Karl Higley

Recommender systems engineer brewing practical magic with algorithms and data. I build end-to-end recommendations from pipelines to production. Equal parts researcher, tinkerer, and digital hedge witch.

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A tableau of three tarot cards: The Magician, The High Priestess, and The Hermit

Marginalia: June Beginnings

Welcome to the first Marginalia collection to A Recommancer's Pocket Grimoire, from Gwendydd Research! We are a small independent research lab and consultancy, and we're publishing

Jun 28, 2026 11 min read