Scale By The Bay 2020: Juan Pablo Romero, A tour of String diagrams and Monoidal categories

ai.bythebay.io Nov 2025, Oakland, full-stack AI conference In this talk I will describe what String diagrams are, how do they relate to Monoidal categories, and present a Scala declarative DSL inspired by such concepts. Two interpreters will be presented: a GraphViz based renderer and a ZIO based execution engine. Juan Pablo Romero Apple Software Engineer San Francisco I'm a functional programmer with 10 years of industry experience. Originally from Mexico City, I've been living in San Francisco for the past 6 years. One of my passions is understanding the intersection between Math and Programming. Also high on the list of my interests is finding good ways to visualize complex relationships. When I'm not in front of my computer I can be found taking pictures of the Bay Area and deciding what to read next. Talk to me about Scala, Functional Programming, Type systems, Lean theorem prover, graphical languages, photography, SciFi.