Johnny Greco is a Principal Research Scientist with a decade of experience applying advanced ML and data science to production problems across startups and research institutions. He transitioned from a PhD in Astrophysics at Princeton into industry roles where he led R&D and applied science teams at companies like Gretel.ai, CalypsoAI, and Radiology Partners before joining NVIDIA. Johnny combines deep academic rigor with hands-on engineering—building privacy-preserving synthetic-data solutions, ML-driven healthcare analytics, and agent-based systems—while mentoring teams and shaping research-to-product roadmaps. Based in Columbus, Ohio, he’s equally comfortable prototyping novel algorithms and driving production-ready deployments, and brings an unusual blend of cosmology-trained quantitative thinking to practical AI engineering.
10 years of coding experience
15 years of employment as a software developer
Bachelor of Science - BS Physics and Astronomy & Astrophysics, Bachelor of Science - BS Physics and Astronomy & Astrophysics at The Ohio State University
Doctor of Philosophy - PhD Astrophysics, Doctor of Philosophy - PhD Astrophysics at Princeton University
Contributions:38 commits, 5 PRs, 32 pushes in 4 years
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Johnny Greco - Principal Research Scientist at NVIDIA