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 EngineerAnswer hiring manager behavioral questions
Hiring manager round: behavioral questions Prepare structured answers to the following questions (with likely follow-ups). Use concrete examples from ...
Behavioral & Leadership
24
0
171 people solved
Jan 22, 2026
Hard
Software Engineer LockedDesign a Hotel Booking System
This question evaluates system design and backend architecture competencies, including data modeling, transactional integrity, concurrency control, sc...
System Design
39
0
369 people solved
Feb 1, 2026
Hard
Software Engineer LockedImprove concurrency beyond a single lock
This question evaluates mastery of concurrent programming and synchronization concepts, focusing on correctness versus performance trade-offs when pro...
Software Engineering Fundamentals
28
0
319 people solved
Feb 1, 2026
Medium
Software EngineerDesign a Photo Management Service
Design a photo management system where users can upload photos, view them later, and organize them into albums. The system should support creating alb...
System Design
27
0
209 people solved
Mar 16, 2026
Medium
Data ScientistDetermine departure time from travel times
Canoe and River Current Timing Context Two friends paddle on a river with a constant current of 2 mph. Their paddling speed relative to the water is c...
Statistics & Math
10
0
121 people solved
Aug 11, 2025
Hard
Software Engineer LockedDesign a high-concurrency LLM inference service
This question evaluates a candidate's ability to design a high-concurrency LLM inference platform, assessing competencies in GPU utilization and memor...
ML System Design
62
0
506 people solved
Feb 11, 2026
Medium
Software EngineerInvestigate High Memory Usage
You are the on-call engineer for a delivery platform. System context - Couriers use a mobile app to accept and complete deliveries. - The mobile app c...
Software Engineering Fundamentals
37
0
287 people solved
Jan 31, 2026
Medium
Machine Learning EngineerSenior+ LockedDesign Detection Systems for Risk and Safety
This question evaluates a machine learning engineer's competence in designing end-to-end detection systems for risk and safety, covering skills in dat...
ML System Design
8
0
77 people solved
Feb 21, 2026
Medium
Data EngineerDesign a clickstream ingestion and aggregation pipeline for billions of events per day
Design a clickstream ingestion and aggregation pipeline for billions of events per day You are designing the data platform for a large consumer stream...
System Design
10
0
131 people solved
Mar 27, 2026
Medium
Software EngineerAnswer leadership and ambiguity scenarios
Question Answer the following behavioral & leadership questions with concrete examples. Use a structured format such as STAR (Situation, Task, Actions...
Behavioral & Leadership
21
0
170 people solved
Jan 1, 2026
Medium
Data ScientistDesign Product-Description Content Moderation at Marketplace Scale
Prompt Design a system that detects and handles inappropriate text in seller-uploaded product descriptions for a marketplace containing billions of pr...
ML System Design
4
0
42 people solved
May 4, 2026
Medium
Frontend Engineer LockedBuild a React Parking Lot Manager
This question evaluates frontend engineering skills in React, including functional components and hooks, client-side state management, UI design, algo...
Software Engineering Fundamentals
23
0
188 people solved
May 4, 2026
Medium
Frontend EngineerDesign a Scalable Calendar Service
Design an online calendar service (think Google Calendar) that supports both individual and shared calendars. Users must be able to create, update, de...
System Design
13
0
96 people solved
May 4, 2026
Hard
Software Engineer LockedDesign a Cache with Hit Counts
This question evaluates a candidate's competence in system design, data structures, concurrency, and observability by requiring a key-value cache that...
Software Engineering Fundamentals
41
0
359 people solved
Mar 15, 2026
Easy
Data ScientistNew GradCompute and plot a precision–recall curve
You are given model outputs for a binary classifier: - y_true: an array of 0/1 ground-truth labels of length n. - y_score: an array of predicted score...
Coding & Algorithms
8
0
78 people solved
Nov 24, 2025
Medium
Machine Learning EngineerMaintain Entropy for a Streaming Distribution
A stream emits categorical observations one at a time. After each observation, report the empirical Shannon entropy of all observations seen so far: H...
Statistics & Math
6
0
53 people solved
Aug 23, 2025
Medium
Software EngineerWhy Anthropic and its values?
This interview evaluates culture fit, value alignment, and critical thinking for Anthropic. Prepare one coherent discussion that addresses all of the ...
Behavioral & Leadership
33
0
245 people solved
Oct 19, 2025
Medium
Software EngineerSenior+Solve stock profit and vertical tree traversal
You have a 60-minute coding interview with two algorithm questions: 1) Max profit from one stock trade - Input: an integer array prices, where prices[...
Coding & Algorithms
13
0
140 people solved
Feb 9, 2026
Hard
Machine Learning EngineerDesign an ML search system with RAG
Design an ML search system with RAG System Design: ML-Powered Enterprise Search with RAG Design an ML-powered enterprise search system using Retrieval...
ML System Design
61
0
414 people solved
Jul 15, 2025
Medium
Software Engineer LockedDesign an Online Coding Contest Platform
This question evaluates a candidate's ability to design a scalable, secure System Design for an online coding contest platform with emphasis on safely...
System Design
8
0
94 people solved
Apr 7, 2026