Software Engineer System Design Interview Questions
Practice 1,093 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."
Walk through a recent project design
System Design: End-to-End Project Walkthrough Provide a structured walkthrough of a recent project you led end-to-end. Organize your answer using the ...
Design under vague distributed requirements
System Design Prompt: Distributed Metadata Catalog and Schema Registry Context Design a multi-tenant distributed Metadata Catalog and Schema Registry ...
Design a retail trading platform
Design a Retail Stock Trading Platform (Robinhood-like) Design a mobile-first retail stock trading platform for U.S. equities, similar to Robinhood. T...
Design load balancing, caching, and idempotent APIs
You are designing a backend service that will be deployed across multiple instances behind a load balancer. Answer the following: 1) Load balancing - ...
Design a Top-K search words service
Scenario Design a service that tracks user search queries and returns the Top-K most searched words/queries. Requirements Functional - API to record a...
Design a TikTok-like short video platform
This question evaluates skills in large-scale system design for short-video platforms, including video ingestion and transcoding, storage and CDN stra...
Design a Metrics Storage Platform
This question evaluates system-design and distributed-systems skills for time-series metrics storage, focusing on data modeling for counters, gauges, ...
Design an online auction system
Design an online auction system (eBay-style). Requirements: - Users create auctions with start/end time and starting price. - Users place bids; system...
Implement a robust REST API method
Implement a robust REST API method Design and implement a REST API method to create a resource with idempotency Context You are building a create endp...
Design loan application system
Design an End-to-End Loan Application Platform You are a software engineer at a small lending startup. Design a scalable, compliant loan origination s...
Design a metrics platform without alerting
This question evaluates a candidate's ability to design a scalable time-series metrics platform, covering data modeling for counters/gauges/histograms...
Design an online bookstore for browse and purchase
Design an online bookstore for browse and purchase System Design: Online Bookstore (Browse + Purchase) Context Design an online bookstore that allows ...
Design an Event Booking System
This question evaluates system architecture, distributed systems, data modeling, concurrency control for seat inventory, transactional integrity for b...
Troubleshoot a single-node web outage
This question evaluates operational troubleshooting, root-cause analysis, and resilience design skills for a single-node web server, testing a candida...
Design ad click aggregator and file sync service
This question evaluates system design competencies in building scalable, reliable distributed services—covering high-throughput event ingestion and ag...
Design REST APIs for JSON file storage
This question evaluates system design and RESTful API skills for building JSON document storage, covering metadata modeling, concurrency control, auth...
Model data for an ads platform
This question evaluates a candidate's competency in data modeling and database architecture for large-scale advertising systems, including relational ...
Describe how you use Kubernetes
Describe how you use Kubernetes System Design: Practical Kubernetes (K8s) Use and Operations Context: In a technical screen, you are asked to describe...
Design real-time per-status device counts
This question evaluates a candidate's ability to design scalable, fault-tolerant real-time aggregation systems that produce per-minute status counts, ...
Design Nearby Restaurant Search
This question evaluates competency in large-scale system design for low-latency geospatial search, covering concepts such as geospatial indexing, cand...