Software Engineer System Design Interview Questions
Practice 904 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 paginated list UI and pagination API
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Design a package installer with dependencies
Design a package installer system (like a simplified OS/package manager) that installs packages while respecting dependency resolution. Requirements -...
Design bookstore and chat messaging systems
You are given two independent system-design problems. --- Question A — Design an Online Bookstore Backend Design the backend for a large-scale online ...
Design flight-price search service
System Design: Cheapest Flight Search Across Multiple Providers Context Design a backend system that searches multiple flight providers (airlines, OTA...
Design a PKI for internal mTLS and certificates
System Design Prompt Design a Public Key Infrastructure (PKI) for an organization to issue and manage certificates used for: - Internal mTLS between s...
Design a scalable photo deduplication service
System Design: Productionizing Duplicate-Photo Removal at Scale Context Design a production system that detects and removes duplicate or near-duplicat...
Design collaborative document editing backend
You are asked to design the backend for a real-time collaborative document editor similar to Google Docs. The interviewer is specifically interested i...
Design a Dockerized GPU test pipeline
Design a Docker-Based Environment for Automated Graphics Tests on NVIDIA/AMD GPUs Context You need to design a reproducible, secure, and debuggable CI...
Design real-time exchange data sync system
System Design: Real-Time Multi-Exchange Stock Data Ingestion and Live Web Page Context You are asked to design a production system that continuously i...
Design cron scheduler and reward/review system
System Design: Company-Wide Scheduler Platform and Employee Review & Rewards System You are designing two platforms for a fast-growing, multi-tenant t...
Design signals across power and clock domains
Question In a SoC with two power domains A and B, design the interface for a control signal signal_1 (a registered 1-bit control such as an enable/sta...
Design Stock Price Alerts
Design a stock price alert system that allows users to create alerts for securities and receive notifications when the market price crosses a specifie...
Design an online coding platform
Design an online coding practice and interview platform (similar to well-known coding challenge sites). The platform should allow: - Users to sign up,...
Design Thread-Safe Tagging and Bookstore Systems
System Design and OO Design (Onsite) Part 1: Thread-Safe Document–Tag Design Design object-oriented classes for documents and tags in a multi-threaded...
Design a nearby places (proximity) service
Design a proximity search service like Yelp/Google Maps. Requirements: - Store places with (place_id, name, lat/lng, category, rating). - Query: “find...
Design an online chess platform
Design an online chess platform. Requirements: - User matchmaking (ranked/unranked). - Real-time gameplay with low latency moves. - Enforce game rules...
Design a ticket or hotel reservation system
Design a reservation system (Ticketmaster-style event seats or hotel rooms). Requirements: - Users search availability by date/event. - Users select s...
Design Telehealth Consultation Queue
Design a web-based queuing application for a health-insurance company that offers free 24/7 telehealth access to its members through a website and mob...
Design an internal interest-matching platform
System Design Prompt: Internal Employee Interest Matching Platform Context Design an internal-only platform that connects employees with similar inter...
4.1 Design a Live Streaming Platform
This is a classic system design question that tests your ability to handle real-time data at massive scale. Live streaming sits at the intersection of...