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 Global Nearby Restaurant Search
Design a simplified global food-delivery platform similar to a restaurant marketplace. Requirements: - Merchants can register and manage restaurants. ...
Design a Coding Contest Platform
Design an online coding contest platform that supports programming competitions, code submission, automated judging, and live leaderboards. The platfo...
Design consistent hashing with a sorted map
Consistent Hashing with a Sorted Map (Virtual Nodes) Context You are building a client-side library to map arbitrary keys to backend nodes (cache/stor...
Design a global restaurant menu update system
Design a menu update system for a global chain of restaurants. Context: - The chain operates in many countries. - Each restaurant may have multiple ki...
Design a scalable food news feed
Question Design a news-feed feature for a food discovery app (DoorDash-style). The feed lists items showing title, author, short summary, and engageme...
Design a multi-tenant Slack-like messenger
System Design: Multi‑Tenant B2B Team Messaging (Slack‑like) Design a multi‑tenant, enterprise‑grade team messaging platform similar to Slack. Function...
Explain database design and consistency
System Design (Technical Screen): Database Portion of a Project Provide a structured description of the database component of a real project you owned...
Design viewing history and resume service
Design: Watched-Video and Resume Playback Service Context Design a backend service that records each user’s watched video list and lets them resume an...
Schedule instructions on a VLIW pipeline
VLIW Instruction Scheduling and Software Pipelining You are given a 4-issue VLIW machine with these functional units and latencies: - 2 ALUs (ALU late...
Design a Scheduler and Metrics Platform
Design a cloud-native job scheduling and metrics monitoring platform for a Kubernetes-like environment. The platform should allow internal users to su...
Design a replicated key-value store with quorums
Design a distributed system that replicates key–value pairs across multiple replicas. The interviewer wants to focus on replication, quorums, and fail...
Design a donations service with 3-day rolling totals
Design a service that ingests donations and serves rolling 3-day donation totals. Requirements Core features 1. Ingest donation events: - Each dona...
Design an image crawler for unlimited URLs
Design a service that crawls images starting from a set of root URLs. Requirements: - Input: one or more root URLs. - Crawl pages, discover links, and...
Design a thread-safe high-QPS rate limiter
Question You are building a backend service that must enforce API rate limits. Design and (at a high level) implement a rate limiter, then work throug...
Design a swipeable video feed backend
Design the backend service for a short-video product similar to a “Spotlight”-style feed. Scope: only the backend “feed vending” functionality that po...
Design a rate limiter
Design a rate limiting system for an API gateway. Your design should address: - Rate limits such as "N requests per second/minute" per key (e.g., per ...
Design a bank system with scheduling and rankings
Design an In‑Memory Bank System (Technical Screen) You are designing an in‑memory bank ledger that supports real‑time withdrawals and scheduled paymen...
Design scalable rate limiter with token bucket
You are asked to design and implement a rate limiter for an HTTP API. Requirements - Limit each client (e.g., user ID or API key) to at most N request...
Troubleshoot a single-node web outage
You own a single-machine web server (one host running the web service). Suddenly users report that a specific page (or the whole website) is down. 1. ...
Design a container image registry
Design a cloud service for storing and distributing container images, similar to a hosted container registry. The system should support: - Pushing con...