Meta Software Engineer System Design Interview Questions
Practice 81 real System Design interview questions for Software Engineer roles at Meta.
"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 an online auction system
Design an online auction system System Design: Real-Time Online Auction Platform You are asked to design an online auction system that supports real-t...
Handle invalid input at system level
Design: Validation and Error Handling for a Top-K Frequency API Context You are designing a REST endpoint that computes the top-K most frequent values...
Design an Instagram-like photo-sharing platform
System Design: Instagram-like Photo and Short-Video Platform Goal Design an Instagram-like platform for photos and short videos. The design should cov...
Design a marketplace price tracking service
Design a large-scale product price tracking service similar to an e-commerce price monitor. Users can submit product links from a major online marketp...
Design a mini banking system
Design a mini banking system In-Memory Banking System — Design and Implementation You are to design and implement an in-memory banking system that sup...
Merge customers and preserve history
Question Implement mergeCustomers(String oldId, String newId) for a payments/ledger platform. The call absorbs oldId into the survivor newId while pre...
Design an online chess game with undo and leaderboard
This question evaluates proficiency in real-time system design, state management, and concurrency control for multiplayer games, including consistency...
Design a food ordering and delivery system
This question evaluates a candidate's ability to design scalable, reliable backend systems including API design, data modeling, state management, disp...
Design a ticket or hotel reservation system
Design a reservation system (Ticketmaster-style event seats or hotel rooms). Requirements: - Users search availability by date/event. - Users select s...
Design a real-time game leaderboard
Design a real-time leaderboard for an online game. Requirements: - Players submit score updates frequently. - Query top N players globally and per reg...
Design ad click tracking and dashboard at scale
This question evaluates a candidate's skills in designing large-scale distributed systems including real-time data ingestion and aggregation, storage ...
Design an online coding judge
Question Design an online coding practice and judging platform (think LeetCode / HackerRank / Codeforces) where users submit solutions that are compil...
Implement held transfers with accept/cancel
Implement held transfers with accept/cancel Design and implement a two-phase ("pull-style") money-transfer system in which funds are first held on the...
Design ticketing system with seat hold
Design an online ticketing system (similar to Ticketmaster) that allows users to browse events, select seats, and place a temporary 5-minute hold on s...
Design a flight search platform
This question evaluates understanding of distributed systems, API and data model design, large-scale data ingestion and indexing, search ranking and c...
Design user top-10 songs service
Design user top-10 songs service Design a Service to Compute Each User's Top 10 Songs Context You are designing a backend service for a large-scale mu...
Design coding platform leaderboard system
Design coding platform leaderboard system System Design: Scalable Coding Platform with Live Global Leaderboard Context Design a coding challenge platf...
Design a basic bank system API
In-Memory Bank System: API, Data Model, Invariants, Semantics, and Edge Cases Goal Design and implement an in-memory bank system that supports account...
Design an ad click tracking system
This question evaluates a candidate's ability to architect a high-throughput, reliable ad event tracking system, including event modeling, streaming a...
Design a Coding Contest Platform
Design an online coding contest platform that supports programming competitions, code submission, automated judging, and live leaderboards. The platfo...