
Josef DeanResearcher
Ineffable Intelligence
Member of Technical Staff
via Ineffable Intelligence
Researcher · Executive

Co-founder and CTO at Ineffable Intelligence
Espeholt helped make reinforcement learning practical at enormous scale. He co-created IMPALA, which let thousands of machines train one agent together, and SEED RL, which made that process substantially faster and cheaper.
See something inaccurate or outdated?
Ineffable Intelligence
Microsoft AI
Google DeepMind
Google DeepMindWork and education history is primarily focused on AI-relevant roles and may not be comprehensive.
Last editorial review: August 8, 2026