A pure passion for markets and machines, statistics and software. Never satisfied with anything short of building what needs to be built. Who am I?

Author of core open source statistical software tools and fostered one of the largest ecosystems in quantitative finance. Millions of downloads and users since 2006 - now an industry standard.
Software has inspired design patterns widely used throughout other languages and commercial products
Ran private consultancy to hedge funds, proprietary trading firms, and high net worth individuals for 5 years
Designed and implemented alpha models as well as risk, data and performance tools to help build one of the largest and most successful quantitative hedge funds on earth.
Created and co-founder of R/Finance conference, successfully run since 2009
Code used in 100s of published books and courses in dozens of languages
Created online course on time series data with 30k+ users
40+ invited and contributed talks around the world since 2006