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 Queue And Taxi Matching Services
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Design an exception monitoring system with top‑K
System Design: Exception Monitoring with Top-K Design an exception monitoring system for a microservices environment. Core requirements - Services emi...
Design a news aggregation and feed service
Assume you are asked to design the backend for a news aggregation and feed service. Requirements: - The system pulls articles from multiple third-part...
Design driver heat map and discuss consensus
Real-Time Driver Heat Map with Top-K Busiest Cells, Plus Paxos vs. Raft Context You are designing a real-time heat map for a ride-hailing platform. Dr...
Design a price tracking system
Question Design a price tracking system for e-commerce sites (similar to price-history tools such as CamelCamelCamel or Keepa). The system ingests pro...
Design a global multi-game leaderboard
Design a Global, Multi‑Game Leaderboard (Ladder) Service You are designing a global leaderboard platform used by many different games and modes. Each ...
Design a packet reassembler API
Design a PacketAssembler API for Streaming Fragments Context and Assumptions - You are building a small component that assembles packets from a byte s...
Design a Top-K Ranking Service
Design a service that returns the top K most frequent items for a configurable time window, such as the top 10 search queries in the last hour or the ...
Design a high-scale URL shortener
Design a URL shortening service. Core APIs / Features - Create short URL: accept a long URL and return a short code / short URL. - Redirect: given a s...
Design a device owner lookup service
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Identify and fix deadlock in locked code
Multithreaded Deadlock: Diagnose and Fix Context You have concurrent code that acquires multiple locks and occasionally deadlocks. The underlying issu...
Build and optimize a video playlist component
Question Design and implement a video playlist component in React (functional components) that meets the following requirements: 1. Display a list or ...
Design a URL shortening service
Design a URL shortening service similar to TinyURL. Requirements Functional - Create a short URL for a given long URL. - Redirect: given a short code,...
Design a Top-K trending items service
Design a system that returns the Top K items (e.g., videos/posts/products) by popularity. Requirements - API to fetch: GET /topk?window=10m&k=100 retu...
Design a simple greeting-card web app
Design a web application for creating and viewing text-only greeting cards with an emphasis on shipping quickly (MVP). Core user stories - A user can ...
Design a weather aggregation system
System Design: Weather Data Aggregation (10-minute Updates) Context Build a service that periodically fetches weather data from third-party providers ...
Design a Market Surveillance Platform
Design a customer-facing market surveillance platform for financial exchanges. Financial exchanges submit trading orders to the platform. An example o...
Design a high-level logging system
Design a high-level centralized logging system for a company. Assume many services (microservices, batch jobs) running across multiple hosts/container...
Design multi-currency pricing end-to-end
System Design: Multi-Currency Price Display and Booking Context You are building a global travel marketplace where guests discover listings, view pric...
Design a scalable URL shortener with expiration and security
System Design: URL Shortening Service at Internet Scale You are asked to design a URL shortening service for hundreds of millions of users with high a...