Josef Dean announced on LinkedIn that he has joined Ineffable Intelligence as a member of technical staff after nearly two years at Google DeepMind. His profile dates the move to July 2026.

At Google DeepMind, Dean was a core contributor to Decoupled DiLoCo, an infrastructure design that keeps large model-training jobs running when individual accelerators or network links fail. He said his first weeks at Ineffable have involved testing NVIDIA's Vera Rubin platform.