Dominik Kundel

Developer Experience Lead · OpenAI

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Bio

Dominik Kundel works on Developer Experience at OpenAI, where he helps builders get the most out of Codex and the OpenAI APIs. His work has spanned the Agents SDK, GPT-OSS, and most recently Codex. Before OpenAI, he led Product & Design for Twilio’s Emerging Tech & Innovation team, working on developer tools and customer-aware AI agents. Dominik has spent more than a decade in developer tools, usually across APIs, CLIs, JavaScript, and strange demos. Outside work, he’s probably tinkering with cocktails, food, photography, or something that should not need JavaScript but somehow does.

Sessions (2)

Day 41:30pm-1:50pmTrack 8 · Room 2020

Codex, Behind the Harness

Day 33:45pm-4:05pmExpo Stage 2 NW

Building on the Codex Harness

Additional Speaker Details

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Dominik Kundel works on Developer Experience at OpenAI, where his work spans Codex, voice agents, and OpenAI's developer SDKs — giving him firsthand production insight into how AI is reshaping the development workflow from inside a frontier-model provider. His talks blend concrete demos (chained vs. speech-to-speech voice pipelines, running Codex across DevDay 2025 infrastructure) with practical, hard-won lessons about building and evaluating agents at scale.