Head of Research at Quanthome. Research Fellow at HEC Lausanne's CRML. PhD in economics. I work at the intersection of agentic AI systems, real estate analytics, and sustainable finance. On one side, I architect long-duration AI harnesses and open-source tools that enable autonomous coding and research workflows. On the other, I develop ESG scores, pricing models, and sustainability metrics for the Swiss real estate market, and translate this research for industry, media, and academic audiences. My path went from carpentry to political science to a PhD in economics focused on climate, development, and environmental policy. That trajectory shaped how I approach problems: start with the material, understand the system, model it, then build the tools that operationalize the model. I write and speak across four domains: - Agentic AI & software architecture: harness design, memory systems, context engineering, open-source development - Real estate, finance & ESG: sustainability scoring, asset pricing, risk analytics, sustainable investment - Environmental & climate economics: development economics, climate shocks, resource economics - FinTech & applied AI: building AI systems for low-tech industries and non-AI-native teams My work appears in academic journals, white papers, French and Swiss media (Le Temps, BCV, Allnews, Immoday), and on my website (nathan-delacretaz.com), where I publish blogs, conference talks, and sources that shaped my thinking.