OpenAI Software Engineer System Design Interview Questions
Practice 69 real System Design interview questions for Software Engineer roles at OpenAI.
"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 a Payment Lifecycle from Hold to Charge and Settlement
Design a Payment Lifecycle from Hold to Charge and Settlement Design a payment system whose main lifecycle is hold, charge, then settlement. A hold re...
Design the GPU Job Scheduler for a Text-to-Video Generation Service
This system design question evaluates a candidate's ability to design a resource-scheduling layer for scarce, expensive compute under sustained overlo...
Design a Large-Scale Streaming AI Product Feature
Design a Large-Scale Streaming AI Product Feature Design a product-facing AI feature for many concurrent users with streamed responses. Cover API and ...
Design a High-Throughput Payment Authorization and Settlement System
Design a payment system that handles about 10,000 transaction requests per second. Each transaction first goes to an external payment service for appr...
Design a Highly Available Conversational AI Service
Design a Highly Available Conversational AI Service Design a conversational AI service that accepts a user message and streams a generated response. B...
Design Online Chess Matchmaking and Clocks
Design the backend for online chess games with skill-based matchmaking and authoritative countdown clocks. Players enter a queue for a selected time c...
Design an Online Chess Service from Launch to Scale
Design an Online Chess Service from Launch to Scale Design an online chess service. Players enter matchmaking, are paired into games, exchange legal m...
Design a Payment Orchestration System
Design a Payment Orchestration System Design the merchant-side service that coordinates payment authorization, capture, refund, and status tracking th...
Design an Asynchronous Text-to-Video Generation Service
Design an Asynchronous Text-to-Video Generation Service Design a service in which a user submits a text prompt, the system performs a long-running vid...
Design a Fault-Tolerant Video Generation Platform
Design a Fault-Tolerant Video Generation Platform Prompt Design an asynchronous video-generation platform. A user submits generation parameters, check...
Design a Payment Processing System with Exactly-Once Charging
This question evaluates a candidate's ability to design a payment system that guarantees exactly-once charging under network failures, retries, and du...
Design Video Generation Orchestration
Design a scalable system to orchestrate AI video generation (think Sora-style text-to-video). Users submit text prompts to generate videos. For each s...
Design a sandboxed cloud IDE
System Design: Sandboxed Cloud IDE (Colab-like) Design a multi-tenant, browser-based cloud IDE/notebook that lets users run code inside an isolated sa...
Design a Distributed Rate Limiter
This question evaluates competency in distributed systems architecture, API and data model design, performance engineering, and operational concerns s...
Design GPU Scheduling for a Video Generation Platform
Prepare for a OpenAI system design interview about design gpu scheduling for a video generation platform. This question focuses on requirements, archi...
Design a Tier-Aware AI Video Generation Service
Design a Tier-Aware AI Video Generation Service Prompt Design a service that accepts a generation request, runs an expensive video-generation workflow...
Design an SSH-Based Cloud Development Environment
Design an SSH-Based Cloud Development Environment Design a cloud development environment that is accessed by SSH rather than through a browser. Users ...
Design a Payment Processing System
This system design question evaluates a candidate's ability to architect a backend payment system that stays correct under retries, concurrency, and p...
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 a Cloud DevBox Platform
Design a cloud DevBox platform: a service that gives developers disposable or persistent remote development machines, accessible through a browser, SS...