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."
4.1 Design a Live Streaming Platform
This is a classic system design question that tests your ability to handle real-time data at massive scale. Live streaming sits at the intersection of...
Design a Customer Review Page
This question evaluates skills in system architecture, data modeling, API design, storage and search solutions, media handling, ranking, pagination, c...
Design EV Telemetry Monitoring App
You are interviewing for a full-stack software role on an electric-vehicle team. Design an internal application that displays live vehicle telemetry, ...
Implement a thread-safe producer–consumer buffer
Implement a thread-safe producer–consumer buffer Bounded Blocking Buffer with Shutdown and Timeouts You are asked to design and implement a thread-saf...
Design an alert notification system
Design a multi-tenant alert notification system for operational incidents. Monitoring sources send events when checks fire or recover. Users can confi...
Design an inventory management system
Design an inventory management system for an e-commerce business. The system must support: - Updating stock when inventory is received, adjusted, or s...
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 Dockerized GPU test pipeline
Design a Dockerized GPU test pipeline Design a Docker-Based Environment for Automated Graphics Tests on NVIDIA/AMD GPUs Context You need to design a r...
Design CRUD APIs with async jobs
This question evaluates a candidate's ability to design backend services that combine CRUD operations with asynchronous background job processing, emp...
Design a parking lot system
This question evaluates system design competencies such as scalable distributed architecture, real-time state management, data modeling, API design, c...
Design a content moderation system
This question evaluates a candidate's competency in designing large-scale content moderation systems, covering distributed architecture, scalability a...
Design a game leaderboard service
This question evaluates a candidate's ability to design scalable, low-latency backend systems and distributed data architectures, covering competencie...
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 a cloud console main page
Scenario You are building the main landing page (home page) of a cloud service console that a user sees immediately after logging in (e.g., similar to...
Design a Hosted Notebook Platform
This question evaluates system design skills around stateful compute orchestration, including control-plane versus data-plane separation, workspace li...
How would you scale batch image pipelines?
This question evaluates a candidate's competence in designing scalable, reliable batch image-processing pipelines, testing knowledge of distributed sy...
Design an IAM system for services and users
System Design Prompt Design an Identity and Access Management (IAM) system for an organization/platform. The system must support: - Human users and se...
Design large video upload for a YouTube-like app
System Design Prompt Design the video upload subsystem for a YouTube-like product that supports large video files. Core user flow 1. User selects a la...
Design a local activity counter service
System Design: Near-Real-Time Activity Counting Service Context Build a service that ingests high-throughput client events and provides near-real-time...
Design a frontend shopping cart and feature flags
Scenario You are designing frontend-focused systems for a large e-commerce web app. Part A — Shopping cart (frontend focus) Design the shopping cart e...