LockedSolve meeting and tree problems
This question evaluates skills in interval manipulation and boolean-based merging, along with binary-tree traversal and side-view extraction for strin...
Coding & Algorithms
1
0
28 people solved
Apr 5, 2026
Easy
Software Engineer LockedFind Unique Target-Sum Pairs
This question evaluates array-processing skills, correctness in handling duplicate values, and the ability to identify unique value pairs whose sums m...
Coding & Algorithms
3
0
26 people solved
May 2, 2026
Medium
Software Engineer LockedDetermine Whether a Word Exists in a Graph
This question evaluates proficiency in graph algorithms and backtracking techniques, including traversal strategies, cycle avoidance, and state manage...
Coding & Algorithms
6
2
40 people solved
May 2, 2026