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."
High Availability and Failover for a Primary-Replica Database
This question evaluates a candidate's understanding of database high-availability design, including replication semantics, failure detection, and fail...
Design an Offline Merchant Payment System with Reconciliation
Prepare for a OpenAI system design interview about design an offline merchant payment system with reconciliation. This question focuses on requirement...
Design multi-region banking data synchronization
System design: Global bank with multi-region data consistency A digital bank operates in multiple geographic regions (e.g., EU, US, APAC). Users can l...
Design a Metrics Ingestion Pipeline
This question evaluates a candidate's ability to design a large-scale distributed system for ingesting time-series metrics at high throughput. It test...
Design Nearby Search for Autonomous Vehicles
Design a nearby-search system for autonomous vehicles. A query supplies a location and search criteria, and the system returns nearby vehicles that cu...
How to stream a large file to 1000 hosts fastest
This question evaluates system design and distributed-systems skills, especially bandwidth and bottleneck analysis, replication and pipelining trade-o...
Design a Pre-Trade Risk Check for an Electronic Order Path
Design a Pre-Trade Risk Check for an Electronic Order Path Design a pre-trade risk-checking service for an electronic trading path. A strategy submits...
Design Crypto Order Routing
Design the order-placement system for a cryptocurrency trading product. The product lets users place, cancel, and track crypto buy and sell orders. Yo...
Design a CI/CD pipeline with scheduler
Design a production-grade CI/CD pipeline (with its job scheduler) You are designing the internal CI/CD platform for a large engineering organization t...
Design a To-Do List Service (CRUD, Auth, Rate Limiting, Caching & API Versioning)
This system design question evaluates practical full-stack architectural thinking across REST API design, authentication, rate limiting, and caching i...
Design a chargeback ingestion and export system
This question evaluates system design skills around reliable ingestion and scheduled export of financial transaction records, specifically testing com...
Design Room-Level Hotel Reservations Without Double Booking
Design Room-Level Hotel Reservations Without Double Booking Design a hotel reservation service that models individual room numbers rather than abstrac...
Design a Food Delivery Cart
This question evaluates competency in designing stateful, user-facing subsystems including data modeling, API design, session persistence, caching, co...
Design Human Avoidance for Warehouse Robots
This question evaluates sensor fusion, perception-to-motion data flow, short-horizon motion planning, and real-time safety-critical decision-making fo...
Design an AI Gateway
This question evaluates system design competencies for a multi-tenant AI gateway, including architectural design, unified API and authentication patte...
Design a Server Metrics Monitor
Design a server metrics monitoring system that periodically pulls metrics from a fleet of servers and makes them available for dashboards and alerting...
Design a topic-based news subscription system
Topic-Based News Subscription Service — Design and Implementation Context Build an in-memory service that manages subscribers and delivers relevant ne...
Design Catalog Update Pipeline
This question evaluates a candidate's ability to design scalable, fault-tolerant catalog update pipelines, including partitioning for horizontal scala...
Design a news aggregator system
Rippling Onsite — Two Parts This Software Engineer onsite has two parts: a system design and a short coding follow-up. Both are below. Treat them as o...
Design a Cloud File Storage Service
Design a cloud file storage and collaboration service similar to Google Drive or Dropbox. At a high level, the service must let users store files in a...