Google AI Pioneer Jeff Dean Departs After 27 Years, Launches New Venture

Jeff Dean, who joined Google as employee number 30 in 1999, marked his departure with a photo of the scuffed Chromebook and badge he handed back on his last day. The post quickly amassed millions of views, reflecting industry interest in his exit amid a sweeping AI leadership reshuffle that moved Demis Hassabis to a chair role and promoted Koray Kavukcuoglu. Dean is leaving together with Sanjay Ghemawat, Oriol Vinyals and Quoc Le to launch Discovery Loop, a public-benefit corporation funded by Alphabet, Radical Ventures and Khosla Ventures.

In an internal farewell note, Dean listed achievements such as scaling Search, creating BigTable, co-authoring TensorFlow and founding Google Brain. He also mentioned personal anecdotes like biking to off-sites and visiting 29 Google offices across five continents. Sundar Pichai called it a privilege to have worked alongside Dean and Ghemawat, and Alphabet will provide compute for Discovery Loop’s first year. Employees reacted with memes, summarizing the sentiment that Google is “open-sourcing” Dean.