David Ruddell

Researcher & Engineer working at the intersections of mathematics × deep learning and AI × cybersecurity.

• 🔬 Relating the abstract to the real — mathematics, deep learning, philosophy
• 🧩 Themes
  • Math: category theory · differential geometry & topology · dynamical systems · numerical methods & PDEs · type theory & Lean
  • Learning: geometric & categorical deep learning · generative models · world models (JEPA) · language & multi-modal models · mechanistic interpretability · cognitive systems
• 🛠️ I build: agentic systems · programming-language prototype · GPU kernels & performance · novel training methods · datasets · evaluations · environments · mathematical visualizations · research prototypes
• 📚 Currently: Staff AI/ML Engineer @ Twenty · AI × Cybersecurity
• 🔗 LinkedIn · Google Scholar · personal site (soon)

🥷 Building in stealth — most current work lives in private repos.