Martin Spier leads ChatGPT Performance at OpenAI, where he works on making ChatGPT faster, more reliable, and easier for engineering teams to operate at scale. His work spans AI and cloud infrastructure, performance engineering, observability, reliability, platform engineering, and developer productivity.

Before OpenAI, Martin was VP of Engineering at Parasail, working on AI inference infrastructure, and previously led large-scale performance engineering work at Netflix. He has also created and contributed to open-source performance tools including FlameScope, Vector, multiple performance visualizations, and real user monitoring systems for understanding and optimizing production systems at scale.