OpenAI
Leading AI research laboratory developing state-of-the-art foundation models like GPT-4.
5 Rounds
~21 Days
Very Hard
The Interview Loop
Recruiter Screen (30 min)
Standard fit check, behavioral questions, and resume overview.
Technical Loop (3-4 Rounds)
Deep dive into domain knowledge, coding, and system design.
Interview Question Bank
Backend Engineer
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Technical
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medium
Explain how Server-Sent Events (SSE) work under the hood. What are the load balancing challenges associated with SSE?
#HTTP
#Load Balancing
#TCP/IP
Cloud Engineer
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Technical
•
hard
How does packet flow work between two pods on different nodes in a Kubernetes cluster? Walk me through the exact networking path.
#Kubernetes
#CNI
#Linux Networking
#iptables/eBPF
Cloud Engineer
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Technical
•
hard
What is RDMA (Remote Direct Memory Access) and why is it critical for distributed GPU training clusters?
#RDMA
#InfiniBand
#GPUs
#Performance
Cloud Engineer
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Technical
•
medium
How do you troubleshoot a scenario where pods in a Kubernetes cluster can communicate with each other perfectly, but intermittently drop connections when reaching out to an external Azure managed database?
#Kubernetes
#SNAT
#DNS
#Troubleshooting
Data Engineer
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Coding
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medium
Write an asynchronous Python script using asyncio and aiohttp to download millions of images from a list of URLs, ensuring a maximum of 100 concurrent requests and implementing exponential backoff for 429 errors.
#Asyncio
#Concurrency
#Error Handling
DevOps Engineer
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Technical
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hard
What is InfiniBand, and how does RDMA differ from traditional TCP/IP networking in the context of distributed model training?
#InfiniBand
#RDMA
#TCP/IP
#High Performance Computing
DevOps Engineer
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Technical
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hard
What is eBPF, and how can it be used for network observability and security in a high-throughput microservices architecture?
#eBPF
#Linux Kernel
#Observability
#Cilium
DevOps Engineer
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Technical
•
medium
Explain the role of a Service Mesh (like Istio or Linkerd). What specific problems does it solve, and what overhead does it introduce?
#Service Mesh
#Microservices
#mTLS
#Traffic Management
Difficulty Radar
Based on recent AI-sourced data.
Meet Your Interviewers
The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
SimulateUnwritten Rules
Think Out Loud
Always explain your thought process before writing code or drawing architecture.