Overview

• OpenAI co-founder Greg Brockman announced via Slack that Ruddarraju, who left xAI on July 8, has officially joined OpenAI this month.
• At xAI, he led infrastructure engineering, helping build Colossus—a supercomputer with over 200,000 GPUs—and overseeing the Grok 3 training run across 100,000 GPUs.
• He is expected to contribute to Stargate, OpenAI’s next-generation infrastructure initiative designed to power advanced AI systems.
• His recruitment underscores intensifying competition for AI compute talent among leading labs, with companies like Meta offering multi-million-dollar deals to lure top engineers.
• Ruddarraju holds a master’s degree in computer science from the University of Minnesota and previously worked in engineering roles at eBay and Robinhood.