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 EngineerDesign a Pre-Trade Risk Check for an Electronic Order Path
Design a Pre-Trade Risk Check for an Electronic Order Path Design a pre-trade risk-checking service for an electronic trading path. A strategy submits...
System Design
2
0
17 people solved
Jul 1, 2026
Medium
Software EngineerInternTeach a New Technical Concept to an Undergraduate
Teach a New Technical Concept to an Undergraduate Imagine the interviewer is an undergraduate who has completed an introductory programming course but...
Behavioral & Leadership
2
0
28 people solved
Jul 1, 2026
Medium
Software EngineerAnswer Behavioral Questions About Deadlines, Feedback, and Ambiguity
Prepare behavioral answers about tight deadlines, critical feedback, ambiguous requirements, and AI-related work experience. `hint Hint 1 Start by sta...
Behavioral & Leadership
10
0
157 people solved
Jul 1, 2026
Medium
Software EngineerDesign an RSS News Feed Service
Design an RSS news feed service. The service lets users subscribe to RSS sources, ingests articles from those sources on a schedule, stores article me...
System Design
13
0
171 people solved
Apr 29, 2026
Hard
Machine Learning Engineer LockedDesign an LLM-Based Conversational Assistant (Chatbot)
This question evaluates the ability to design an end-to-end LLM-based conversational assistant, covering pretraining, alignment, retrieval, and servin...
ML System Design
6
0
66 people solved
Jun 27, 2026
Medium
Software Engineer LockedDesign Catalog Update Pipeline
This question evaluates a candidate's ability to design scalable, fault-tolerant catalog update pipelines, including partitioning for horizontal scala...
System Design
22
0
357 people solved
Feb 1, 2026
Medium
Backend EngineerNew GradDesign Scalable Notification Rate Limiter
Design a production-grade rate limiter for notification sending that enforces limits at three levels of an organizational hierarchy. The system expose...
System Design
111
0
821 people solved
Feb 18, 2026
Medium
Machine Learning EngineerSenior+Design payment fraud detection
Design a machine learning system for fraud detection in an online payment platform. The system should score transactions before or shortly after autho...
ML System Design
12
0
158 people solved
Apr 18, 2026
Medium
Product AnalystSenior+Evaluate Two Partnerships with Unit Economics and Break-Even Analysis
Evaluate Two Partnerships with Unit Economics and Break-Even Analysis Work through two profitability cases. In the first, a restaurant considers a dis...
Product / Decision Making
2
0
29 people solved
May 4, 2026
Medium
Backend EngineerCritique a Recent Engineering Project and Explain What You Would Redo
Critique a Recent Engineering Project and Explain What You Would Redo Choose a meaningful engineering project from roughly the last two years. Give a ...
Behavioral & Leadership
4
0
39 people solved
Jul 17, 2026
Medium
Software EngineerDesign a Product Photography Upload Service
Design a Product Photography Upload Service Design a service for a commerce platform's product-photography workflow. A merchant ships an item to a stu...
System Design
10
0
82 people solved
Apr 28, 2026
Medium
Data ScientistDesign and Analyze Airbnb Locker Experiment
Airbnb is considering launching a luggage locker feature that lets guests store their bags before their scheduled check-in time, so they don't have to...
Analytics & Experimentation
54
0
380 people solved
Feb 21, 2026
Medium
Software EngineerDesign Calendar Event Conflict Handling
Design the event settings and conflict-handling system for a large-scale calendar product similar to Google Calendar. Users can create, update, and de...
System Design
56
0
382 people solved
Apr 25, 2026
Medium
Software Engineer LockedHigh Availability and Failover for a Primary-Replica Database
This question evaluates a candidate's understanding of database high-availability design, including replication semantics, failure detection, and fail...
System Design
13
0
93 people solved
Jun 19, 2026
Medium
Software EngineerSimulate Players Moving Under a Watcher's Gaze
Simulate Players Moving Under a Watcher's Gaze A one-dimensional road starts at 0 and ends at length. Each player begins at a supplied position and wa...
Coding & Algorithms
1
0
16 people solved
Jul 8, 2026
Medium
Data ScientistExplain Why You Want an Analytics Role at Airbnb
Why are you looking for a new opportunity, and why are you interested in an analytics role at Airbnb? Build a concise recruiter-screen answer that con...
Behavioral & Leadership
1
0
23 people solved
Jul 8, 2026
Medium
Software Engineer LockedMaintain Price Levels For A Single-Symbol Order Book
Review a single-symbol order book implementation prompt with insert, modify, cancel, and price-level lookup callbacks. The interview topic focuses on ...
Coding & Algorithms
83
4
803 people solved
Jun 26, 2026
Medium
Software EngineerSenior+ LockedImplement Layered Endpoint and Global Rate Limits
Design an in-process rolling-window rate limiter that enforces both per-endpoint and backend-wide limits atomically. Examine boundary semantics, concu...
Software Engineering Fundamentals
3
0
43 people solved
Jun 15, 2026
Medium
Software Engineer LockedFind and Fix C++ Ownership Bugs: Double Free, Shallow Copy, and Object Slicing
This question evaluates a candidate's understanding of C++ object lifetime, copy semantics, and polymorphism. It tests the ability to spot shallow-cop...
Software Engineering Fundamentals
4
0
36 people solved
Jun 15, 2026
Medium
Software EngineerPerform an External Merge Sort with a Heap
Perform an External Merge Sort with a Heap Sort an integer sequence using the two phases of external merge sort: create sorted runs that fit within a ...
Coding & Algorithms
3
0
27 people solved
Jul 12, 2026