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 a scalable image-based social network
Design the backend system for a social networking website primarily focused on sharing images (similar in spirit to an image-centric social app). User...
Design resource loader and ROS-like pub/sub
System Design: Resource Loader and ROS-like Publish/Subscribe Context You are designing two foundational systems for a large-scale, real-time interact...
Design a scalable banking system
System Design: Core Banking Platform Problem Design a banking system that supports: - Account creation - Balance inquiry - Deposit and withdrawal - At...
Design an artifact store on K8s and Cassandra
System Design: Exactly-Once Creation by Name on Cassandra, Deletes, and Read API Design Context You run a Java web API on Kubernetes backed by a Cassa...
Compare Paxos and Raft
Consensus over a Replicated Log: Paxos vs. Raft Context You are designing a fault-tolerant replicated log to back a stateful service (e.g., a key-valu...
Design a reusable React comment component
Design and Implement a Reusable Comment Input-and-Feed Component in React Goal Build a reusable React component that provides a comment input and feed...
Design a configuration subscription service
System Design: Configuration Service with Subscriptions Context Design a multi-tenant configuration service that stores key–value configuration and le...
Propose research to improve business
Prompt: Propose Research Directions and Solution Approaches to Improve Business Performance Context Assume a large-scale, web/mobile, cloud-backed pro...
Design secure Kubernetes with CI/CD
Kubernetes Architecture, Troubleshooting, Security, and CI/CD (GKE/EKS) Context: You are the on-call software engineer for a managed Kubernetes cluste...
Design in-memory threshold switcher
Design an In-Memory Memory-Pressure Switcher Context You are designing an in-memory component ("Switcher") that gates expensive work (e.g., request ad...
Improve and measure service performance
Assessing and Improving a Service’s Performance Under High Load Context You are responsible for a user-facing, stateless HTTP microservice that handle...
Design a streaming ads system
System Design: Ad-Insertion Platform for Live and On-Demand Video Context You are designing an end-to-end ad-insertion platform for a consumer video s...
Design product co-occurrence analytics API
Design RESTful APIs for Co‑Purchase Analytics Context You are designing backend APIs to power a "related products" module based on co‑purchase behavio...
Design a risk management ticketing system
Design a Risk Management Ticketing System Context You are designing a ticketing platform used by human users (analysts, managers, admins) and an autom...
Design distributed parallel job processing
Design a Distributed System for Parallel Job Execution Context You are asked to design a highly available, horizontally scalable service that executes...
Design a content processing service
System Design: High-Throughput Content Processing Service Context Design a content processing and moderation service for a large-scale media app. Cont...
Design ticketing and coding practice platforms
You are asked two separate system design questions. --- 1. Design an online event ticketing platform (like Ticketmaster) Design a large-scale web serv...
Design a Group Chat / Messaging System
Design a Group Chat / Messaging System Design the backend for a real-time group chat feature embedded in a large consumer product (think of the in-app...
Design weekly comment digest
Design a service that sends a weekly email digest of the top comments on each post to the post owner. Requirements: - Posts receive comments throughou...
Design VPC, IP plan, management, storage, SSO
System Design: Multi‑Layer VPC, IP Planning for 2,000 Servers, Fleet Management, Shared Storage, and SSO Context Design a production‑grade, multi‑AZ n...