David Betancourt, Ph.D.

Founding CTO at Stealth AI Startup

New York, New York, United States

About David Betancourt, Ph.D.

David Betancourt, Ph.D. is Founding CTO at Stealth AI Startup. Location: New York, New York, United States.

Technical founder and Head of AI. PhD in Machine Learning from Georgia Tech. Shipping research-to-production AI/ML systems at massive scale for over a decade. Building agentic AI infrastructure for high-stakes decision systems, including policy-gated execution, evaluation, observability, auditability, human oversight, and research-to-production deployment. Current work focuses on making autonomous AI systems reliable enough for complex, mission-critical environments. Expertise in AI for high-stakes decision systems—from institutional finance to massive-scale consumer ecosystems. Specialize in prediction under uncertainty, risk-aware optimization, AI personalization, and agentic AI systems for complex environments, including LLM pre/post-training and reinforcement learning. Previously AI Scientist at Apple, led privacy-preserving on-device AI for ads and personalization. Pioneered private federated learning, on-device ML, and novel A/B on-device experimentation. Orchestrated cross-functional research, engineering, and product organizations—shipping device intelligence to millions of iOS consumers worldwide.

Skills

  • Bayesian statistics
  • AI for Time Series Forecasting
  • Engineering Leadership

Additional experience

  • Founder & CEO

    Reinforce Market Labs

    December 2024 – August 2026

Education

  • Doctor of Philosophy (Ph.D.), College of Computing at Georgia Tech
  • Master's degree, College of Computing at Georgia Tech