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 Search Autocomplete
Design a large-scale autocomplete service for a search engine. As a user types a query prefix, the system should return the top 5 suggested full queri...
Design multi-tenant ingestion and processing platform
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Design scalable notification system
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Design at-least-once notification delivery
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Design a Google News-like aggregator
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Optimize a compute kernel with a simulator
Performance Optimization Plan for a Compute Kernel Context You are given: - A compute kernel (single critical function or set of loops) to optimize. -...
Describe how you use Kubernetes
System Design: Practical Kubernetes (K8s) Use and Operations Context: In a technical screen, you are asked to describe how you have used Kubernetes in...
Design a donation service for a 3‑day charity
System Design Prompt You are designing an online donation service for a 3-day charity campaign. Requirements - Donors can: - Select a charity campai...
Design a file search module like UNIX find
Design Task: Object-Oriented module that mimics UNIX find Context Design an object-oriented library that replicates the core functionality of the UNIX...
Design a marketplace price tracking service
Design a large-scale product price tracking service similar to an e-commerce price monitor. Users can submit product links from a major online marketp...
Design comments and async image generation
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Design an At-Most-Once Job Scheduler
Design a distributed job scheduler that supports both one-time and recurring jobs. Requirements: - Clients can create jobs with a schedule, payload, r...
Design a scalable news feed system
Design the backend for a social app's news feed You are designing the backend that powers a mobile social app's home feed (a Twitter/Instagram-style h...
Design an ads data model
System Design / Data Modeling: Ads Data Model Design the data model (logical schema) for an ads platform that supports: - Advertisers creating campaig...
Design Slack-like multi-tenant global messaging system
Design a team messaging platform similar to Slack that supports multiple organizations (multi-tenancy) and is deployed globally. Functional requiremen...
Design real-time game matchmaking service
Design a Real-Time Game Matchmaking Service Context You are designing the matchmaking subsystem for an online multiplayer game that supports multiple ...
Design JSON serialization for circular references
Design a JSON Serialization/Deserialization Strategy With Cycles and Determinism You are designing a JSON-based serializer/deserializer for a graph of...
Design a scalable network I/O service
System Design: High-Volume Network I/O Backend (Files and Streaming) Context Design a backend service that supports millions of users uploading and do...
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 a meeting scheduler and shopping cart
You are asked to do two system-design prompts. Prompt A: Meeting Scheduler Design a meeting scheduling system (similar to a calendar + scheduling assi...