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OpenAI Software Engineer interview: machine counting and rate-limit design

OpenAISoftware Engineer · Jul 2026

I started with a phone screen about my background and a basic data structures problem. From there, the interviews ramped up quickly. The process felt intense and focused on whether I could handle real engineering problem solving under pressure. The technical rounds included a complex challenge around counting machines and a system design question about rate limiting. I had already practiced rate-…

Shared by a candidate · reported Jul 2026. Interview formats change; use it as a guide, not a script.