Software Engineer System Design Interview Questions
Practice 938 real System Design interview questions for Software Engineer roles. From companies including Meta, OpenAI, Amazon, Anthropic, Google.
"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"
"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"
"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."
"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."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"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."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"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."
"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."
"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."
"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."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"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."
Design a Distributed Logging System
Design a Distributed Logging System You are asked to design a distributed logging system for a large microservices platform (think of a ride-hailing c...
Design an Automated Jira-Ticket-to-PR System
Design an Automated Jira-Ticket-to-PR System You are building an internal developer-productivity tool. Your company already runs a CI pipeline that pr...
Design a Library Management System (API and Schema)
Design the API and database schema for a library management system. The library lends physical books to registered members. Members can search the cat...
Design a Book Price Aggregator
Design a book purchasing marketplace where your service acts as an intermediary between customers and hundreds of partner bookstores. Your service hol...
Design ad frequency capping
Design an Ad Frequency Capping System Design a frequency capping system for an advertising platform. The system must ensure that a user does not see t...
Design a Centralized Logging System
Design a Centralized Logging System Design a system that collects application logs from a large fleet of microservice instances and makes them durable...
Design a Venue Rental and Booking System (HLD)
Design a venue / facility rental system that lets organizers — schools, clubs, and event organizers — discover and rent out physical venues. Venues ar...
Design Crypto Order Routing
Design the order-placement system for a cryptocurrency trading product. The product lets users place, cancel, and track crypto buy and sell orders. Yo...
Design a To-Do List Service (CRUD, Auth, Rate Limiting, Caching & API Versioning)
Design a to-do list service. Users sign in, create multiple named lists, and within each list create, view, update, and delete tasks. The service is a...
Scale Duplicate File Detection
You have implemented a local duplicate-file finder: given a root directory, it walks the tree, hashes every file, and reports groups of files whose co...
Design a Payment Processing System with Exactly-Once Charging
Design a Payment Processing System with Exactly-Once Charging You are designing the core payment service for a marketplace platform. When a buyer chec...
Design a Ride-Sharing System (Uber-style Core Platform)
Design a Ride-Sharing System (Uber-style Core Platform) Design the core backend of a ride-sharing platform like Uber. Riders open the app, see nearby ...
Design a News Aggregation System (Google News-style)
Design a large-scale news aggregation service similar to Google News. The system continuously discovers and crawls news articles from tens of thousand...
Design the GPU Job Scheduler for a Text-to-Video Generation Service
Design the GPU Job Scheduler for a Text-to-Video Generation Service You are designing the backend that runs generation jobs for a large text-to-video ...
Design a Real-Time Chat System
Design a Real-Time Chat System Design the backend for a real-time one-to-one and group messaging application (think a 1:1 and small-group chat product...
Object-Oriented Design: Hotel Room Booking System
Object-Oriented Design: Hotel Room Booking System Design the object model and core service for a hotel room booking system. The service must let a cli...
Design a Slack-Like Messaging System
Design a Slack-like team messaging system — a real-time collaboration platform organized around workspaces and channels. The system should let users: ...
Design a personalized news aggregator
Design a Google News-style personalized news aggregator. The system continuously collects articles from many third-party publishers by polling their A...
Design Asset Storage System
Design a high-level storage system for digital assets. The system must store and serve multiple asset types, including text documents, images, and vid...
Design an Online Coding Judge Platform
Design an Online Coding Judge Platform Design an online coding-practice and judging platform (similar to LeetCode or Codeforces). Users should be able...