Software Engineer System Design Interview Questions
Practice 1,082 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 ChatGPT-like conversational assistant
Design a ChatGPT-like conversational assistant product. Assume you need to support: - Multi-turn chat with conversation history - Streaming responses ...
Design several large-scale systems
This prompt evaluates expertise in large-scale system architecture and distributed systems, including competencies in API and storage design, scalabil...
Design a dependency-aware job scheduler
This question evaluates understanding of designing scalable, dependency-aware job schedulers and related competencies in distributed systems, includin...
Design a Scalable News Feed
This question evaluates a candidate's competency in large-scale system design, specifically architecture, data modeling, API design, feed delivery str...
Design a Google Photos–like service
System Design: Google Photos–like Service (Web + Mobile) Context Design a large-scale consumer media service that ingests, stores, indexes, and serves...
Design a multi-tenant CI/CD platform
Question Design a multi-tenant CI/CD system that runs pipelines triggered by Git activity, isolates tenants from one another, and scales to thousands ...
Design a flexible expense reimbursement system
System Design: Expense Reimbursement with Pluggable Rules and Group Constraints Context Design an enterprise expense reimbursement platform where admi...
Design a basic banking system
Design a Basic Online Banking System with Safe Money Movements Problem Design a minimal but production-minded online banking service. The service must...
Design a ChatGPT-like serving system
This question evaluates expertise in designing scalable machine-learning inference systems, covering chat-completion architecture, GPU capacity planni...
Design an On-Demand Delivery Platform
Design an on-demand local delivery marketplace for restaurants or grocery stores. The platform should support customers browsing merchants, building s...
Design an object store with deduplication
System Design Prompt Design a simplified cloud object storage service (similar to an object store) that allows users to upload and download files. The...
Design a Marketing Email System
This question evaluates system design and engineering competencies for building a scalable, reliable marketing email platform, covering scheduling, ti...
Design a collaborative spreadsheet
Design an online spreadsheet service similar to Google Sheets. Users can open the same workbook concurrently and directly edit cells, formulas, rows, ...
Design a Secure Medical Audio Pipeline
This question evaluates a candidate's competency in designing secure, compliant, and scalable backend systems for handling sensitive medical audio dat...
Design Distributed Cloud Job Scheduling
This question evaluates proficiency in distributed systems design, resource scheduling and placement, stateful job orchestration, API and data-model d...
Design a Ride-Hailing Matching System
Design a ride-hailing matching system similar to a taxi or rideshare application (e.g. Uber, Lyft, DiDi). The interview focuses on the driver-location...
Design a Real-Time Logging System
Design a logging/telemetry system for a large application platform. Requirements: - Many services send log or metric events to the system - Event subm...
Design a typeahead search service
Design a search autocomplete system for a large application. As a user types a prefix, the system should return relevant suggestions with low latency....
Design A Scalable Web Crawler
Design a scalable web crawler that discovers, fetches, parses, and stores web pages for downstream use such as search indexing or content analysis. Yo...
Design RSS Feed and Temporary Mail
This question evaluates skills in large-scale system design, covering API design, ingestion and normalization pipelines, caching and freshness trade-o...