Software Engineer System Design Interview Questions
Practice 1,093 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 Book Purchase Broker
Design a system for brokering book purchase requests across partner bookstores with target price constraints and expiration windows. The question eval...
Design a Column-Queryable KV Database
This question evaluates understanding of distributed storage architectures, secondary indexing and queryability for sparse, column-oriented key-value ...
Design a natural-disaster notification system
This question evaluates system design competencies including large-scale geospatial data processing, spatial indexing, event-driven notification pipel...
Design globally consistent metadata service
This question evaluates expertise in distributed systems and system design, focusing on linearizable consistency, multi-region replication and partiti...
Design first-time Kubernetes deployment in new cloud
This question evaluates system design and cloud platform engineering skills focused on first‑time Kubernetes deployment, covering account bootstrappin...
Design a Ticketmaster-like ticketing system
This question evaluates system design and distributed-systems competencies for an online event ticketing platform, focusing on scalability, concurrenc...
Design a Multi-Agent Chat Backend
Design the backend for an LLM-powered chat product used by customers in a financial-technology setting. The interviewer will show a simple demo of a c...
Design a ChatGPT-like web chat UI
This English summary evaluates a question that assesses front-end–focused system design competencies such as UI architecture, real-time streaming inte...
Design a concurrent web crawler
Question Design and implement a concurrent web crawler. Starting from one or more seed URLs, the crawler should fetch pages, extract links, deduplicat...
Design a multi-tenant Slack-like messenger
System Design: Multi‑Tenant B2B Team Messaging (Slack‑like) Design a multi‑tenant, enterprise‑grade team messaging platform similar to Slack. Function...
Design deduplicated file storage on filesystem
System Design Task: Filesystem-Only, Multi-tenant, Deduplicated File Storage You are asked to design a multi-tenant file storage service with the foll...
Design auth, session security, and top-N users
Web App Design: Authentication, Security, and Top-N Active Users Context: Build a browser-based web application where a user signs in and the page dis...
Design a distributed system end-to-end
System Design: Multi-Tenant Interactive Analytics Platform Context Design a distributed, multi-tenant analytics service that lets customers: - Ingest ...
Design scheduled payments and cancellation
Question Design a scheduled payments service for Coinbase that lets users create, list, update, execute, and cancel future-dated payments — both one-t...
Design an Airbnb wallet with holds and payouts
Design and Implement an Airbnb-Style Wallet (Ledger, Holds, FX, Idempotency) Problem Design and implement an Airbnb-style wallet system. This is an OO...
Design a scalable photo deduplication service
Design a scalable photo deduplication service System Design: Productionizing Duplicate-Photo Removal at Scale Context Design a production system that ...
Design an in-memory cloud storage system
Design an in-memory cloud storage system In-Memory Cloud Storage: Files, Discovery, Users, and Compression Context: Design an in-memory storage librar...
Design a distributed job scheduler service
Design a distributed job scheduler service Design a horizontally scalable, multi-tenant job scheduler service that supports both one-off / ad-hoc jobs...
Design a Scalable Product Authentication Platform
Design the authentication infrastructure for a cloud product. Users log in with email and password; the design should be able to add external identity...
Design Netflix viewport deduplication
Design Netflix viewport deduplication Design an Algorithm to Ensure No Duplicates in the First Netflix Home-Page Viewport Context You are rendering a ...