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 Distributed Rate Limiter
This question evaluates a candidate's ability to design distributed systems with globally consistent state across multiple servers. It tests system de...
Scope and Design a Restaurant Scheduling System
Scope and Design a Restaurant Scheduling System The initial prompt is simply “design a restaurant scheduling system.” Begin by distinguishing three pl...
Design an Audit Logs Service
This question evaluates the ability to design a scalable, multi-tenant audit logging system, covering event storage, tamper-evident retention, and eff...
Prevent Duplicate Payments Under High Load
This system design question tests a candidate's ability to reason about idempotency, distributed consistency, and fault tolerance in high-throughput p...
Design A Real-Time VWAP Analytics Provider
Study a real-time market data system design problem for computing VWAP from high-volume trade ticks across many exchanges. The prompt covers feed hand...
Design Comments for a Collaborative Whiteboard
Design Comments for a Collaborative Whiteboard Design comments for a real-time collaborative whiteboard. The product details below are practice assump...
Design a Ride-Sharing System (Uber-style Core Platform)
Design a Ride-Sharing System (Uber-style Core Platform) Design the core backend of a ride-sharing platform like Uber. Riders open the app, see nearby ...
Design a Streaming Job Scheduler
Design and incrementally build a streaming job scheduler: a service (and supporting class) that continuously ingests tasks and dispatches them to work...
Design a Payment Processing System with Exactly-Once Charging
This question evaluates a candidate's ability to design a payment system that guarantees exactly-once charging under network failures, retries, and du...
Design the Control Plane for a Compute Cluster: Host Monitoring + Job Dispatch
This question assesses the ability to design a distributed control plane that tracks live host state across a large compute fleet under high write con...
Design Global Metrics Monitoring and Real-Time Alerting
Design Global Metrics Monitoring and Real-Time Alerting Design a large-scale monitoring and alerting system for a global microservice architecture. Th...
Design Video Generation Orchestration
Design a scalable system to orchestrate AI video generation (think Sora-style text-to-video). Users submit text prompts to generate videos. For each s...
Design a Fault-Tolerant Video Generation Platform
Design a Fault-Tolerant Video Generation Platform Prompt Design an asynchronous video-generation platform. A user submits generation parameters, check...
Design a Usage-Based Credit Tracking System for a SaaS Platform
This question evaluates a candidate's ability to design a distributed metering and billing system that tracks account balances, authorizes consumption...
Design a sandboxed cloud IDE
System Design: Sandboxed Cloud IDE (Colab-like) Design a multi-tenant, browser-based cloud IDE/notebook that lets users run code inside an isolated sa...
Architect an AI Chatbot for Enterprise Users
Architect an AI chatbot for enterprise users over internal knowledge and tools. `hint Hint 1 Start by stating assumptions, then work from requirements...
Design a Book Price Aggregator
This question evaluates skills in distributed systems design, fault tolerance, scalability, integration with external services, transactional consiste...
Design a Discord-Style Communication Platform
Design a Discord-Style Communication Platform Design a communication platform with organizations, channels, direct messages, and real-time text delive...
Match Tagged Problems to Skilled Programmers at Scale
Model tagged problems and skilled programmers as a bipartite matching problem, then extend the design to distributed and streaming workloads. The exer...
Design a Metrics Monitoring Dashboard
Design a metrics monitoring platform and dashboard for application and infrastructure time series. Services emit metric name, timestamp, numeric value...